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00:00:00Michele De Carli: Okay, so…
00:09:620Michele De Carli: Mark.
00:17:810Michele De Carli: Alright, so we were here.
00:23:580Michele De Carli: We were here yesterday, so we, have started, looking at the, simplified, calculation that we loaded.
00:34:850Michele De Carli: Pretty low computing show, sorry.
00:38:340Michele De Carli: And, we are…
00:47:550Michele De Carli: Okay. And… And, we had seen how to consider the, load that, the… the 8 flags…
01:03:930Michele De Carli: entering the room from the upper partis, okay? So, considering the solicitation, which is the soil temperature.
01:11:860Michele De Carli: plus the, let's say, thermalan nature of the building envelope, okay?
01:26:50Michele De Carli: He's really… And try to make it…
01:31:230Michele De Carli: Okay, so, and, as, as ad tech, we have the, temporal, ethereal and temporary defense, which is, okay, leading, to the, let's say, name of the, of the methodology, which is called
01:49:960Michele De Carli: also carrying, okay?
01:52:490Michele De Carli: Again, I want to underline that, as you will see, as we've experienced making your calculations, the effect of the OPA quotes, okay, is due, or is related also to the U-value. So, if we have, you know.
02:09:720Michele De Carli: good insulation, okay, the solar, the load that is coming, that is held in the room to the op-ed world will become much.
02:20:780Michele De Carli: Okay? So this is, this is, as it happens. One, and one additional comment is that the, the termination is, simplified by considering the aerial mass of the wall, okay?
02:39:50Michele De Carli: So, in principle here, we should add also the specific it, of the, of the, of the material, but in this case, the approximation is to avoid that. So, that is…
02:54:240Michele De Carli: So, based on the mass of the wall, and depending on the orientation of the wall, then we have a different pattern of delta T equivalent. As we have seen yesterday.
03:08:750Michele De Carli: We have also the Excel file, which takes that in. So we have seen that by increasing the mass of the wall, okay, the shape of the delta T equivalent is, let's say, smoother and delayed, and the peak is delayed entirely.
03:27:440Michele De Carli: No.
03:28:620Michele De Carli: What happens when we consider the solar radiation coming through the windows through the grazing? In this case, okay, we have, of course, to consider, again, the orientation, because the, solar radiation, which is,
03:47:440Michele De Carli: Which, is, related to a circle. We know the location of this.
03:53:470Michele De Carli: Okay?
03:56:210Michele De Carli: So, we are in clear strike conditions, okay? And, this is, okay, the, the, in the left-hand side, chart is, again, the, the, the simplified, okay.
04:11:740Michele De Carli: pattern of the solar radiation that we might have in the different orientations, where we have to sum the diffuse contribution of the solar radiation and the normal contribution of the solution. So, not normal.
04:25:950Michele De Carli: Nice, Justin.
04:28:90Michele De Carli: So, the overall radiation is the blue line past the yellow forest, the green for south, and the red for west.
04:39:390Michele De Carli: Now, this is, okay, what happens outside. So, this is the solar radiation that we have, okay, for a vertical surface on the outer environment, okay? So…
04:51:660Michele De Carli: Now we have to consider that we… the surrogation should pass through a window, okay? And then we need to consider that when it's passing through the window, okay.
05:10:880Michele De Carli: This surroundation becomes a N, a solid N, which is the suction.
05:19:110Michele De Carli: And then we need to consider how the room, okay, will, behave, so, the effect of the response of the room, okay?
05:31:890Michele De Carli: Which, at the end, is, related to the thermal inertia of the whole room. So, considering all the, let's say, different, in terms…
05:56:540Michele De Carli: Yes, very technical services, okay?
06:00:740Michele De Carli: So, We have a problem.
06:04:890Michele De Carli: So we have two… so we will divide or subdivide the programs into two, okay, main issues.
06:11:560Michele De Carli: What is… what is the effect of the glazing element? Okay, so… because the glazing element will filter somehow in the solar eviction, so…
06:25:240Michele De Carli: One… one point is how the… what is the effect of the glass, okay, related to the… in… to the incidence of radiation, okay? So, it means how much power, hour by hour passes through the consumer window.
06:44:990Michele De Carli: Okay, and this is one point. The other point is that once it passes through, there we go, what is the effect consuming the role of permanent?
06:56:340Michele De Carli: Okay, so let's start with the first part. So, what is the effect of the glass on the anti-sovereign election? Okay?
07:05:290Michele De Carli: So, what we can do, basically, is consider the, let's say, the, the solar gain to
07:18:140Michele De Carli: the glass. So, the effect of the glass will be to, will be to, let's say, filter, okay, to reduce the incoming solar radiation.
07:29:610Michele De Carli: How much? Well, it depends on the optical properties, and also on the thermal properties, okay, of the, graphs, okay, or the… of the wind domains, in general.
07:43:340Michele De Carli: And so, depending on the type of glass, the…
07:48:900Michele De Carli: solar radiation, which is the yellow line here for the eastern, okay? Instant solar radiation on the outer surface, of the grass. The green is for the south, and the red is for the western, okay?
08:08:410Michele De Carli: they will be reduced because there will be a kind of filtering of the glass, okay? So, the doctor representation that we have on the left-hand side, the charts, okay, represents the
08:22:700Michele De Carli: effect on the glass, okay? So, the solar radiation passing through the glass will be reduced, because we have reflections, we have, part of the absorbed solidation will be rejected to the outer environment, okay? Part of the absorbed solidation will enter, okay, as…
08:43:360Michele De Carli: So let's say that what enters the room is the transmitted solar radiation plus the absorbed solar radiation marinas. It's half of, let's say, half the normal mass of this absorbed solar radiation. Half will go outside and half will go inside.
08:59:400Michele De Carli: more organized.
09:01:20Michele De Carli: Okay.
09:02:300Michele De Carli: So, the effect of the US is to, let's say, reduce the incoming solar emission. So, at the end, the effort, the heat gain, the solar heat gain that we had in the room.
09:16:770Michele De Carli: is the Dr. Lang represented on the right and left-hand side, where we have
09:23:360Michele De Carli: A peak, a maximum peak in the morning for east, a maximum peak in… at noontime for south, but reduced in terms of, let's say.
09:35:520Michele De Carli: entity, and a peak in West, okay, in the afternoon.
09:43:100Michele De Carli: With more or less the same value that we have on east, because we are considering clear solar conditions, so we have, let's say, almost, okay, we can consider almost symmetric conditions for the solar radiation from east to west.
09:57:500Michele De Carli: Let's say from northeast to northwest, when the sun rises and sets.
10:04:60Michele De Carli: Now, of course, death.
10:06:730Michele De Carli: effort of the room, okay, of the… terminal inertia on the road.
10:13:180Michele De Carli: is, again, okay, something similar to what we have seen yesterday in the first slide of this part, okay, of the PowerPoint, which was basically the absorption of the
10:26:240Michele De Carli: of the… of part of the power that is incoming the rule, okay, by the…
10:32:670Michele De Carli: By the, by the, by the starters, okay, you know, by the starters of the rule.
10:40:450Michele De Carli: And, and, and part of this, part of this, heat gain is then, stored in the, in the structures, and part is to be removed by the air pollution system, okay?
10:56:280Michele De Carli: So, the effect is then, let's say, is the response of the room, okay, so, which means the cooling demand that is required by the room.
11:10:670Michele De Carli: Okay, is then something similar, okay, in shape, okay, so the qualitative shape, if this is the
11:20:940Michele De Carli: This is the… the… the input, okay? This is the input, the dot line here. The dot line will represent the response of the room, which will depend, of course, on the terminal inertia of the room. The greater the terminal inertia of the room, the greater the… okay, again, the…
11:40:780Michele De Carli: The smaller we be, the peak loader.
11:44:350Michele De Carli: the later will be the peak load, and smoother will be the line, okay? As we have seen in the equivalent, okay, as we have seen here, okay, so the active component of the capacity of the room, okay, similar of the act.
12:03:800Michele De Carli: Similar to that effect of the external world, so that we can consider to have this kind of pattern of the kuni Lord, of the power that we need to subtract the rule hour by hour, depending on the parameters.
12:21:550Michele De Carli: So, we have this kind of shape with a maximum that is, let's say, shifted.
12:28:550Michele De Carli: Couple of hours later, so the maximum means at 9 AM, the maximum could be at around 11, 12 for, for, for east orientation. The maximum
12:41:810Michele De Carli: of the bigger surroundation outside, or entering through the window is at the new thigh, okay?
12:51:530Michele De Carli: And the maximum is, again, shifted a couple of hours later, so in the afternoon. Okay, and the maximum for West is, let's say, in, let's say, during summer, so let's say, beyond.
13:09:390Michele De Carli: Right?
13:10:680Michele De Carli: So this is, okay, the… the concept. So this is, let's say, the overall principle, okay, that is behind this calculation method. So basically.
13:23:70Michele De Carli: We can provide, okay, some, let's say, some, values, hour by hour, again, okay, on the aspect of the response of the room.
13:36:30Michele De Carli: related to a certain solicitation coming as solidation through a certain window. So, we need to consider which kind of window we have in order to see how much the solidarity is filtered.
13:49:920Michele De Carli: And then once it enters the room, okay, as a function of the orientation, we have different lines, different curves, different values of the, of the parameters, of the incoming serial diction.
14:03:850Michele De Carli: Depending on the orientation, of course, because the patterns look for rotation, but also on the thermal inertia of the homepage.
14:14:400Michele De Carli: Okay? The whole structure of me.
14:17:160Michele De Carli: Okay?
14:18:330Michele De Carli: clear?
14:19:470Michele De Carli: Question?
14:20:990Michele De Carli: Okay?
14:22:110Michele De Carli: So, now!
14:23:720Michele De Carli: What!
14:25:440Michele De Carli: Going in detail, okay, how can we consider the, effect on the solar radiation lab?
14:38:580Michele De Carli: Okay, so, we… could define, okay, we could define the,
14:48:740Michele De Carli: we could… I mean, in the 60s, okay, there was a national project, okay, and…
14:55:280Michele De Carli: Where they measure the solar gain, okay, of, let's say, the basic glass that we could have. The basic glass is the
15:07:350Michele De Carli: female glass that we could have, so 3 millimeters glass.
15:12:530Michele De Carli: pure glass, okay, clear glass, okay? So, this is the minimum, let's say.
15:18:770Michele De Carli: the minimum requirement for glass, okay? You cannot go below 3 millimeters, and more than clear glass, there is nothing more transparent than the clear glass, okay? So this is, let's say.
15:30:190Michele De Carli: the basic, okay, gas that you could have, okay? Or, let's say, in terms of energy, the worst gas that you can get, okay?
15:38:970Michele De Carli: So, from this glass, you could only, okay, improve the, let's say, on one side, the optical properties, on the other side, the thermal properties.
15:50:360Michele De Carli: So, if we are able to, to estimate the solar gain from this reference glass, so from this 3mm square glass, okay, from the glass.
16:06:730Michele De Carli: Then, this is the basic… Solar gain that could be filtered by the porous.
16:16:490Michele De Carli: That window, that can help.
16:18:610Michele De Carli: And that can be considered the filtering function, the best filtering function that we might have.
16:28:230Michele De Carli: So if we know hour by hour, depending on the orientation of the glass, okay, so depending if we are south, west, east, okay, or north.
16:40:550Michele De Carli: We are able to, by these measurements, we are able to define the incoming solar radiation in the different… well, we could do that for
16:51:180Michele De Carli: all year round, but here we are just interested in the clear sky condition, okay? But this was done also for other periods of the… of the year, okay?
17:01:920Michele De Carli: And it is basically used in all the calculation methods, also dynamic calculation methods. In any case. Here, we're just interested in
17:10:720Michele De Carli: clear sky conditions in July, okay? So this is the… the… so one day, okay? So we are not interested in, more than this solidification.
17:20:730Michele De Carli: No.
17:24:250Michele De Carli: If we have a different dress, like, if we are here, here in this case, we have the double dress, I think it is also, you know, new, okay, it doesn't matter. So we have… this window will be represented by
17:39:500Michele De Carli: a U-value, okay, so a U-value which is not the clear glass condition, and also, the optical properties, okay, we're limited to, greater filtering, okay, so the…
17:53:80Michele De Carli: The power that will be transmitted hour by hour by these two assets will be much less or less than the reference points.
18:02:400Michele De Carli: So, basically, what we consider is the so-called shading coefficient. The shading coefficient is the ratio between the
18:11:750Michele De Carli: the… the… une,
18:21:40Michele De Carli: Perfect, all the actual glass that you are considering, so the glass of your house, okay?
18:27:590Michele De Carli: With respect to the defensiveness, okay? So basically, we can define a relative value, okay.
18:36:970Michele De Carli: On the percentage of how much power, how much energy.
18:43:310Michele De Carli: I'm much farther east. That's the…
18:47:200Michele De Carli: true definitive less data as compared to the references, okay?
18:52:940Michele De Carli: And of course, if we have… if we have a single pane window, so a single glass window with the float glass, so clear glass, the chain coefficient will be 1, because we have exactly the reference window, okay?
19:07:520Michele De Carli: In case we have different windows, we have different values. I didn't open the shading position table. Okay, anyway, you have that, you shouldn't… okay, maybe we can talk a little bit later on.
19:21:740Michele De Carli: In Muden, you have a list of shading coefficient to be used, okay? In case you're doubled, you can direct me, okay? I'm open to…
19:33:510Michele De Carli: Mutual test.
19:34:560Michele De Carli: I want to imagine that, in principle, not just about.
19:40:730Michele De Carli: I wasn't gonna lie, Bester, they…
19:44:140Michele De Carli: It's not only a question of the window, but it's also a question of the shaving system, the kidneys, in case of the kinom.
19:51:120Michele De Carli: the shading element that you are considering, so if you have an issue blind, if you have a tend, or whatever.
20:01:260Michele De Carli: Being internal or external, you would have more or less energy passing through this window, so there should be coefficient to be higher for…
20:10:290Michele De Carli: Of course, the lower the shading coefficient, the mean… the lower the entering solar addition, okay? So, the lower the solid fee.
20:20:400Michele De Carli: He's more literacy Okay?
20:27:540Michele De Carli: We are not finished, but it's okay so far, okay?
20:30:370Michele De Carli: Okay, so… Now, what you could do, you could say, I can.
20:37:690Michele De Carli: The land today.
20:39:910Michele De Carli: Solar radiation, okay, so the Schengen coefficient is just one value, and it's a value that is multiplying the
20:49:80Michele De Carli: Incanceleration to the reference class, okay, powered by an hour, in the 22 hours, okay?
20:56:670Michele De Carli: But what we could do, we could consider
21:01:160Michele De Carli: the relative and delusional radiation with respect to the outer peak. Okay, so… We consider.
21:13:520Michele De Carli: when we, when I, when I say that we are considering hour by hour, the incoming solar radiation to direct us massage, okay, so…
21:22:410Michele De Carli: Going back to the explosion, right?
21:24:970Michele De Carli: So, we can define the incoming solar allocation with the design A, K, hour by hour, Welcome.
21:37:850Michele De Carli: As a big… As the traction between the
21:44:370Michele De Carli: Hourly income in some radiation with respect to this limitation to the maximum peak that you have outside, okay?
21:52:740Michele De Carli: Because we are considering clear sky condition, we know which is the peak power, okay, specific power, and we know it, and we can calculate it, okay, there are
22:09:150Michele De Carli: equations to calculate that, for the different orientations, of course, depending on the latitude, okay, sorry, depending on the latitude, depending on the orientation, okay, we can define the maximum incident power of solar radiation that we have.
22:26:900Michele De Carli: In East, South, West, Northeast, northwest, north of implementation.
22:32:220Michele De Carli: And we can define The fraction of the income is an allegation for each considered allocation, hour by hour.
22:42:570Michele De Carli: Of this income consolidation with respect to the outer Solar retention.
22:49:00Michele De Carli: Okay?
22:50:150Michele De Carli: So that we can consider a reference value, which is I mean, known, at least…
22:58:240Michele De Carli: Fixed, okay, once we have the latitude.
23:01:980Michele De Carli: Okay?
23:03:140Michele De Carli: So, it doesn't matter if we have
23:06:10Michele De Carli: more cloudy or sunny days, okay? We are talking about designing. It's just question of latitude, okay?
23:15:370Michele De Carli: And, we consider this as a reference number, because this is fixed, and compared this, we are considering through the reference class, which is the incoming salary gain for, I mean, power by power, okay?
23:31:930Michele De Carli: So, we are considering, somehow, some, let's say, dimension as factors, because we have the ratio of the incoming solar radiation in water permitted, divided by the maximum influx, which is
23:46:10Michele De Carli: What's perspective on the outer surface, okay?
23:52:780Michele De Carli: This is the solicitation, okay? So, the solicitation is this 24 values, okay? It's at Z, of course, during that time, okay? Times this, dimensional factor here, okay, which depends on the, on the orientation.
24:13:20Michele De Carli: times the maximum summarization for this orientation, okay? And of course, then we reveal these values by the shading coefficient to consider the actual… the actual values of our window.
24:33:00Michele De Carli: And this is… the solicitation Now.
24:39:440Michele De Carli: He will move if you're unable to move.
24:42:290Michele De Carli: Huh? Then you have to consider ethics, okay? So the ethic is the
24:51:950Michele De Carli: power, okay, that we are, that the…
24:56:490Michele De Carli: The, air conditioning system could, could,
25:07:30Michele De Carli: Exactly. From, the incoming, or for the incoming solar radiation.
25:15:00Michele De Carli: And, of course, the energy that the air conditioning system should absorb.
25:24:200Michele De Carli: is, peaks, okay, so the yellow area is the same. Okay, so we are considering to keep 26 degrees all over the day, so the energy that is entering will have to be removed, the whole
25:39:110Michele De Carli: Day long, okay?
25:41:300Michele De Carli: And, it will be removed, of course, as a function of the thermal energy of the room.
25:51:540Michele De Carli: So…
25:52:480Michele De Carli: Carrier made the calculation for estimating the effect, so the effect of the kernel initial of the room, so the pattern of the solar vision of the room, in terms of watts, okay, to be extracted. Of course, or
26:12:660Michele De Carli: what's the square meter entering from one square meter of wind, okay? So, in this case, okay, the…
26:25:790Michele De Carli: What we can define? We can define the power, a specific power, which can be
26:33:430Michele De Carli: Sorry, the power that can be extracted by the cooling.
26:40:360Michele De Carli: machine, okay, by the air conditioning system. Okay, powered by hour.
26:47:900Michele De Carli: Considering, as reference, the outer maximum Solar radiation, because
26:55:90Michele De Carli: We are dosing, okay, the incoming solar radiation from this riddle phase
27:02:280Michele De Carli: on this rotation. If we have another unit, based on another rotation, then we will consider also this contribution, but we can
27:10:500Michele De Carli: keep separated the photogram, okay? It's a kind of superposing, okay? So, we consider You know me?
27:20:380Michele De Carli: Surface. By surface, okay, the different orientations of the glasses, of the windows, and we consider for this orientation, the effort that the sun radiation coming from this window has on the ring, okay, in terms of cleaning
27:37:560Michele De Carli: Right?
27:38:700Michele De Carli: Once we know how much power we can extract from this rule, we can define this… this power, okay?
27:48:810Michele De Carli: we can define this power with respect to the maximum solicitation, okay? So, in that case, if we are able to provide this support affiliation filters, okay, then
28:03:610Michele De Carli: Okay? These are the measurement factors times the… the maximum solicitation that we have.
28:12:450Michele De Carli: Times the surface, the area of this Gossip?
28:17:190Michele De Carli: That is a shirt is good, you should be.
28:19:350Michele De Carli: Will provide us the Cooling node for this… Ningo, located in this syringe.
28:29:590Michele De Carli: Okay? So… So, again, Lisa, okay?
28:40:220Michele De Carli: Our power is the cooling load that we need to subtract to the E, okay?
28:47:250Michele De Carli: when we, when we consider this. So, what we have listed is the automation factor. The automation factor is a dimensionless value.
29:01:870Michele De Carli: Which is used, then, By multiplying the maximum ink solar radiation on the outer surface.
29:12:570Michele De Carli: Okay, times the surface of the glass for disorientation, times the perceiving coefficient of the current
29:20:510Michele De Carli: So in that way, you are, you are, let's say, providing, okay, the effect of the room.
29:28:910Michele De Carli: restrict to any location, so the incoming solar radiation will be just affected by the maximum solar incident solar radiation, which is
29:40:460Michele De Carli: a function of latitude, okay? So in that way, you are, let's say, providing the restfuls of the room, okay, whichever location you consider on the Earth, okay?
29:54:140Michele De Carli: But considering this orientation, okay? So this is the easiest way you can estimate the cooling load, because these affirmation factors, they are independent, just in time, on the orientation and on the thermal mass, on the thermal dimensions of it.
30:15:680Michele De Carli: Okay?
30:18:70Michele De Carli: Alright? So, they… Saw that!
30:22:550Michele De Carli: The cooling load, due to solar radiation entered into the window.
30:27:170Michele De Carli: It's a function of the surface of the window, Death.
30:33:190Michele De Carli: The, the… Occidental properties of the window, so let's say, the type of window and
30:42:430Michele De Carli: shady season, like, yeah?
30:46:830Michele De Carli: the local latitude.
30:50:280Michele De Carli: Okay, and then here, of course, for this considered variation, the effect of the time range, okay? So in that way, hour by hour, you have different attenuation factors, okay, but you have the same reference condition for this
31:09:240Michele De Carli: server navigation, okay, for this… for this home inpatient.
31:13:560Michele De Carli: Hey, that's it.
31:17:410Michele De Carli: Okay?
31:18:630Michele De Carli: Is it clear?
31:20:260Michele De Carli: Of course, if we have rules with more than one surface, okay, in a surface, we will consider this
31:28:550Michele De Carli: for each orientation, okay, and we could have this yellow, pattern here, plus, I don't know, the red one. Okay, so we will have different contributions
31:41:80Michele De Carli: coming in noon, okay, because we have different orientations, so the peak in south will be related to, let's say, a certain hour, okay?
31:51:260Michele De Carli: Rather than not the… So this is the way you can calculate the… the… the… the chronology to…
32:02:620Michele De Carli: of solar… due to solar radiation, okay? And…
32:09:690Michele De Carli: What is the effect of the thermal capacity of the home? The thermal capacity of the home, okay, depending on the, let's say,
32:17:670Michele De Carli: Terminal inertia, okay, the greater the terminal inertia, again, okay, the smoother the shape of these functions, okay, the submission factors.
32:27:390Michele De Carli: And also, the, the, the lower you did, the peaker, and also, okay, delayed in time, okay? This is the typical pattern of the response, okay, of, of the, due to the inertia of this.
32:44:120Michele De Carli: Now, how can you calculate the, thermal energy? So in this case, we are, okay, working in, with the simplified approach. Okay, so in that case, we are considering not really the
33:01:740Michele De Carli: the heat capacity of the wall of the building, but we will… we are looking at the heaviness of the structures, okay? So, let's say how heavy the room is.
33:16:260Michele De Carli: And how can we consider the different… the contribution of the different walls into the thermal inertia of the whole room? Well, in this case, we consider
33:29:250Michele De Carli: per day.
33:37:520Michele De Carli: I… I adjusted…
33:39:370Michele De Carli: simplifying, okay? Make 4th, gates forward, okay? So I can work and show you a section of the room, okay?
33:58:290Michele De Carli: the mass of the window is zero. As I told you, in all calculation methods, even the more detailed ones, the thermal inertia of the windows is negligible, okay?
34:10:570Michele De Carli: For… that's foresee the unique stage we had.
34:16:489Michele De Carli: one powder.
34:19:469Michele De Carli: More, okay?
34:22:420Michele De Carli: Just run out of the wall.
34:24:400Michele De Carli: So, this one.
34:26:270Michele De Carli: has to be considered as a whole. Okay, so the whole mass of the external world should be considered. For the walls, the car instead, okay?
34:40:520Michele De Carli: For this walls, it helps us to go see not half of the NAS of this walls, okay? Why?
34:47:909Michele De Carli: Because…
34:50:929Michele De Carli: just half of the mass of the wall is participating, okay, in the… in absorbing the heat in this room. The other half of the thickness of the… of the wall is participating to the other room.
35:06:930Michele De Carli: terminal in action, right? So that is why we… you consider just half of the mass of the internal
35:15:630Michele De Carli: Okay, so the internal worlds have to be considered as a health in terms of the mass contribution, because the other 50% of the mass contribution is for the other wood, okay, the other children. Okay, so we are not considering this.
35:31:810Michele De Carli: Good for the whole… for the whole level.
35:35:900Michele De Carli: For the… for our moon.
35:41:570Michele De Carli: Again, as I told you, we are going to do
35:45:100Michele De Carli: simplified approach, okay? I'm not interested in detailed calculation, okay? We just need some figures, some…
35:52:780Michele De Carli: numbers, okay, to be then used for the radiant system, so… so what I, what, what here, if you have unneeded spaces, okay, or whatever, you consider them as internal, okay, so you don't have to consider, okay, strategies or whatever, corridors.
36:13:310Michele De Carli: The double system, okay?
36:15:400Michele De Carli: Or they could be included fully.
36:18:60Michele De Carli: In other words. Of course, if you are doing… Remember that if you're managing.
36:28:40Michele De Carli: two rooms, and you have a separation of the wall inside, you have to consider this wall as a whole for your room. Because this is included in your… in your model, okay, in your zone.
36:40:930Michele De Carli: Gracios?
36:47:450Michele De Carli: -Oh, yes.
36:49:880Michele De Carli: Why did we ignore the thermal immersion and the period of New York? What move?
36:55:390Michele De Carli: For conduction through windows, we say that we ignore the magnitude. Yeah, the happiness of the window is…
37:03:910Michele De Carli: And we know… Considering in the case of solar dish.
37:07:750Michele De Carli: Always.
37:08:970Michele De Carli: I mean… Window, okay, you can come, if you like to place this window.
37:15:800Michele De Carli: You can meet capital person, and you visit that, and you, and you put this window here, okay?
37:22:810Michele De Carli: Imagine to have, like, this kind of world here.
37:27:420Michele De Carli: For people, you're not able to use stuff. Imagine that you have a dispatch application list, okay? It's not…
37:37:110Michele De Carli: So the heaviness of the walls is so huge, it's order of magnitude greater than the heaviness of the wheels.
37:47:370Michele De Carli: So, that is why, usually I'm consuming.
37:50:260Michele De Carli: D.
37:51:330Michele De Carli: Termination.
37:53:650Michele De Carli: Hey, sorry, I wanted to open again the Excel file, maybe.
38:08:350Michele De Carli: Okay.
38:10:470Michele De Carli: Got it, my profile.
38:26:900Michele De Carli: If you have glass yards, It's in a buffer.
38:34:990Michele De Carli: No, basically.
38:44:370Michele De Carli: This is happening, please.
38:46:240Michele De Carli: That's beautiful.
38:51:30Michele De Carli: So…
38:58:30Michele De Carli: So, as you have seen yesterday, okay, this is the file that we are going to use.
39:02:980Michele De Carli: Okay? It's smoother, so we can download it, okay, and you can play with it.
39:10:270Michele De Carli: Here you see? This is, someday, the…
39:23:160Michele De Carli: So, hour by hour, depending on the…
39:28:700Michele De Carli: orientation, depending on the heaviness of the strap, of the works, okay? Sorry.
39:39:00Michele De Carli: I forgot to mention one point here. I didn't finish the question here. So, the word of the room is the…
39:49:960Michele De Carli: Wars, massive,
39:52:360Michele De Carli: Entire wall mass for the external walls, okay, of the walls, and the half of the internal mass of the walls, okay? Of course, the…
40:04:720Michele De Carli: RL mass is the kilograms per square meter, so we have to multiply this by the surface, okay, in order to add that in as the kilograms of the mass.
40:14:720Michele De Carli: And you sum the mass of all the surfaces, and then you divide by the floor area. Okay, so what you get, basically, is the
40:25:880Michele De Carli: specific mass per square meter of floor area, okay? So, in this case, so this is what we usually do, and this is the thermal capacity of the room.
40:39:430Michele De Carli: We… okay.
40:40:990Michele De Carli: Okay?
40:42:970Michele De Carli: So… you can… You can see the list of the attribution factors, okay?
40:52:730Michele De Carli: In this, in this sheet, you have 3 sheets.
41:00:130Michele De Carli: And now I'm just doing mine, where you have the aggregation factors for the different interpretation, so Northeast.
41:11:930Michele De Carli: We've been here.
41:13:230Michele De Carli: Northeast, east, southeast, south, southwest, west, northwest, and north, okay? And you have to consider… these are the attentional factors, okay? So, you have to…
41:28:10Michele De Carli: multiply this… sorry, okay? Yes, of course, you can select the…
41:39:50Michele De Carli: a specific mass, okay, if… I mean, again.
41:43:930Michele De Carli: you can calculate it if you like. If you don't like, you can consider the average value, okay? You will not be given extra points if you do the calculation.
41:56:550Michele De Carli: But you will not have negative points if you do that, okay, because this could be a useful, okay, a useful calculation.
42:06:350Michele De Carli: And useful for the final map, but useful for you if you want to play.
42:11:680Michele De Carli: Anyway, so we could use the average value, okay, and you can consider this average value.
42:18:890Michele De Carli: So, as you can see here, okay, the average value, the maximum is at, let's say, 10 PM AM, okay, solar time, okay?
42:31:170Michele De Carli: And, south is at, 3 in the afternoon, and west, you can see, it is, it is, it is, it is, it is at 7 in the afternoon, okay?
42:46:850Michele De Carli: Okay.
42:50:490Michele De Carli: So…
42:54:880Michele De Carli: Yes. So, you have to, you have the, being…
43:03:690Michele De Carli: Okay, I will enter in Windows, okay, and it will show me everything inside.
43:18:730Michele De Carli: By the way, yesterday, I made a mistake, okay, sorry. I sent… so don't, sign in in the… did you sign in in the Google form that I sent you? No.
43:31:590Michele De Carli: Don't do that, right? So, sorry, that was my mistake, you postpone another.
43:38:450Michele De Carli: issue. I made that sign a nasty.
43:41:600Michele De Carli: I, I made it for, you know, confused with. Okay, so,
43:47:130Michele De Carli: You have here, okay, well, this is the table of shedding coefficient, okay, so here you have the table of shady coefficient, okay, here you have some reference values, okay, some…
43:59:470Michele De Carli: Values that you could consider, okay, here.
44:03:480Michele De Carli: Okay, depending on, on the type of glass that you have, okay, there is a difference, the GD, the shading coefficient, okay? The shading coefficient, you can see, okay, that, you have the CS, okay, as you
44:23:40Michele De Carli: as you… you can, engine laugh.
44:28:140Michele De Carli: Okay? If you have some doubts, you can ask me, okay?
44:31:590Michele De Carli: But, let's say…
44:36:410Michele De Carli: any… value… these… acceptable urgency.
44:44:960Michele De Carli: Below one, of course, okay? So…
44:48:820Michele De Carli: So this is, instead, the table of the maximum
44:54:430Michele De Carli: specific power that you have for the different latitudes, okay, so the kind of latitude you could select, okay, to consider floating this.
45:04:200Michele De Carli: North, okay?
45:05:760Michele De Carli: Of course, you have the different, north, okay? This is… the columns are representing the…
45:13:580Michele De Carli: orientation, and here you can see the, the considered month, of course, here you have to consider July, okay, because July is the design day, okay, even though we have maximum deflas in June, but usually the maximum
45:30:40Michele De Carli: The desired conditions are in July, okay?
45:33:300Michele De Carli: In any case, there is not so much difference, okay, between July and June, in terms of maximum
45:39:250Michele De Carli: some radiation for the specific organization, okay? So, you can see that there is a very small difference, okay? Just maybe 10.
45:52:40Michele De Carli: 8 southeast.
45:55:210Michele De Carli: So, it's,
45:56:730Michele De Carli: So, you can see East, is, the 17 is… Yes, I wanted to show you, East around 17, and what's about the same, okay, because they are specular, okay, symmetric condition, okay, PST condition is symmetric condition, okay, with respect to minimum time, because we are considering
46:15:720Michele De Carli: This all the time.
46:19:430Michele De Carli: Alright?
46:22:670Michele De Carli: No, the outcome.
46:29:920Michele De Carli: Okay?
46:31:780Michele De Carli: Something else, no? Well, here you have the carrier, okay. Yes, I put some, psychometry, okay, and… background?
46:44:80Michele De Carli: But, so I assume that you know very well.
46:47:80Michele De Carli: The, the psychology.
46:50:100Michele De Carli: Okay, because tomorrow we go… Okay.
46:57:100Michele De Carli: I will begin with this.
46:59:830Michele De Carli: They look poor.
47:01:820Michele De Carli: Okay, but you will have the overall group, okay, so I, I strongly, I strongly encourage you to look at the report, okay, geometry, because tomorrow.
47:13:880Michele De Carli: Maybe also today, okay, we are going to… Hello?
47:23:90Michele De Carli: the 70s, the worst Beneca, it was also even worse than the Guno, okay, so served by this… now, Barrella, for instance, okay? So, I mean.
47:33:20Michele De Carli: I will beat you very hard, okay? So, but it would be, I think, one of the
47:40:240Michele De Carli: most beautiful nature that you could get, okay?
47:45:370Michele De Carli: Okay, so this is what you should do. Okay, so basically, you have to consider the maximum solar radiation for this orientation, okay, for July.
47:55:890Michele De Carli: This latitude, the surface area of your windows, and the shedding coefficient of your window. And in case you have more than one
48:06:620Michele De Carli: window. Now, more than one window on the same orientation, you sum up the surface, okay, of the windows, but if you have more orientations, you consider the orientations, okay, by superposing the edges.
48:20:600Michele De Carli: Of course, you will probably have OPAC and transparent parts in the same wall, okay, external wall.
48:32:740Michele De Carli: You have for sure, okay?
48:35:850Michele De Carli: So I made it a little bit complicated, but it's fine, okay, so… Thanks, Edie.
48:44:60Michele De Carli: no pain, no gain, okay, remember this sentence, okay? In this case, so remember, for the upper world, you have to consider the delta T equivalent, and for the elements, okay, you consider the
49:00:190Michele De Carli: updated, sure.
49:01:620Michele De Carli: Gate?
49:05:80Michele De Carli: In case you have just a… Walking.
49:12:460Michele De Carli: Okay, now, for… and this is all, okay? They… I want to show you the third,
49:20:710Michele De Carli: sheet, okay, you showed me yesterday. This is the external temperature, okay, so Mia, you said the…
49:28:20Michele De Carli: Outdoor design conditions, okay?
49:32:50Michele De Carli: And so the maximum temperature in the delta T
49:35:720Michele De Carli: And based on this, on the slide that I show you, okay, when we talk about weather conditions, okay, here you have already the pattern of the temperatures in the desired conditions, okay? So, this is…
49:53:240Michele De Carli: It's, it's, Palo, okay? So, either, he used other locations, he used the location, so the local clinician, right?
50:01:980Michele De Carli: The list is the condition for the location, okay?
50:05:240Michele De Carli: So, just to give you… Right.
50:09:520Michele De Carli: which I could buy if everything would change, okay? So it's… Okay, so…
50:17:280Michele De Carli: So you don't have to do much, okay, work on that, okay? Just use them, okay? So…
50:28:500Michele De Carli: So, sure, sure.
50:30:480Michele De Carli: Yes.
50:40:320Michele De Carli: Now… We have left, so we have seen.
50:46:760Michele De Carli: What enters through the world, what enters really knows?
50:52:640Michele De Carli: I want to… Close with what we
51:00:410Michele De Carli: the five at the previous… at the beginning of this part, okay, which is the Internet of Games, okay? So, Internet of Games, we just… we have just said how to, let's say.
51:11:420Michele De Carli: How they play, the role, and how to structure and all.
51:17:370Michele De Carli: The way you calculate the effect of the internal gains in the carrier method, so in this method, okay, is, of course, considering the thermal inertia of the room, and this is already calculated, or just defined, okay, with the
51:31:630Michele De Carli: the specific mass peripheral area of the room. Okay.
51:37:400Michele De Carli: And it is a question on the duration of the interference, okay? So, depending on how long they last, okay, you can define the so-called storage factors, okay, the storage factor.
51:53:590Michele De Carli: And so you can foresee the solar factor, okay, which means a dimensional effect, dimensional factor then is multiplied by the internal value, okay?
52:25:80Michele De Carli: Okay.
52:26:20Michele De Carli: And… This is, of course, okay, particularly relevant when we consider
52:34:440Michele De Carli: office rooms, okay, so when we know the scheduling of internal games, okay? But, I mean.
52:41:130Michele De Carli: Usually, in buildings, in residential buildings, we have not really specific, scheduling, okay? Remember that here, you… so, for… in your case, yes, that is what it is.
52:59:410Michele De Carli: Well, I'll tell you later.
53:01:280Michele De Carli: And…
53:04:280Michele De Carli: In your case, you don't have to consider the storage factor, okay? So you should just consider the technology of your…
53:11:220Michele De Carli: of your teaching, right? Which could be completable, cycles.
53:18:400Michele De Carli: 4 watts per square milliliter periliate, okay? You could even increase it, okay, in case
53:25:510Michele De Carli: But if you know the…
53:29:640Michele De Carli: electric loads of your building, okay? You can center the Electricity? Well, it is complicated.
53:38:10Michele De Carli: use…
53:39:250Michele De Carli: for the office coming, okay? In principle, all the electricity that is used in the building is internal game. If you want, you can look at the average watts that you have, okay, in the house, but I can…
53:57:490Michele De Carli: Based on one year bill, divided by the…
54:00:960Michele De Carli: There are 8,700 CT, which I've been able…
54:04:890Michele De Carli: Times 1000 is the watts that you need, on average, okay?
54:10:700Michele De Carli: If you have the air conditioning.
54:12:940Michele De Carli: It should be not there, but then you have the internal loads of the people, and so on, cooking, so use it. If you want, it's a different thing, but you're not obliged, okay?
54:22:60Michele De Carli: Inside, you can use 4, a little bit more, and… So, regular names, usually in a big… in a residential meeting, they do not play a big role, okay?
54:37:310Michele De Carli: So… You don't have to consider that?
54:42:40Michele De Carli: In case you consider them, you don't… if you will use this method, okay, in the future, remember, that is what I wanted to highlight, that in this case, the, sorry, the storage factor, okay.
54:58:950Michele De Carli: they are starting when the heat gain starts. And so, the list of the storage factors that you
55:07:880Michele De Carli: that you get is when the internal game starts, while the attenuation factors and the identity equivalent, they start at 6 AM, okay? So, if you go here, okay, they start at 6 AM, okay, so the first value is 6 AM. The first value for the internal gain
55:28:110Michele De Carli: will be when the internal game will happen. So, if people enter it.
55:33:290Michele De Carli: 9 or 8 in the morning, you put 8 in the morning as first storage factor.
55:39:760Michele De Carli: Okay, so there is… there might be a shift, okay, there is… there might be a shift between this…
55:45:790Michele De Carli: the search factor and the completion time, and that is just…
55:51:420Michele De Carli: In principle, you should consider that you consider legal times, our time, if we will have
55:57:560Michele De Carli: Still, legal times, I don't know.
55:59:830Michele De Carli: Will we have legal fantasy?
56:02:330Michele De Carli: Doncino.
56:05:290Michele De Carli: Okay.
56:08:30Michele De Carli: All right?
56:13:380Michele De Carli: Okay.
56:14:470Michele De Carli: So, now, what should you… okay, so you have to go see that room by room.
56:20:990Michele De Carli: the overall load. Okay, so room by rule, you will have the internal gain, the detonation game, you have the window gain, you have the solar gain, you have the… so the automation factors, the…
56:35:980Michele De Carli: Delta T equivalent, okay, so you have to deduct room by room, okay, you have to sum the different contributions, which are
56:44:620Michele De Carli: The, the dimensional gain, the, the, the energy, the power, and the conduction power to the window.
56:55:400Michele De Carli: So, all the list that you have seen. So the internal gains, the OPAC contribution, the window, the soil.
57:04:670Michele De Carli: The solar load, the solar window, and so on. So, for each room, you build up, hour by hour, okay, the sum of the different contributions, and this will make that to the local.
57:19:580Michele De Carli: pooling power, which is the power that has been… has to be provided by NISA.
57:26:130Michele De Carli: by that, immature system, okay?
57:30:930Michele De Carli: So this is the act at room level, okay? If you want, you can see what is… which is the major… the major, contribution. You will see that the major contribution, okay?
57:45:150Michele De Carli: That is why I want you to make the calculation. This is basically the solar radiation coming to bring it closer.
57:53:350Michele De Carli: And, then…
57:56:800Michele De Carli: You'll consider, room by room, the peak, okay, and what would be interesting also is to see the specific power, so the power divided by the floor area for this room.
58:09:460Michele De Carli: And, Ben?
58:11:450Michele De Carli: You have to consider the overall pooling load. So, hour by hour, you have to consider the sum of the different
58:19:120Michele De Carli: rooms that we consider. So, the load of each room will sum up, and the total power will be the peak load for your cooling machine.
58:32:950Michele De Carli: So the overall power of your machine, okay? So…
58:38:850Michele De Carli: That way, you would see, okay, that, the…
58:42:860Michele De Carli: As you can see here, okay, the effect of the dynamic calculation.
58:48:700Michele De Carli: is to, let's say, limit the power, okay? Both of the initial system and also all the production, the generation system, okay?
59:00:120Michele De Carli: Because if you consider the single peak power, then you will overestimate the variety.
59:07:410Michele De Carli: Mom.
59:09:500Michele De Carli: Okay, so this is what you have to do, okay? So this is basically what to do.
59:17:610Michele De Carli: Okay, so, so your… this is the, let's say, the second part of your calculation, so the first part has been the…
59:27:220Michele De Carli: Peak power for heating and the simplified degree day calculation energy.
59:32:130Michele De Carli: And this is the peak power that you have, the minimum and over the peak power of your Homes.
59:40:340Michele De Carli: Gent?
59:41:340Michele De Carli: Restios?
59:46:240Michele De Carli: No questions.
59:48:410Michele De Carli: Okay.
59:52:170Michele De Carli: Okay, now, I want just to, show you, okay.
59:57:80Michele De Carli: I want just to tell you that, of course, You had your work, Finishes here, okay, interpolation.
00:05:00Michele De Carli: Usually, again, when you're designing a recruiting
00:11:430Michele De Carli: the cooling, system, okay? You have also to estimate the energy related to the,
00:19:840Michele De Carli: work operation of this system in standard condition, okay? So, you have different calculation methods, okay? So, you can use the dynamic simulation, as you did, okay? This is still used, okay, for the… this is the, the… the…
00:39:810Michele De Carli: Steve used methodology, okay? Used based on pantry, that is okay. So, the, the…
00:56:910Michele De Carli: The certificate of your house, okay, is…
01:01:90Michele De Carli: Based on this calculation method. Okay, so this is the standard calculation method, okay, that has been introduced in the 90s, okay, as European method.
01:09:890Michele De Carli: And
01:13:660Michele De Carli: But I don't know if, Jakob only mentioned it in energy meetings, but this calculation method, which is still valid today, comes from here, actually, from one of the former professors over the years here, Padu Assessment in Bina, okay?
01:27:310Michele De Carli: A year later, we first introduced this, let's say, simplified method. It's called quasi-steady-state method, okay?
01:35:110Michele De Carli: Why was this a mistake? Because it considers, let's say, the average condition, so almost a mistake, but inside, it considers somehow the dynamic behavior of the beating, okay?
01:49:120Michele De Carli: So, I want just to give you, okay, a very quick view, okay, we won't go in detail, but just to explain you how it works.
01:57:640Michele De Carli: Of course, it is called… it's not only used just for cooling, but also for heating, okay? I introduced the heating here because we started talking about the dynamic behavior of the structure, okay? So, it was a little bit,
02:13:160Michele De Carli: And you won't participate in the heating part, okay? So that is why I tell you that.
02:19:750Michele De Carli: But also, we'll explain you why you are overestimating slightly the demand of your house, okay, based on the pure
02:28:570Michele De Carli: degree day calculation, okay? So, here you can see this is an average monthly condition, so this is the average day of the month, in heating season. Of course, you have to consider the
02:44:800Michele De Carli: heat loss. Hit thrust is what you lose from the envelope, okay? So, transmission thrust and ventilation thrust, okay? Hour by hour, you can see that the blue line represents what is
02:58:760Michele De Carli: Lost by your building, okay? So the power, the average power, power by power, Or energy, okay?
03:08:750Michele De Carli: designated.
03:10:20Michele De Carli: But it doesn't… it's magic, but it's… you can explain it, you can do that in…
03:16:60Michele De Carli: kilowatt hours are in hours, okay, so that is why we talk about average power, okay? It's the energy, not serial power.
03:25:20Michele De Carli: I mean, it's just a question of definition, okay? So…
03:30:700Michele De Carli: Hour by hour, the blue line represents what is losing your building, okay, or your room, but let's proceed.
03:39:910Michele De Carli: On the other side, the red line represents the heat gains, okay, or the effect of the e-games. Of course, considering also the…
03:51:450Michele De Carli: per month capacity of the water, okay? And in this case, the… of course, the maximum of the heat gains is during the day, because we have a solar emissions, which is particularly pivotal.
04:06:900Michele De Carli: And of course, over… then you have the maximum temperature… you have a swing in the temperatures, okay, so the maximum of the heat loss is the minimum temperature, okay, in the early morning, and the minimum heat loss is when you have the outer
04:28:680Michele De Carli: In, afternoon, considering also the delay, okay, of thexel.
04:33:600Michele De Carli: So, at the end, you have the blue line and the red line, and of course.
04:41:260Michele De Carli: the heating that is required by the building is the difference between the blue line and the red line, but if the red line is
04:53:10Michele De Carli: If the red value… the values of the red line are greater than the values of the blue line.
04:58:990Michele De Carli: then this extra heat gain is lost. Okay, so it's not useful, okay, it's unusual, because it's…
05:07:720Michele De Carli: leading to a overtime tattoo.
05:11:640Michele De Carli: Of course, you could say, well, that this over 102 will be, let's say, stored
05:16:580Michele De Carli: kit for the following hours. But as I said, for simplicity, it is considered that you are not able to exploit this
05:25:710Michele De Carli: gains through.
05:27:580Michele De Carli: So, they… energy demand of the building is the, for this month, is the…
05:35:920Michele De Carli: Keep the loss, the energy lost by the building.
05:40:360Michele De Carli: Minus the useful energy of the gains, of the heat gains, okay? So, which means that it is the…
05:48:500Michele De Carli: red area that I'm… okay, hi, I've been here. So, all the, what is below, always, either the red line or the blue line, okay? And that is… this is the…
06:04:370Michele De Carli: heat gain coefficient, okay, the heat gain coefficient, which is, okay, Function of the
06:15:630Michele De Carli: time constant of the building, so it considers inside the thermal capacity of the building, so that is why it's called quasi-steady-state method. So it's a steady-state method because here you use the heat loss coefficient, okay, that we used for the design conditioning heating, okay, so the U values of the walls, basically.
06:35:770Michele De Carli: Here you consider the energy that is,
06:40:00Michele De Carli: The overall internal gain is in solar energy entering the room, okay, in this month. But then this, the amount of energy that you can exploit is function of the
06:55:970Michele De Carli: time millennials of the stratum, okay? So, this coefficient can be related, or is a function of the time constant of the
07:05:620Michele De Carli: Okay?
07:08:40Michele De Carli: Did Jakartovillian told you about the time constant of a building?
07:13:30Michele De Carli: Yes? Okay, so for the ones of you who did not the energy bidding course, you can ask your colleagues who did it to explain that, okay?
07:21:610Michele De Carli: Okay, so this method is… Matching almost perfectly there.
07:27:450Michele De Carli: Net energy demand for heating, okay?
07:30:240Michele De Carli: Of course.
07:32:30Michele De Carli: What you… what we are in… when you use, when you consider the degree…
07:38:240Michele De Carli: I open the same bracket here. Okay, so,
07:42:780Michele De Carli: When you consider the… you are going to calculate the…
07:46:920Michele De Carli: net energy demand with the ingredients. Okay, so we are not…
07:50:460Michele De Carli: Considering the effect of the solar radiation, and you're not considering any effect of the, let's say, terminology. So it is a very simplified and oversimplified method, so you are overestimating the energy demand of your beating, okay, of your liquid.
08:10:540Michele De Carli: I don't care, okay?
08:13:800Michele De Carli: Because, like, it is just to give you some, let's say, the feeling of the demand and consumption.
08:20:359Michele De Carli: Okay, so this method is perfectly working when we consider the winter condition. So it's working, so it provides accurate results.
08:32:979Michele De Carli: when the temperature difference between inside and outside is large, as you usually have in heating season, okay? From eating season, we have at least 8 degrees as average temperature difference between inside and outside, because I told you.
08:49:550Michele De Carli: Above 12 degrees as average temperature, you don't need anything, okay?
08:55:60Michele De Carli: This method is a little bit more complicated when we consider the cooling demand, because in this case.
09:02:859Michele De Carli: I won't go too much in detail, but the principle is similar. I don't want to go in detail about that. I want just to tell you that it is a little bit complicated, but not
09:15:640Michele De Carli: Let me see. It is…
09:19:60Michele De Carli: In cooling conditions, the… this methodology is leading to,
09:29:649Michele De Carli: Not so accurate results, okay, because…
09:33:229Michele De Carli: Because the temperature difference between inside, 26 degrees and outside, look at the average temperature, it's documented here.
09:42:340Michele De Carli: is very…
09:43:770Michele De Carli: limited, okay? So this methodology is not that precise. So that is why, okay, still it is used, so when you do the energy calculation of your house, when you do the energy certificate.
09:56:990Michele De Carli: Use that, okay, you're underestimating with this methodology, with this method.
10:04:400Michele De Carli: But your… your second certificate of your house is mainly based on this condition, on this percussion, because it's very simple. It will take just one calculation for the house, but it's not accurate for the community.
10:17:740Michele De Carli: projecting you, okay? So that is why today, well, based on the standardization process, okay, the…
10:26:310Michele De Carli: The commercial tool, okay, allow you to have the calculation both in this way and also with dynamic, okay, simplified with resistance and capacity.
10:38:420Michele De Carli: method. Dave?
10:41:120Michele De Carli: Clear.
10:43:320Michele De Carli: Okay, so… Whatever, whichever method you use, okay, you are going.
10:53:850Michele De Carli: Also, not only for eating, but also for cooling, okay, to, design, the, the, the…
11:06:590Michele De Carli: the cooling load, okay? So you are going to design a group. So, based on your calculation, you have room by room the cooling load, okay? And you… and you estimate as you will.
11:18:100Michele De Carli: Now, what is this, load? What does this load? Okay, this is,
11:26:960Michele De Carli: This is, again, okay, the sketch of the typical,
11:32:680Michele De Carli: typical cooling systems that we might have, okay, in a… in a building, okay?
11:41:70Michele De Carli: And I'm happy to be here, because in this case, exactly in this case, we have exactly this kind of… the first type of bullying system. Okay, so…
11:51:350Michele De Carli: These, are fan coils. Let's say these are fan coil units. So here you have a cooling coil.
11:59:370Michele De Carli: With a fan, okay, which is moving the air to force the air to, the coil, the human coil.
12:10:270Michele De Carli: Inside the cooling coil, you have chilled water, and so you have cooled water, and usually…
12:17:470Michele De Carli: The usual 10 countries.
12:21:530Michele De Carli: that we use for cooling is 7 degree supply per minute. Okay, so the water enters colder, and of course, it absorbs the
12:32:680Michele De Carli: the load of the building. So, it will heat up, and then water out will be… say, the opposite of…
12:43:740Michele De Carli: In this case, or don't.
12:49:750Michele De Carli: We have the…
12:51:430Michele De Carli: We have the, green, okay? And we have the ventilation, which is airy in this case, because we open the windows, okay, whatever.
13:04:460Michele De Carli: So, in this case, we need to face the Boom.
13:10:450Michele De Carli: cooling order that we calculate, okay, in the cooling order. And also, okay, in the cooling load, we have to proceed up included, okay.
13:20:590Michele De Carli: We have to consider also the activation, okay?
13:25:750Michele De Carli: So based on the Kuni law that we are calculate… we are calculating, okay.
13:32:480Michele De Carli: the ventilation is included, because you have to estimate the ventilation period, okay, which enters the algorithm, for instance. Okay, then you decide the size, of this, system, and you select if you need one, two, or three, okay, or many, okay?
13:51:970Michele De Carli: In this case, of course, again, the cooling emission system will be based on the temperature difference between the water and the room.
14:06:40Michele De Carli: Okay, because in this case, you have more or less 16 degrees as average temperature difference between average temperature of the water and the room, okay?
14:18:190Michele De Carli: you decide the type of emission system in the surface, okay, of these things, okay?
14:27:740Michele De Carli: And of course, you will also, as a consequence, Five. B.
14:35:380Michele De Carli: mass flow rate of the water, okay, because… also in this case, okay, you have to consider the power that this system is going to absorb.
14:47:310Michele De Carli: Okay, is… And Dr. C, the data tree of the letter, right? Same topic.
14:54:180Michele De Carli: The difference of the water, times they must run it to do.
15:00:590Michele De Carli: Great.
15:01:800Michele De Carli: Of course!
15:03:530Michele De Carli: Okay?
15:04:610Michele De Carli: I don't want to go in detail about that, we will talk about that when we talk about this kind of system. Okay, we need to consider that some magnification is the ideal ratio, okay?
15:17:760Michele De Carli: So, in this case, we should consider
15:21:500Michele De Carli: in cooling, we need also then consider also the latent load, but this is not part of the current method, or the sexual load, okay? We said that we can do separate calculations, okay? Separate…
15:34:360Michele De Carli: So, what we did so far is the sensible, but remember that we need those sequence amount, the identification, okay?
15:46:310Michele De Carli: Why the humidification? Because here, you have air entering.
15:51:450Michele De Carli: With high relative humidity. So you have outdoor temperature entering directly in the room, so you need, as we see later tomorrow, to dehumidify the air.
16:00:760Michele De Carli: The second system is what we see
16:03:590Michele De Carli: what we saw yesterday when it was… yesterday? For the heating, so it's the same, so it's similar.
16:11:260Michele De Carli: So in this case, it's similar to here, but imagine that we might provide also some fresh air, okay, with some air terminal diversity, of course, with guts. And in this case, we have a… an air handling unit, okay, so we will
16:25:700Michele De Carli: handled here, okay.
16:28:990Michele De Carli: So, in this case,
16:32:950Michele De Carli: In this case… Okay, sorry. In this case, okay, we just consider the deletion, so outdoor air entering, okay? Either airiness, Nick's case.
16:44:520Michele De Carli: or with also even mechanical ventilation. So in this case, we consider, of course, the mechanical ventilation. Of course, if we have mechanical ventilation with the heat recovery unit.
16:57:140Michele De Carli: That will be part of the calculation in the carry.
17:00:230Michele De Carli: Okay?
17:01:670Michele De Carli: Now, here, what we do, basically, we supply air at, let's say, almost winter temperature of 600 to 90 degrees, okay?
17:11:650Michele De Carli: It'll be even cooler, right? If it doesn't matter, like, just nuclear, this is just… Ready? Yep.
17:19:530Michele De Carli: So, in this case, you should consider, okay, then that we do the calculations, considering, okay, in the ventilation, hour and a half hour, you consider the effect of the, of the incoming
17:35:940Michele De Carli: prorates of the ventilation lifted this trapped. This will be part of the calculation of the current electron, okay, because
17:44:550Michele De Carli: It's in the first equation that we have seen when we introduced the current topic.
17:49:720Michele De Carli: And at the end, we have the cooling load calculation. So again, we resize this system, right?
17:56:380Michele De Carli: For, again, with the same, with the same, so again, this water to rule the exchange, so we need to define the, overall the transfer coefficient of the, of the initial system and the surface.
18:15:10Michele De Carli: of this system, okay? Of course, in this case, the… the unification.
18:23:890Michele De Carli: is made here, okay, in this area. So, this is the air and water
18:32:450Michele De Carli: Solution, okay, the primary error on good solution.
18:37:510Michele De Carli: And that's it, I don't alright, so,
18:53:780Michele De Carli: And, again, if you have,
18:57:60Michele De Carli: If you have a solution ventilation pro rates that you might, okay, cover the cooling load by the ventilation pro-rate, okay, you can have the so-called full-hear
19:10:930Michele De Carli: pulling system, okay, where you have just air, so with air entering the room, okay, you can face the
19:20:470Michele De Carli: You can face the cooling land.
19:23:450Michele De Carli: Okay, remember in this case, okay, as we see tomorrow, that you cannot go in eating
19:31:440Michele De Carli: you could, in principle, go higher as you want. Of course, there might be some difficult problems, and so on, but let's say you don't have physical, let's say.
19:42:260Michele De Carli: Barriers in the temperature that you provide in the room.
19:47:80Michele De Carli: In cooling, you have, because usually you don't go below 16, 15 degrees C, okay, so there is a limit in temperature in the entering solids… no, the entering not solid, in the entering temperature of the air, when you supply air.
20:05:200Michele De Carli: Okay, because you have to avoid any condensation problem in a layer terminal devices, okay? So that is why you usually keep 16 degrees, 15 degrees as much as me.
20:16:490Michele De Carli: Meaning type.
20:17:770Michele De Carli: Dength?
20:19:140Michele De Carli: Source, in this case, and of course, here.
20:24:20Michele De Carli: You will have to face the whole, let's say, enthalpy.
20:28:270Michele De Carli: change between supply temperature and supply condition, okay, and the outdoor conditions. We will look at that tomorrow.
20:37:940Michele De Carli: Okay, and again here, as we will see tomorrow, okay, again, you have two possibilities. One is if you have enough flow rate to cover the
20:49:510Michele De Carli: the power that is needed by the building, so you just use just fresh air. In case you need to… the amount of the flow rate is so huge.
21:03:320Michele De Carli: Or greater than the fresh air, then you can consider to have some recirculation for air, okay, in order to supply more air than needed for indoor air quality purposes as fresh air.
21:23:40Michele De Carli: Okay?
21:26:460Michele De Carli: Okay, so…
21:39:70Michele De Carli: 5 minutes left.
21:46:790Michele De Carli: The noise was really quite, reserving?
21:55:140Michele De Carli: 5 minutes.
21:57:230Michele De Carli: Okay, we can leave 5 minutes for… I mean, it's not, I mean, tomorrow what we are going to see the report, okay? So, take care about the customer metric, okay? And if you have some questions for the, for the, for the…
22:16:930Michele De Carli: For your case study, okay, I'm going to find it here, and I won't… Okay!
22:24:60Michele De Carli: Good evening, right?
22:26:20Michele De Carli: Nice headache.
22:30:430Michele De Carli: Honestly.