Assistente AI
Trascrizione
00:01:20Michele De Carli: All right, so first of all, okay, like, good morning, of course. I want, just to, just to, let's say, rake up, okay, that,
00:15:630Michele De Carli: You have, in the section of report, okay, you have the… Okay.
00:25:920Michele De Carli: You have, the…
00:33:250Michele De Carli: Wait a minute…
00:40:430Michele De Carli: Okay, so you have the chance to… to, let's say, take part, okay, to, one of the groups, okay? I don't know how many of you did already feeling, okay? You have time until this week, okay? I think it's… when is it?
00:57:100Michele De Carli: the 17th, I see.
00:59:60Michele De Carli: Yeah, 17th of April, okay.
01:02:740Michele De Carli: I had no idea any issue.
01:05:69Michele De Carli: I think it's Friday.
01:07:20Michele De Carli: Right?
01:08:700Michele De Carli: Yes, Friday night.
01:12:10Michele De Carli: Friday night, okay, to sign in and, and
01:16:200Michele De Carli: And, and sign in one of the groups, okay? I hope you don't mind, okay, any privacy issues and so on, okay? So, so, so far, these are the names that are inside, okay, and that's… okay, so please sign in your name.
01:35:210Michele De Carli: And, and, be, in,
01:40:670Michele De Carli: So be, please participate in the group, okay? So…
01:45:200Michele De Carli: We are going to see today the… how to size them.
01:50:560Michele De Carli: the, how to size the system, and we are going then to go… to move forward to the…
02:02:850Michele De Carli: To the… to the… To the next part, which is the hydronic part, okay, but we will see…
02:12:00Michele De Carli: We will see later on, okay? And, Thursday, okay, we are going to, to…
02:21:90Michele De Carli: to go in detail on the sizing of the ventilation system, and we are going to, okay, explain you also how to use the Excel tool that you have to use in order to size the system, okay? And we are also going to explain you what we require from you on the
02:40:600Michele De Carli: Group work that you're going to do.
02:42:720Michele De Carli: Okay.
02:44:230Michele De Carli: Grayscale's?
02:46:240Michele De Carli: Okay, perfect.
02:50:160Michele De Carli: Alright, so now we have to…
02:58:30Michele De Carli: idiot.
02:59:780Michele De Carli: Spencer.
03:11:340Michele De Carli: Alright.
03:13:240Michele De Carli: So… Let's, let's go on with the day, with the sizing of, de… Okay, so…
03:27:120Michele De Carli: This is the last, let's say, as we have said.
03:32:730Michele De Carli: We have talked about, just to cut a little bit, we have talked about, let's say, the general processes of the inner quality. We have seen the retination rates, okay?
03:44:520Michele De Carli: more or less, we are seeing how to estimate them. I would like to tell you that the… in the new standard, there are some options that you might select for sizing as the… or to choose, for choosing the
04:01:720Michele De Carli: To choose the…
04:03:970Michele De Carli: the duration rate, okay. We have seen how to distribute, I mean, which are the different, systems that, or subsystems or elements in, in a…
04:18:390Michele De Carli: in the air distribution system, we have seen the air unit, which is, of course, peak technology. And, yes, now we are going to see the last, let's say, the last element, okay, which is
04:31:460Michele De Carli: up here.
04:32:360Michele De Carli: Which is the… the…
04:35:520Michele De Carli: the air terminal device, or the air diffuser, air ventilator, how you want to name it, okay? So we have seen how they are made, and now we are going to see how we can size and how we can select, okay, the air terminal device.
04:52:510Michele De Carli: So, we, were here, I think, last time, right? Maybe? Okay. So we have seen the requirements of this room that we have to
05:04:170Michele De Carli: we have to supply with air. We have seen that we need to supply air due to… we have seen that we have some, let's say, issues related to the amount of fresh air that we need to supply. In this case, we are considering a fuller system, so…
05:22:380Michele De Carli: We are… we want not only to provide air in the room, but we want also to heat and cool the room by the same airflow that we are supplying.
05:32:940Michele De Carli: So, usually, we have seen that right now, with current buildings, since they are well insulated, it is not a problem to provide a fuller system for heating the building, okay?
05:45:580Michele De Carli: But the problem is related to the cooling demand of the room, okay? Because we have seen that in order to face the power, and we just consider a typical power, specific power of 50 watts per square meter, okay?
06:04:150Michele De Carli: In this case, we need, to provide more or less twice the, the air that is needed for the, for the…
06:15:960Michele De Carli: for…
06:17:410Michele De Carli: just fresh air, so we need to recirculate this amount. On how we do that, how big we do that, we just fixed 10 degrees C as temperature difference between supply and… sorry, between supply and air and room air temperature. Okay.
06:35:620Michele De Carli: And based on that, we have seen which is the flow rate that we need in order to satisfy, to face the load, the cooling load of the road, okay? So this is the overall flow rate that we need to supply. This is the fresh air flow rate, and this is the recirculation flow.
06:55:910Michele De Carli: rate, okay?
06:57:660Michele De Carli: For this one. So what we are interested in is the overall, yes, what is important, okay? This is the flow rate that we need in cooling, and this is the flow rate that we need in heating.
07:18:70Michele De Carli: Sorry, the different that we need in heating is the amount of flashing. So, we need to size the air per minute device for the maximum flow rate that we need to provide to the building, so… which means the cooling pro air flow rate, okay? So, this is the biggest amount of air that we need to supply.
07:41:340Michele De Carli: Okay?
07:43:70Michele De Carli: So, we need to provide this, let's say, 4,000 or less 300
07:47:830Michele De Carli: 3,900 cubic meters per hour, and we should now decide how much we want to split, okay, the air distribution into the room with the 3. As I told you, the bigger the amount of air terminal devices, the higher the costs, okay, but of course.
08:10:420Michele De Carli: if we…
08:11:500Michele De Carli: If we, increase the amount of air terminal devices, we are reducing the airflow rate that we use by each air terminal device.
08:22:160Michele De Carli: So, let's say we considered as, let's say, a proper amount of air terminal device, 6, so it means that we need to consider, let's say, so since we are considering 6 air terminal devices, okay, this is the amount of flow rate that we need to supply for each terminal device, so we need to
08:47:60Michele De Carli: Select near terminal device, Which is providing more or less 650 cubic meters per hour of air.
08:55:680Michele De Carli: So, the… it is not important the geometry, okay, but we are going to supply air from the roof, sorry, from the ceiling, okay? So we need…
09:10:910Michele De Carli: I'd like to remind you that one issue is also related to the plenum height, okay? Of course, the
09:18:590Michele De Carli: There.
09:22:60Michele De Carli: the greater the, the greater the prorate that you need to supply, the greater will be also the height of the planning in general, okay? So this is the sketch, and these are the typical, let's say.
09:40:50Michele De Carli: The typical parameters that you need to consider, okay, what are these parameters?
09:47:410Michele De Carli: the, as we have seen in the reticle part, the throw of the air, okay, which is the L, the length.
09:56:00Michele De Carli: So how, how, how… which is the distance from the inlet section at which we have a residual velocity, which is not…
10:08:70Michele De Carli: The, leading to draft, okay?
10:14:120Michele De Carli: Then we have the air drop, okay? So, how much the stream is falling, because we are, especially, as we have seen, in a cooling condition, okay, we are supplying air at a lower temperature, so we have an air drop, okay?
10:34:990Michele De Carli: And we need to… and we need to avoid that the airdrops, okay, lead to a velocity, a zero velocity higher than 0.2 meters per second on the head of people, okay?
10:48:990Michele De Carli: And, and, of course, as I told you, also, the acoustic plays a role, okay, because also acoustic is important.
10:57:870Michele De Carli: So now, what we are going to see is, let's say, based on… based on this, let's say, technical sheet, okay, what is, let's say, that philosophy, okay, which are the philosophy
11:11:550Michele De Carli: what is the… how we should, let's say, consider how we should select the air coming up. So I would like to…
11:19:620Michele De Carli: better than each producer, okay, has its, or its own, let's say, okay, its own, let's say, diagrams, okay? But the diagrams are very similar one to another, okay, so…
11:33:200Michele De Carli: The schematic of the diagram is the same, okay, so what we're going to see is something related to a specific character in other rice, okay? But if you look at the sample zone.
11:44:990Michele De Carli: technical sheets, sorry, that you have in the PDF that you have in the section, okay? You can see that, more or less, okay, the parameters which have to be considered to select the Earth and minimize are similar on the same, okay? So…
12:03:380Michele De Carli: This is the pattern of the air distribution system. Of course, we need to provide a regular, or let's say, okay, a sort of, let's say, symmetrical.
12:19:560Michele De Carli: setup layout of the… of the airtime ask is, okay, if so, if we consider 6 airtime nerve mass is more or less.
12:29:710Michele De Carli: we consider to happen forests in the same distance, okay? The same distance to the… to the… to the… to the… to the wall, okay? So this is the…
12:39:350Michele De Carli: let's say, the pattern, okay? Which has to be, of course, also, let's say,
12:49:260Michele De Carli: Decided, okay, or agreed with the architect, because, of course.
12:54:900Michele De Carli: Okay, you… I mean, you are meaningful without architects, okay? Yes, please. The minimum distance is just a matter of choice of how many diffusers we… Yes, yes. Yes. You could also, in principle, okay, just consider this
13:10:700Michele De Carli: as, let's say, I just considered the same distance from the center.
13:16:470Michele De Carli: the center of the air diffusers, diffuser, sorry, sorry, and each center of the diffuser and the horse. You could, in principle, also, okay, you could also increase one.
13:30:310Michele De Carli: make the, put the air terminal devices a little bit closer to the wall, okay, if you want.
13:38:450Michele De Carli: Or if there are some brothers.
13:40:630Michele De Carli: Why? Because you have that… the two air terminal devices, okay, they are, okay, they are… the two air flows are meeting, are crashing, and then you have some…
13:54:300Michele De Carli: some… you might have some air dropped because of the air strings, matching, okay?
14:03:10Michele De Carli: This parameter is… should be also given by the manufacturer. Okay, so in this case…
14:09:260Michele De Carli: Well, and in this case, usually, if you, if you just, if you just meet the wall, okay, then you might have a downstream, but usually, up to 1 meter, the surface, it's not occupied the area, so you could have…
14:25:70Michele De Carli: Then you have, let's say, not only this distance, but you have then also the height of the wall, okay? And you have to consider that there are maybe,
14:36:570Michele De Carli: You got 3.5 acres, okay?
14:39:300Michele De Carli: Of all, plus 1 meter, okay, before you treat the anchors on it.
14:45:740Michele De Carli: Okay? But this is a first button.
14:49:620Michele De Carli: Okay, so…
14:52:920Michele De Carli: So this is… so what I would like to… what I would like to recap is the distance that we are considering, okay? So this is 3.5, okay, is the… is the distance, so, between one and the other, okay? And… yes, please, tell me?
15:13:160Michele De Carli: No. This is just, it's internal between telling us, dictated by one battery.
15:23:190Michele De Carli: Ouch.
15:24:160Michele De Carli: Yes, if I… if I set this…
15:28:320Michele De Carli: distance, okay, as true, then when I consider 3.5 meters from the inlet.
15:36:520Michele De Carli: The residual velocity is already at 0.2, so even if the two streams are matching, That would be… no.
15:45:260Michele De Carli: high velocity below the stream. Okay, so if you consider, for instance.
15:52:230Michele De Carli: 7 meters, okay, then you have to consider that the two streams, okay, are reaching, okay, so the… the throw is dependent on the velocity that you are
16:06:760Michele De Carli: the Q… the airspeeder that is entering the greater the airspeeder, the greater the throne.
16:16:730Michele De Carli: And there are no specific concerns. In this case, 3.5 meters, okay, as, as, let's say.
16:25:320Michele De Carli: So, here, between one stream and the other, and also here, we have a zero velocity of the opportunity. Does the rule change linearly with this big velocity?
16:42:100Michele De Carli: Okay, we can, we can, we can have a look at this. So, okay.
16:49:350Michele De Carli: So here, let's say the throw is 3.5, okay? The geometry of the room is 3.5 meters, okay? So this is the height of the room, which is also a parameter that we need to consider when you… when you are
17:06:369Michele De Carli: Or which, let's say, should be given by the manufacturer, okay? And, of course, the airflow rate, which is, let's say, 750 cubic meters per hour.
17:18:839Michele De Carli: Okay, so, in this case, okay, these are the parameters. So, I mean, this producer, okay, is providing the room height.
17:29:270Michele De Carli: Okay.
17:30:620Michele De Carli: The minimum distance between the, as a function of the room height, okay,
17:40:250Michele De Carli: So you can see, in this case, we have the room height between 3.2 and 3.8, okay, this is… we have 3.5, okay.
17:52:170Michele De Carli: And, and, we have 3.5 as new decency, okay, that we have considered.
18:00:180Michele De Carli: So…
18:03:830Michele De Carli: This is the area that we need to consider, okay, the height of the room. This is the, the minimum distance, which is 3.5. So, based on this, on this, let's say, on this logarithmic function, okay.
18:21:750Michele De Carli: Or let's say, logarithmic, yes, that,
18:26:900Michele De Carli: bottom, you see, okay? 3.5, you go…
18:31:430Michele De Carli: with a vertical line, okay? And, here you can see you have the air for 18 cubic meters per hour, okay? So.
18:42:540Michele De Carli: for this air terminal device. So you can see here, 650, okay, cubic meters per hour. Okay, so in this case, when these two lines are matching, okay, then you have, as a result, okay, what? The
19:03:280Michele De Carli: Pressure delta, okay?
19:07:610Michele De Carli: The pressure drop that you have, right?
19:11:810Michele De Carli: Which is, 15, Pascal, okay?
19:19:380Michele De Carli: So… that is also important, because this is the… then…
19:28:680Michele De Carli: concentrated pressure loss that you have in the air terminal device, okay, and then should be considered in sizing all the distribution network, but that work that you need to…
19:42:570Michele De Carli: consider. And, and also, okay, you can see what… The…
19:51:480Michele De Carli: acoustics power, okay, so LW is the sum power level, okay, that is produced by the air diffuser in this case, okay? So, basically.
20:03:350Michele De Carli: The, the, the topics are related to the throw.
20:07:640Michele De Carli: The height of the room, the volumetical rate that you need to supply in each air distribution area.
20:17:190Michele De Carli: And as a result, you have the
20:20:820Michele De Carli: pressure drop, okay, which is to be used then for sizing the whole network, okay? And the…
20:29:330Michele De Carli: Sound power level that you have, okay, the noise generated by the… by the… by the air terminal device.
20:38:870Michele De Carli: I would like to highlight that
20:44:100Michele De Carli: Okay, I would like also to mention that in these days, okay, since the stream.
20:51:420Michele De Carli: Since the air is, on the ceiling, okay? It sees the…
20:57:970Michele De Carli: Since the stream, their stream is, is, let's say, close to the ceiling, okay, the, in this case, you should consider the height of the…
21:13:90Michele De Carli: Of the jacket, of the Airstream, okay.
21:16:840Michele De Carli: And in this case, you… the… the producer is, is, I didn't… maybe I didn't highlight that. Okay, the producer is, is, okay, is,
21:30:280Michele De Carli: Providing, okay, the, the height of the stream, so the dropper of the stream, okay?
21:37:630Michele De Carli: or, let's say, the thickness of the stream. In two different case studies, H0 is the isothermal condition, so in case you are injecting the air at the same temperature in the room, okay?
21:51:530Michele De Carli: Or, with the time.
21:54:720Michele De Carli: Telling temporary difference between the air inlet and the room.
22:00:470Michele De Carli: Okay, so it means by… and in this case, you can see that you have to consider the L
22:08:200Michele De Carli: 0.5, okay, times the coefficient, which is 0.267. Okay, so based on these recommendations, okay, you can consider
22:21:220Michele De Carli: They, L0.5, okay, is…
22:27:510Michele De Carli: this rectangle here, okay? So you can see that you have 1.8, okay, here, in this rectangle here, 1.8 meters, so it means that after 1.8 meter, you have a zero velocity of 0.5 meters per second, okay?
22:45:170Michele De Carli: Basically. And, in this case, okay, you have, you have, we can calculate the thickness of the earth, which is half meter, okay, so it's far above the
23:02:310Michele De Carli: height of the persons, okay? Okay, so in principle, this… distribution
23:12:570Michele De Carli: This diffuser to be used even with, okay.
23:18:10Michele De Carli: smaller height of the… or even at 3 meters, okay, would not be a problem, because even if you have a height of the… of the ceiling, like we have here, 3 meters, okay, in this case, the drop of the air would not enter into the occupied area, okay?
23:37:530Michele De Carli: Okay, just to… just to make you a little bit… a very quick example, okay? What would happen if we…
23:46:850Michele De Carli: had considered 4 air inlets, okay, 1,000 cubic meters per hour, okay, in this case, in this case, more or less the distance would be the same, because you could have, instead of
24:06:180Michele De Carli: of 6'4", okay, but in this case, this length, okay, is the most critical, so you should keep, anyway, 3.5 meters, okay, as… as minimum distance, okay? And with 1,000… with 1,000…
24:26:340Michele De Carli: with 1,000 It's 1,000, cubic meters per hour, okay.
24:41:190Michele De Carli: Okay, you should have this.
24:46:120Michele De Carli: In this case, they… In this case, in this case, in this case, 3.5, 3.45, okay?
24:58:910Michele De Carli: Okay, you don't need that, but what I would like to… I advocate, we are off the analysis range, okay, but what I would like to highlight is that in this case, what would you have? Okay,
25:15:850Michele De Carli: You would have, let's say, let's consider that this is the differential stage. You would have…
25:24:910Michele De Carli: between 25 and 40 Pascal of, here.
25:33:550Michele De Carli: Pressure top, okay? And, of course, also a higher
25:39:70Michele De Carli: notice, okay? So it can show, basically, the…
25:46:130Michele De Carli: The choice of the amount of air terminal devices, okay, is related to the
25:55:110Michele De Carli: To the, to the, to the fact that if you increase
26:01:230Michele De Carli: The airflow rate for each tabular device, you will increase the pressure drop, and you will have also a higher noise, okay, because of the greater speed that is going out from the air terminal device.
26:17:160Michele De Carli: If you increase the speed of the air to another device, that will make the jet entering more at the root, so a greater flow, okay?
26:30:100Michele De Carli: But usually also a higher pressure drop and a higher noise of the… of the earth magnetized, which is not necessarily the problem, okay? It depends on the height of the… of the…
26:46:30Michele De Carli: he doesn't want to see, okay? So, so it's, it's, this is the, the way. So,
26:56:340Michele De Carli: This is a… I mean, this is the diagram which is made by this producer.
27:04:160Michele De Carli: Either producer can provide different backgrounds, but more or less, the, okay, philosophy is the same.
27:10:390Michele De Carli: Just to make you another example, okay, what would happen in case you are considering instead the same room, okay, instead of, instead of, supplying air on the, on the ceiling, you supply here on the technical, from the, let's say.
27:28:540Michele De Carli: from one side, or from one wall, okay? So, in this case, we consider the same height of the building.
27:35:990Michele De Carli: And usually, as I told you, we need to consider that the… the inlet, in this case, the lease, would be located, would be in place 30 meters… 37 meters, more or less, from the ceiling, okay?
27:52:10Michele De Carli: And, in this case, I just considered 5 units, so, okay, so a similar, a similar,
27:59:690Michele De Carli: let's say, amount of airflow rate that we had before, so which means a little bit more, because before we had 6, and now we have, let's say, 800 cubic meters per hour. This is another producer, okay, so I just… I also consider a different producer.
28:17:00Michele De Carli: In this case, okay, we want to cover the whole distance, okay? So, we want to cover 40 meters, okay, or let's say 40, 50 meters, okay, of air throw, okay, so we want the air,
28:36:740Michele De Carli: good for the rich, okay? They're opposite.
28:40:40Michele De Carli: Warning, okay, in order to… Make, okay, the air entry.
28:45:680Michele De Carli: in depth, okay, so as to have a good mixing, okay, in the room. And, and in this case, okay, if we consider the throw of
28:58:180Michele De Carli: And you can see, in this case, you select their zero velocity of the airstream. You can see, for this kind… for this producer, you're not… the minimum
29:11:620Michele De Carli: velocity that you can get at the end of this row… of that throw is 0.25, okay, so 25 centimeters per second, okay? So in this case, for 15, for 14 meters of throw, okay, and considering zero velocity of 0.25, okay.
29:33:110Michele De Carli: Again, here, the… you can see the diagram is different, but at the end, you have to select, anyway, the throw and the volumatic flow rate, okay, which is 780, so this is the… the flow rate, okay, is here, before it was…
29:52:860Michele De Carli: It goes significant.
29:54:610Michele De Carli: So, here you have the flow rate, okay, and you are going with the flow and the flow rate, and you are then getting, as a result, okay, the…
30:06:580Michele De Carli: Pressure drop, okay?
30:09:270Michele De Carli: And you can see here, now you have 35 Pascal, okay, with… you can see a greater velocity, because you need to go more in depth, okay, so the airstream has to…
30:22:50Michele De Carli: But you have to have a greater distance, so you need to… to increase the speed of the air entering the room, okay?
30:29:320Michele De Carli: And under here, you have a noise level, okay? The noise level here is NC40. I won't explain that, okay? It's a way you can also declare the noise…
30:42:950Michele De Carli: The… the… let's say the…
30:47:880Michele De Carli: the noise generated by the, by the alternating device, okay? It is under certain, defined conditions, okay? So.
30:57:510Michele De Carli: The best would be to have the pressure Sorry, the application, the power.
31:04:570Michele De Carli: the power, or the noise power produced within LW, the LW is the noise reduced the power, depending on how much
31:15:850Michele De Carli: You know, noise is emitted by the, by the…
31:19:40Michele De Carli: by the… by this, system. In this case, NC4T is…
31:25:810Michele De Carli: And in this case, since we are considering the CPUs, okay, so return, which are angry, okay, So…
31:42:180Michele De Carli: standard deals, okay? Then in this case, you have in terms of these deals, okay, so in this case, you can see that you can select
31:52:580Michele De Carli: to use a 600 by 100, so 60cm by 10cm grate, or 40 centimeters by 15 centimeters grid, okay? So it's up to you to decide what
32:06:640Michele De Carli: to decide what they… but these two are similar. Okay, so you can see that what you are having to do is to go… consider the throw, to consider the volume at the rate, and then the idea, the…
32:22:320Michele De Carli: Pressure drop, the noise level, and in this case, also the, let's say, the
32:29:40Michele De Carli: The size, the direction of the green room.
32:32:550Michele De Carli: It's just… So, that is more or less everything, and I… here, okay, remember, I didn't…
32:42:210Michele De Carli: I didn't put it, but of course, then the producer, okay, should also provide, okay, the
32:50:90Michele De Carli: the drop H, okay, so the X is the true in this case, okay? Okay, so this is the distance, but then the producer has to be… provide also the air drop, okay?
33:05:310Michele De Carli: So, how much force, how much necessary force into that, okay?
33:12:600Michele De Carli: Okay, so that's it. So basically, what you need to consider is the…
33:20:70Michele De Carli: Select it and analyze, it's okay. You need to consider how many they are, and checking if the, by considering the throw rate that you need to supply, and the throw, okay, that you need to provide.
33:36:120Michele De Carli: which is the pressure drop and the sun. Of course, I would like to just
33:42:140Michele De Carli: highlight that in this case, also in this case.
33:45:650Michele De Carli: If you increase the number of air supply inlet, okay, so let's consider, for instance,
33:58:570Michele De Carli: Yeah, let's consider 6, okay, in this case, for instance. So we have 6… or 650, okay? If we have 650, okay.
34:10:750Michele De Carli: as, if we have 650, or let's say 600, okay, let's consider that right.
34:21:500Michele De Carli: 600, okay, or finitely. Let's suppose that…
34:26:719Michele De Carli: How much was a 3 and 3 months.
34:41:820Michele De Carli: Okay, let's consider that we… let's imagine that we consider to have 7 supply, okay?
34:48:409Michele De Carli: So we would have 550, okay, 500 more or less, okay, as flow rate per air terminal in it, okay. In this case, we would have, okay, 550, let's suppose, let's suppose that this is the, the, the, the, the…
35:09:820Michele De Carli: then, no, it's not possible, sorry. But in this case, we would… sorry.
35:19:390Michele De Carli: In this case… okay, in this case, we would have…
35:23:920Michele De Carli: instead of… of course, since we are splitting the air jet, okay, we would… we would have a smaller, jet stream, okay? So let's consider that
35:35:40Michele De Carli: we had a smaller throw, okay, like, for instance, 10 meters, okay? So let's consider 10 meters in this case, okay, as…
35:45:580Michele De Carli: potential through, okay, with, 500, with 550, or 500 cubic meters per hour, you can see that at the end, okay, you have,
36:01:60Michele De Carli: a smaller pressure drop, okay, because you are going here, okay? So, in this case, you have a smaller pressure drop, okay?
36:11:190Michele De Carli: And at the same time, the smaller pressure dropout will lead also to a lower loss, okay? So usually…
36:20:310Michele De Carli: Air velocity.
36:21:950Michele De Carli: Okay, air velocity, pressure drop, and noise level, they are located together. If you want to have a greater velocity.
36:29:360Michele De Carli: You will have a greater pressure drop, and you will have… so, a greater noise generated by the atom.
36:35:490Michele De Carli: Okay, so…
36:36:680Michele De Carli: The air turning other devices should be considered as a compromise between a suitable matter in order to avoid costs, but at the same time to try to avoid them.
36:48:40Michele De Carli: Noise, okay, it depends also on the noise level that you will keep reminder, because sometimes if it's an open office, okay, then you might have some background noise, which you would anyway have, okay? So in that case, you could keep the noise level a little bit higher than
37:07:350Michele De Carli: Then, for instance, in a conference room, okay, or… Okay?
37:15:780Michele De Carli: All right, so that's all for the… for this part, okay? And now we are going… I will show you a little bit
37:25:880Michele De Carli: Okay, the… how to size the system overall, okay, and then we come back to the… we are going to, let's say, go more in detail on the… on this part of the… of the…
37:40:950Michele De Carli: of them…
37:43:50Michele De Carli: Of the course, when we are going to see how to do the examples and get to the rep…
37:48:670Michele De Carli: Questions?
37:54:430Michele De Carli: Christian, yeah, that's kind of good.