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00:01:780Michele De Carli: Now we start with the…
00:07:740Michele De Carli: Air quality. Yes, please. Just a question about Nicole. We don't see a URF system, no.
00:16:690Michele De Carli: No, because there is almost nothing to decide there.
00:19:960Michele De Carli: We… I'm… we will talk about that, but not in the lead.
00:23:460Michele De Carli: Right? No.
00:25:560Michele De Carli: But are you… are you… Interesting. Yeah, okay. Yeah, but we will talk about that. Anyway, the F is not really…
00:33:750Michele De Carli: But from the design point of view, it's not really requiring too much effort, okay? And also, it is usually that you are…
00:43:740Michele De Carli: you… You are leaving the design almost to the…
00:51:600Michele De Carli: Production, company, okay, to the, to the product company.
00:56:730Michele De Carli: Because, yeah, they are, like,
01:01:340Michele De Carli: box. Okay, so now here we will talk about maybe hydraulic system and air ventilations. So, we just mentioned, but very quick
01:10:120Michele De Carli: Good year.
01:11:740Michele De Carli: So, VRF is the… is… you don't know it, but, I mean, VRF or VRV, okay, is the…
01:18:160Michele De Carli: the direct expansion systems, which can be used, or are used, okay, very widely. So it's basically your air conditioning system, but with many
01:29:650Michele De Carli: Inner or internal units, okay?
01:34:360Michele De Carli: Okay, the… so, let's look at the indoor air quality, and of course, regulation criteria. Okay, so…
01:49:10Michele De Carli: So… If, it works… Okay?
01:53:620Michele De Carli: So, let's resume a little bit what we have said in the…
01:59:450Michele De Carli: at the beginning of the course, and also at the beginning of thermalcol. So, when we talk about the environmental quality, we have to consider all these parameters, okay?
02:09:850Michele De Carli: And what is important to understand is that we need to provide a health, or healthy, comfortable space where people could have good property.
02:23:60Michele De Carli: Okay? Productivity is important, as we will see.
02:27:330Michele De Carli: So, remember that there are three main, let's say, concepts. One is growth, but we have seen it. The other one is health, okay, healthy greetings, and the other one is the productivity of people, okay, because
02:42:610Michele De Carli: Of course, that piece really is all done as we wish.
02:46:760Michele De Carli: Now, what I want to mention is that this is the European directive, or could be directive, yeah?
02:57:980Michele De Carli: the performance with the data. Okay, so the… in the first article, okay.
03:04:620Michele De Carli: I want to highlight that we are requesting, okay, by,
03:11:980Michele De Carli: Increasing the energy performance of buildings, okay.
03:16:800Michele De Carli: Considering the outer climatic conditions, local conditions, so it means how you build the buildings and the local, let's say, rules, okay?
03:28:490Michele De Carli: As well as, okay, indoor climate requirements, and cost-effective.
03:33:300Michele De Carli: Okay, so we have to improve. We have to increase advanced efficiency, and we have to decrease the…
03:40:10Michele De Carli: primary energy needs, but we need to consider the cost, and we need to make cost-benefit analysis. And also, we should not, okay, do it by…
03:54:440Michele De Carli: Decreasing the quality of the indoor crowd.
03:59:630Michele De Carli: Now, why is the indoor carriage important, okay? Well, because…
04:08:260Michele De Carli: today, or let's say since about 30 years, okay, people… people, they spend more than 90% of… so we are spending more than 90% of our life indoct.
04:22:19Michele De Carli: So, on average, we spend,
04:25:460Michele De Carli: More than half allowed in a weekly mobile house, 24% home hour.
04:31:980Michele De Carli: Life is in work.
04:36:40Michele De Carli: We are talking about the integral of Elisha, okay?
04:41:290Michele De Carli: 6% of our life we spend in travel, so in bus or whatever.
04:47:280Michele De Carli: 5% in public premises, okay?
04:51:290Michele De Carli: Cinemas, disco, pops.
04:53:850Michele De Carli: Okay, but shops, supermarkets, and so on, okay?
04:57:890Michele De Carli: And, 10% output. Okay, so…
05:02:420Michele De Carli: This is how we share our time over the lifespan.
05:07:210Michele De Carli: No.
05:09:610Michele De Carli: I would like to mention that,
05:12:670Michele De Carli: When you consider one day of your life.
05:16:460Michele De Carli: you're intaking 1KG of food, and you're pretty interested in knowing where this food comes from, okay? So you're… you are quite sure what the quality of the food is when you buy it.
05:29:850Michele De Carli: 2 liters of liquid, 2 kilograms of liquid, but you don't…
05:34:940Michele De Carli: Expect to breathe 15 kilograms of air.
05:39:70Michele De Carli: And so you breathe, 7 times 8 times the water that you drink.
05:45:650Michele De Carli: And, as mass, and 15 times the food that you eat.
05:51:330Michele De Carli: Do you care about the quality of the air that you're breathing?
05:55:550Michele De Carli: Okay?
05:57:160Michele De Carli: Now, if you spread out these 15 kilograms, okay, if we spread this mass, okay, and we consider food and liquids, you can see that about 46% of this kilogram, or let's say, of the intake mass is
06:15:110Michele De Carli: It's just described of this particular kind of taken in Australia, okay?
06:22:260Michele De Carli: But another issue, which is, I mean, cued, make it.
06:27:960Michele De Carli: Or stress, the importance of the air, is that you can survive for weeks if you don't…
06:33:650Michele De Carli: Eat, you survive for days if you don't drink.
06:38:590Michele De Carli: I think you should ride just for a few minutes.
06:41:640Michele De Carli: If you don't breathe.
06:43:360Michele De Carli: Okay?
06:44:620Michele De Carli: So… Here, I want just to emphasize that, air
06:50:780Michele De Carli: Breathing, air quality is extremely important, okay? It… we knew that, and we stressed this point when we had the COVID.
06:59:440Michele De Carli: Pandemic?
07:01:150Michele De Carli: But today, okay, we… again, okay.
07:05:180Michele De Carli: We… the… the tension is, again, okay.
07:09:730Michele De Carli: A goodie, though.
07:12:120Michele De Carli: Now, I want just to make you another, okay?
07:17:490Michele De Carli: I want just to make you thinking.
07:21:740Michele De Carli: A service company, where you should probably work, okay?
07:26:510Michele De Carli: In a service company, okay.
07:29:930Michele De Carli: This is the sharing of events, sharing of the costs. Okay, so you can see that the… most of the cost is there
07:39:570Michele De Carli: personal cost, okay? So, people, okay? So, if you… the way you work, the time that you work in a company, this is the major, okay, part of the cost of the cost.
07:52:370Michele De Carli: Then you have maintenance and financing, and the energy is just numbers.
07:59:400Michele De Carli: What I want to make… what I want to say with this, Paul, I want to say that, usually in office buildings, okay, people are not
08:11:320Michele De Carli: Based on, usually, they did not care, okay?
08:17:870Michele De Carli: companies, they didn't care about the company conditions, so…
08:23:100Michele De Carli: the investing in a HVAC, which could provide comfortability and so on, was just, I mean, And…
08:36:740Michele De Carli: Money, okay, which… thrown away, okay? But…
08:42:190Michele De Carli: If, with the heating, irrigation, and air conditioning system.
08:46:820Michele De Carli: And in a comfortable space, in a healthy place.
08:50:550Michele De Carli: If you increase, say, by 5 or 10%,
08:54:940Michele De Carli: The productivity of your people, of your… on the other.
09:00:980Michele De Carli: All the people, okay?
09:02:980Michele De Carli: Okay, by increasing, for research.
09:08:760Michele De Carli: 20% of energy cost, or by increasing the resting cost of the HVAC, okay, you can see that
09:15:400Michele De Carli: the effect is limited, okay? I'm not saying that we need… that the energy performance is not important. I'm not saying that we need… that we… we have to, so energy is still relevant, but the indoor contact and indoor parameter are much more relevant.
09:33:700Michele De Carli: Okay? Or could be much more.
09:35:680Michele De Carli: Okay?
09:37:130Michele De Carli: So, this is just to… okay, these are just, let's say, a few comments that I hope you will get in mind, and you will understand.
09:47:930Michele De Carli: Now, what about the…
09:51:550Michele De Carli: indoor air quality, okay, so we'll talk about indirect quality, okay, so we made a kind of introduction. Now we'll talk about indirect. So, indirect quality is, let's say.
10:05:650Michele De Carli: should consider different, okay, different topics. One topic is to have healthy breathing, okay? So, to link, okay, some problems which might affect our health, okay?
10:24:410Michele De Carli: And on the other side, it should, okay, improve, or should maintain, or guarantee the cop, okay?
10:33:420Michele De Carli: So… Just to, just to say that we might have some problems, okay, in buildings, and of course.
10:43:680Michele De Carli: they… Quality of the air, which means enough air quality, enough air in the room, or
10:51:30Michele De Carli: a proper, okay, filtering of the air and so on, it's very simple.
11:01:200Michele De Carli: I… I don't know if you have ever heard about that, okay? This is the most extreme, okay, or worst condition that you might have.
11:11:200Michele De Carli: It's called sick building syndrome, so usually there might be buildings where you can, okay, demonstrate that the indoor environment is affecting, okay, the
11:23:490Michele De Carli: the health of the people and, and the corporate, okay? Usually, healthy buildings are buildings where you might have, people, with dry eyes or, coughing, okay? So, fatigue, okay, nausea, and so on. Sometimes, okay, that might be
11:43:990Michele De Carli: problems, okay, on absence, okay, on Tuesday. So, people come back on Monday, okay, they get sick, and Tuesday, okay, they, they are staying home, okay? So there are several problems, for buildings. So, again, the indoor environmental quality.
12:02:460Michele De Carli: It is a huge problem, it's really a big problem. So we need to, let's say, on one hand, to
12:10:400Michele De Carli: size the buildings and size the ventilation system properly, okay? On the other side, we need to keep the, the building clean and comfortable, okay?
12:23:820Michele De Carli: Now, this is the last, slide for today. Resuming, okay, degradation is…
12:35:490Michele De Carli: necessary, and is important. So, what is the information?
12:41:400Michele De Carli: So, the financial is… Supplant outdoor air.
12:46:510Michele De Carli: to or remove an indoor air from a dwelling in order to control the pollutant humidity or temperature. This is the Asher 62.
12:56:230Michele De Carli: ASHRA assisting tool is one of the few standards dealing with air quality. It's the most complete standard for radiation, okay?
13:05:350Michele De Carli: And in this case, ventilation means that you are Either introducing outdoor air, Supply, okay, mechanically, okay?
13:19:580Michele De Carli: And ranging, okay, mechanically, the air, okay, could be also natural, but it is not just opening and closing windows, which is called usually airing, okay, it's not vintage.
13:33:170Michele De Carli: Let's say that we mainly talk about ventilation, okay, when we talk about the
13:41:30Michele De Carli: the movement, or so the auxiliary system, so the fun, which is driving the air from outside to inside, and or removing the air from inside to outside, okay?
13:56:320Michele De Carli: Okay.
13:59:120Michele De Carli: Good.
14:03:240Michele De Carli: Okay, we can come back to this point tomorrow, okay?
14:09:350Michele De Carli: Not tomorrow, no.
14:11:70Michele De Carli: Tuesday.
14:12:80Michele De Carli: Okay, Tuesday, I don't know exactly the rules, so please go on the Portale, and so on, and check where the… I don't know if we are still in Paolotti, or if we are moving to that. No, no, no, just from the first to the second week.
14:29:280Michele De Carli: Dave?