ᐅ Building a Single-Family Home in North Rhine-Westphalia

Steffen80 schrieb:
I think I confused supply air with exhaust air. Filters are installed where the used air is "extracted." Where fresh air enters the room, there are no filters. That's correct, right?

No, why? It’s more important that the air you breathe is clean when it comes to you. The filter in your kitchen exhaust air is there to prevent grease from building up in the ducts, as if they were baking trays.

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The fresh air filter is actually located inside the unit, not where the fresh air enters the room.

Steffen80 schrieb:
But the supply air filter is inside the unit, not where the supply air flows into the room..

The filter makes the most sense where the airflow pressure is intentionally altered. Placing it at the outlet would cause a bottleneck effect.

In a recirculating unit, it therefore makes the most sense at the end of the intake duct.

But you referred to supply air and exhaust air. "Supply air" actually means air drawn from outside into the system, while "exhaust air" is the air released outside. A recirculating system mainly works with recirculated air. So you probably meant the intake duct when you said "supply air" (?)

In this sense,

Steffen80 schrieb:
I think I confused supply air with exhaust air. Filters are where used air is "sucked out". Where fresh air enters the room, there are no filters. That's right, isn’t it?

is, of course, correct:

in a recirculating system, the filter belongs in the intake duct, and it would be poorly positioned at the outlet.

What you confused, therefore, was "supply air" with "intake" and "exhaust air" with "outlet" — not "supply air" with "exhaust air."

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https://www.linkedin.com/company/bauen-jetzt/

11ant schrieb:


But you were talking about supply air and exhaust air. "Supply air" actually means air brought in from outside into the system, "exhaust air" is the air released to the outside.
.

Hello

No, this is referred to as fresh air and extract air in a mechanical ventilation with heat recovery system.


Olli

Grym schrieb:
Controlled residential ventilation saves 30-50 minutes per day.

How exactly should we understand that? Do you monitor open windows in Saxony? For us, we open a window and then move on, meaning we don’t stay next to it for 30-50 minutes.

Grym schrieb:
I do believe that in a house with controlled residential ventilation, the air quality is significantly cleaner than outside air. The fine dust/diesel/direct injection problem will stay with us for at least another two decades.

I can’t imagine living like that. Never opening the large patio door, not sleeping with windows open in spring or summer. Instead of a normal front door that can sometimes be left open in summer, you have an airlock with a dust protection door... sounds a bit like a laboratory at the Robert Koch Institute? By the way, where is your property located? Next to a highway?

Grym schrieb:
And the exposure to VOCs, formaldehyde, etc. is invisible but present.

I don’t understand that now. If your furniture is off-gassing formaldehyde indoors, how does controlled residential ventilation help you?

Traumfaenger schrieb:
How exactly does this work? Do you monitor open windows in Saxony? Here, we open a window and then move on; we don’t stand next to it for 30-50 minutes.

1. Open 22 windows on two levels, wait 3-5 minutes (3-5 min); close 22 windows
2. Open 22 windows on two levels, wait 3-5 minutes (3-5 min); close 22 windows
3. Open 22 windows on two levels, wait 3-5 minutes (3-5 min); close 22 windows
4. Open 22 windows on two levels, wait 3-5 minutes (3-5 min); close 22 windows
5. Open 22 windows on two levels, wait 3-5 minutes (3-5 min); close 22 windows

I can’t imagine living like that. Never opening the large patio door, not sleeping with windows open in spring or summer. Instead of a normal front door that can sometimes be left open in summer, you get an airlock with a dust protection door.

So far, you haven’t informed yourself about controlled residential ventilation systems. Interesting. Of course, you are always free to open or close windows or patio doors, and you can even install and use an exhaust hood together with the controlled residential ventilation system. You can do everything with the controlled residential ventilation system—you just don’t have to anymore.

You still need to ventilate regularly anyway—much more often than just occasionally opening and closing the front door. As mentioned, 3 to 5 times a day for 10 minutes each time or continuously with the controlled residential ventilation system. While air coming through windows brings pollen, fine dust, and all sorts of pollutants inside, the air from the controlled residential ventilation system is filtered. Of course, air pollution outdoors is not as dangerously unhealthy as in places like Beijing, but fine dust and pollen exposure is widespread across Germany. Naturally, it is higher in urban areas than in a small settlement of about 100 people without industry or traffic within a 10-kilometer (6-mile) radius.

I don’t understand this now.

I know. Please inform yourself. Then it will become clear.