ᐅ Why is shading especially important in newly constructed houses?
Created on: 29 Aug 2016 13:33
G
Grym
It is often argued that shading is especially important in new builds to prevent overheating in summer. But why is that exactly?
The insulation in a new building works both ways. Whether it’s cold or heat, the house takes much longer to adopt the outside temperature compared to an older house with poorer insulation.
Now, regarding the windows themselves. Shouldn’t solar energy pass through a less effective double-glazed window faster than through a modern triple-glazed window?
Why do many say that shading is PARTICULARLY important in new builds during summer? I would rather think the opposite: a new build is better insulated against heat from outside. Triple-glazed windows with a low U-value keep heat out better than old double-glazed windows.
The insulation in a new building works both ways. Whether it’s cold or heat, the house takes much longer to adopt the outside temperature compared to an older house with poorer insulation.
Now, regarding the windows themselves. Shouldn’t solar energy pass through a less effective double-glazed window faster than through a modern triple-glazed window?
Why do many say that shading is PARTICULARLY important in new builds during summer? I would rather think the opposite: a new build is better insulated against heat from outside. Triple-glazed windows with a low U-value keep heat out better than old double-glazed windows.
S
Sebastian7930 Aug 2016 13:15Yours has a constant volume flow control – unfortunately, mine doesn’t, which makes balancing easier. However, mine is much less sensitive to changes in the house. MyCraft will know what I mean .
Phew, I’m out for now.
We have been offered the Brötje LivingAir LAK450L for an additional cost.
In the specification drawing, I see a bypass damper, heat exchanger, and electric preheating coil. But whether it can also “cool” in reverse or if it is approved by building authorities? No idea.
The offer mentions functions like “free heating, free cooling, night cooling in summer.” The unit also has an input for a differential pressure switch (which we need because a stove will be installed in the living room).
Maybe “free cooling” means the reverse flow through the heat exchanger, and night cooling is the flow bypassing the heat exchanger.
It also states: DIBt approval in preparation. So, it sounds like individual approval is still required.
We have been offered the Brötje LivingAir LAK450L for an additional cost.
In the specification drawing, I see a bypass damper, heat exchanger, and electric preheating coil. But whether it can also “cool” in reverse or if it is approved by building authorities? No idea.
The offer mentions functions like “free heating, free cooling, night cooling in summer.” The unit also has an input for a differential pressure switch (which we need because a stove will be installed in the living room).
Maybe “free cooling” means the reverse flow through the heat exchanger, and night cooling is the flow bypassing the heat exchanger.
It also states: DIBt approval in preparation. So, it sounds like individual approval is still required.
S
Sebastian7930 Aug 2016 13:40You are from NRW, right? Hopefully, you have applied for the progres subsidy. Then you will need this DiBT approval...
No – I haven’t heard of that either. As the standard unit, we were offered a Vallox system, which is supposedly subsidized with 1,000 EUR. However, since it can’t preheat initially and doesn’t have a connection for the differential pressure switch, we decided to focus on the Brötje system. According to the installer, however, there is no subsidy available for that.
What you’re saying sounds like there might be a general subsidy for controlled residential ventilation in NRW. I’ll look into that now. We can also discuss details via private message before we drift off-topic here. The question would be if the subsidy amount is greater than the approval costs. And why the installer wouldn’t know about something like that…
What you’re saying sounds like there might be a general subsidy for controlled residential ventilation in NRW. I’ll look into that now. We can also discuss details via private message before we drift off-topic here. The question would be if the subsidy amount is greater than the approval costs. And why the installer wouldn’t know about something like that…
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