ᐅ Location of the mechanical ventilation system with heat recovery in the underground basement?
Created on: 7 Feb 2012 08:42
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wadi1982
Hello everyone,
We are getting a controlled mechanical ventilation system with heat recovery.
For reference: The house has a footprint of about 130m² (1400 sq ft) and a living area of approximately 115m² (1238 sq ft).
We have just received the first plan from the architect.
Originally, the ventilation system was planned to be installed in the basement.
However, we now have the (fortunate?!?!?) situation that our plot is almost level.
This means the basement will be completely underground.
Because of this, the architect has revised the plan so that the ventilation unit will be located in the utility room.
Reason: The system needs a way to draw in and exhaust air. If we still wanted the ventilation unit in the basement, we’d either have to dig out a corner (which we want to avoid) or install so-called ventilation towers (= extra cost, and from what I found, they don’t look nice).
Now I have the following questions, hoping someone here can help me:
1. Could you simply run the two ducts (supply and exhaust air) in the basement to the outside and install a light well (window well) at that spot (of course without a basement window)? Then the supply and exhaust could be placed inside the light well, which I think wouldn’t look too bad. Or do the supply and exhaust ducts have to maintain a certain distance from each other?
2. If point 1 isn’t possible, could the ventilation unit be installed in the basement directly below the utility room? The supply and exhaust ducts would then run through the floor of the utility room into the basement and be vented to the outside in the utility room (hope that makes sense). That way, the openings would be placed higher.
3. If neither of these options work, how loud is such a system usually for a house this size? Would it be disturbing in everyday life?
Thanks in advance for your opinions!
We are getting a controlled mechanical ventilation system with heat recovery.
For reference: The house has a footprint of about 130m² (1400 sq ft) and a living area of approximately 115m² (1238 sq ft).
We have just received the first plan from the architect.
Originally, the ventilation system was planned to be installed in the basement.
However, we now have the (fortunate?!?!?) situation that our plot is almost level.
This means the basement will be completely underground.
Because of this, the architect has revised the plan so that the ventilation unit will be located in the utility room.
Reason: The system needs a way to draw in and exhaust air. If we still wanted the ventilation unit in the basement, we’d either have to dig out a corner (which we want to avoid) or install so-called ventilation towers (= extra cost, and from what I found, they don’t look nice).
Now I have the following questions, hoping someone here can help me:
1. Could you simply run the two ducts (supply and exhaust air) in the basement to the outside and install a light well (window well) at that spot (of course without a basement window)? Then the supply and exhaust could be placed inside the light well, which I think wouldn’t look too bad. Or do the supply and exhaust ducts have to maintain a certain distance from each other?
2. If point 1 isn’t possible, could the ventilation unit be installed in the basement directly below the utility room? The supply and exhaust ducts would then run through the floor of the utility room into the basement and be vented to the outside in the utility room (hope that makes sense). That way, the openings would be placed higher.
3. If neither of these options work, how loud is such a system usually for a house this size? Would it be disturbing in everyday life?
Thanks in advance for your opinions!
P
perlenmann7 Feb 2012 14:22I'm not entirely sure about this... Since I decided on my system only after the shell was completed, it is located in the attic. But if it is going to be installed in the basement, wouldn't it make sense to integrate a ground heat exchanger? That way, you have the system in the basement and don’t have to go upstairs and then outside?!
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perlenmann7 Feb 2012 15:45wadi1982 schrieb:
@Perlenmann: Whether that is really the case, I don’t know. But since we decided on a gas boiler, it is not really an issue at the moment.I’m not talking about a ground source heat pump, but rather a ground heat exchanger for the supply air of the mechanical ventilation system with heat recovery. This way, you get cooler air in summer and warmer air in winter. Furthermore, this should also solve the problem of light wells being used as supply and exhaust air inlets.
wadi1982 schrieb:
...The reliable demand/consumption forecast can only be created, as I understand it, once we have approved the floor plan including the windows, am I wrong? That is absolutely correct! First, the building structure must be defined. Then, the site-specific location and climate conditions as well as the individual user behavior are considered. From this, the expected demand is determined. The parameters of the intended system lead, via the Seasonal Performance Factor (SPF) or annual efficiency, to the consumption (kWh). Together with the specific costs of each energy source (€/kWh), this allows the investment amount (and possibly the financing costs) to be evaluated.Best regards.
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