Hello everyone,
I have a question about the system offered by Schwörerhaus (also described on their website):
As I understand it, air is extracted from the kitchen, bathroom, and toilet, and fresh air, warmed by the exhaust air and heating wires, is supplied to the living room and bedroom.
Warm air comes from above.
Does it really work that the kitchen and bathroom still stay warm in winter? Apparently, no warm air is supplied there, at least not directly.
I actually thought it would be best if warm air were supplied from below, since cold air tends to stay near the floor.
Is the overall air circulation effective enough for this to work?
Overall, the system seems to use only air-to-air heat exchange combined with electric heating (to cover the remaining heating demand after the heat exchanger). Would it be possible to significantly reduce the electricity consumption by adding a groundwater heat pump, or is that no longer worthwhile in these areas?
Is this system a sort of standard, or do other passive houses use completely different methods?
Thank you
insgruene
I have a question about the system offered by Schwörerhaus (also described on their website):
As I understand it, air is extracted from the kitchen, bathroom, and toilet, and fresh air, warmed by the exhaust air and heating wires, is supplied to the living room and bedroom.
Warm air comes from above.
Does it really work that the kitchen and bathroom still stay warm in winter? Apparently, no warm air is supplied there, at least not directly.
I actually thought it would be best if warm air were supplied from below, since cold air tends to stay near the floor.
Is the overall air circulation effective enough for this to work?
Overall, the system seems to use only air-to-air heat exchange combined with electric heating (to cover the remaining heating demand after the heat exchanger). Would it be possible to significantly reduce the electricity consumption by adding a groundwater heat pump, or is that no longer worthwhile in these areas?
Is this system a sort of standard, or do other passive houses use completely different methods?
Thank you
insgruene
I
insgruene4 Oct 2010 20:05Hmm, I don’t quite understand this now.
To me, a combination of a heat pump and solar collectors is much more energy-efficient than having to use electric heating as a backup.
So, I’m not really sure I follow your comment?
To me, a combination of a heat pump and solar collectors is much more energy-efficient than having to use electric heating as a backup.
So, I’m not really sure I follow your comment?
Hello,
In principle, that is correct, but:
- A passive house partly relies on internal and solar gains
- Due to the (expensive) building structure, the heating energy demand is extremely low
So why invest in an additional quite expensive heat pump for a heating energy demand of maybe 2000 kWh/year?
However, hot water production should not be forgotten. Depending on how high the demand for this is, a heat pump could become worthwhile overall. Whether a hot water heat pump is the best choice in general would need to be clarified.
Best regards
insgruene schrieb:
...For me, a combination of a heat pump and solar collectors makes much more sense energetically than having to use electric heating.
In principle, that is correct, but:
- A passive house partly relies on internal and solar gains
- Due to the (expensive) building structure, the heating energy demand is extremely low
So why invest in an additional quite expensive heat pump for a heating energy demand of maybe 2000 kWh/year?
However, hot water production should not be forgotten. Depending on how high the demand for this is, a heat pump could become worthwhile overall. Whether a hot water heat pump is the best choice in general would need to be clarified.
Best regards
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