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Has anyone combined an air source heat pump with a heat recovery system using the exhaust pipe from the recovery unit being blown out infront of the intake fan in the heat pump. According to some manufacturers the pumps air intake of 1000cub meters an hour and the exhaust from the recovery at 180cub meters with a temp of 8 degrees would hopefully make the pump run more efficent in the winter. Any thoughts on this please.
Thanks
Phil
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The vast majority of these are used for air cooling so then this is exactly what you don't want to do. For heating use it would be good but then a switched over duct would be needed increacing size and cost.
The bigger question is why aren't more of these used for heating!
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Hi there, I have one of these Heatpumps in my House in Poland, I've got now for 5 years and I think it's one of best heating systems on the market. It is very energy efficient and runs at low costs even with our cold weather during winter times (-20 degree). This is Scandinavian technology and is developed mainly for there own markets. I personally know, that there are plenty of this heatpumps used in Germany.
The size is 60 x 60 x 210 cm, it has a 170l hot water tank plus a seperate 40l water tank for the heating of Radiators. There are now even better models on the market as technology goes on....
I run ours on electriciety, but you can also run them on Gas or Oil.
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Thanks for the reply Tony.
I don’t understand, I was talking about using the air source heat pump to heat the underfloor heating, let the heat rise going into the heat recovery ventilation system as the recovery unit on average only recovers 70 to 85 percent leaving the rest to be wasted and blown out to the outside. I was thinking of bringing this waste steal air down a standard 4" insulated ducting used in the rest of the system down the inner leaf of the house and out infront of the heat pump outside. This will heat the intake air going into the heat pump hopefully letting the pump work more efficient when temperatures are low. Sorry if you have already answered this.
Thanks
Phil
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This recent post http://www.greenbuildingforum.co.uk/forum/index2.php?DATEIN=tpc_yeqshurxq_1163456044&showpage=2
was about feeding waste heat outputs into heat-recovery ventilation systems and I wondered about integrating the hrv with a heat pump, so the heat exchanger part of the hrv instead of being passive would be refrigerated, so capable of recovering waste latent heat by condensing moisture out of the outgoing air. Someone said that their hrv would do condensation but I can't find that post.
It wouldn't be much use just discharging the hrv exhaust near the inlet of a heat pump - the circle needs to be closed better than that.
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Has anyone got an idea on how to close this cycle without interfearing with the air supply needed for the heat pump?
Thanks Phil
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