ASHP - using a low loss header and modulation instead of a buffer

[SteamyTea]

18 minutes ago, jack said:

True for high humidity at low temperatures, but when it's mild I assume higher humidity also means additional efficiency due to energy gained from condensation of water vapour.

 

Presumably there's also energy extracted from the phase change to ice, but that's more than balanced out by the corresponding need to defrost.

Yes, I think so.

Would need to do some data collection to find out.  Often thought that a couple of DHT22s either side of the fan/heat exchanger on an ASHP should be able to collect enough data.

Was going to do it on a work mates ASHP but he moved house.