Guru
Joined: 07/07/2008
Location: AustraliaPosts: 423
| Posted: 12:06am 27 Dec 2020 |
^ that's it.
Some time ago I was thinking of a heat storage system based on this concept.
The assumption was that heating and cooling were the biggest power hungry appliances in a home.
Solution being a 5000L insulated tank that could be heated or cooled with a heat pump running directly from solar. No pesky batteries.
Then at night, a small heat pump, with heat exchanger inside the 5000l tank could run a split system to recover the heat in a very efficient way. Or if enough delta T, just pump the water through radiators in the building. It could work for cooling too.