2 ms·
I wonder if a larger central version of this would be better? Overall heat loss would be lower, it could be an easier upgrade for homes with radiators, and cou
by benj111 4y ago
I wonder if a larger central version of this would be better?
Overall heat loss would be lower, it could be an easier upgrade for homes with radiators, and could also serve hot water, at a wider range of temps than a normal tank type water heater.
- walterbell 4y agoThis central version can store heat for months, https://www.bbc.com/news/science-environment-61996520 https://www.bbc.com/news/science-environment-61996520 > The device has been installed in the Vatajankoski power plant which runs the district heating system for the area. Low-cost electricity warms the sand up to 500C by resistive heating.. generates hot air which is circulated in the sand by means of a heat exchanger. Sand is a very effective medium for storing heat.. device could keep sand at 500C for several months. So when energy prices are higher, the [sand] battery discharges the hot air which warms water for the district heating system which is then pumped around homes, offices and even the local swimming pool.