4 ms·
How much energy is 'lost' in the expansion valve in a typical heat pump? Isn't it worth putting a turbine in there to recoup the energy released as a high pres
by londons_explore 3y ago
How much energy is 'lost' in the expansion valve in a typical heat pump?
Isn't it worth putting a turbine in there to recoup the energy released as a high pressure liquid passes through a small hole?
Even if it's only 10%, that's still 10% of the energy use of your home for a decade - surely that pays for a micro turbine (which need not be particularly complex - the same design used in those $3 light up novelty faucets would probably work.).
- doublesocket 3y agoThere are various research projects looking at storing waste heat, often for the purpose of more efficient defrosting. https://www.nature.com/articles/s44172-022-00018-3 https://www.nature.com/articles/s44172-022-00018-3
- Kichererbsen 3y agoI worked for a chair that studied this kind of stuff - your best bet is to figure out how to reduce the temperature lift. Due to the way the Carnot equation works (at least, that's what I _think_ it's called, this is all a while ago), that really get's the heatpump efficiency singing. reduce the heating temperature by increasing the area you're radiating from - floor heating / ceiling heating is way more efficient than radiators since you can deliver the same amount of heat at much lower temperatures to the space.
- Firadeoclus 3y agoPutting fans on radiators should also increase the amount of heat that can be transferred, right?
- joking 3y agoright, you can use low temp radiators or fancoils than are built for this use cases.