In an interesting way, the reverse is also here: some district heating plants use heat pumps to extract waste heat from sewage to provide efficient heat for district heating systems.
I dream of a future where there's an efficient energy recapture in the house. We waste a lot of heat in the shower, and washing clothes and dishes. We also run the fridge all winter when it's less than 5C outside, and the fridge then produces a lot of heat. And when we're done cooking, the oven is still really hot. Could the home heating system of the future use all this heat (and cold) more efficiently?
WJW|6 months ago
See https://www.eneco.nl/en/about-us/what-we-do/sustainable-reso... for a basic overview.
lopis|6 months ago