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Yes. There are heat pumps capable of producing steam up to 200C. They are meant for industrial applications, and I think they're a relatively new development so
by jabl 4y ago
Yes. There are heat pumps capable of producing steam up to 200C. They are meant for industrial applications, and I think they're a relatively new development so not much used yet.
- burmanm 4y agoThe efficiency goes down significantly with those temperatures, given that most sources of waste heat are low-temperature (such as datacenter heating water, waste water, etc - places where it makes economically and ecologically sane to extract heat). That's the problem even in district heating where temps are ~115C (like in Helsinki). Sadly, reducing the temperature is not an easy task, since many buildings have heating systems designed for higher temps. Even lowering those temps to 80C would improve efficiency of the heat pumps a lot. But it's a big project to get it done and will most likely take a decade or more.