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German startup advancing compressor-free electrocaloric heat pump technology (www.pv-magazine.com)
submitted 3 months ago* by to c/climate@slrpnk.net
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[–] 15 points 3 months ago (2 children)

Neat.

A four-stage cascade has already demonstrated 2 W of cooling power over a 2 Kelvin temperature lift.

Well, they’ve got a long way to go to manage 20-40° temperature lift needed to replace a cold climate heat pump.

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  • [–] 16 points 3 months ago (1 child)

    By connecting multiple stages in series, each separated by one-way pressure valves, larger temperature lifts can be achieved. “This allows us to bridge temperature differences of several degrees, for example from 5 C up to 40 C in typical applications,” Vogel said.

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  • [–] 11 points 3 months ago

    Yes, I read that part too.

    20 segments, targeting a 20 Kelvin temperature span and approximately 100 W of cooling capacity.

    100w is still a very long way to go in scaling to 1-10 kw. Hopefully it scales; always good to have increasing efficiency in climate control when our planet is warming

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