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A comment on Bitcoin mining heats homes for free in Siberia [video]. Parent comment

Re:Bitcoin mining heats homes for free in Siberia [video] by maxerickson on Friday November 03, 2017 @01:32PM (#15620841)
Your link is for Peltier coolers.

This government study of an air source heat pump maintained a real world COP of ~3 in Connecticut:

https://www.nrel.gov/docs/fy13osti/56393.pdf

It would be pretty bad to design a heat pump that dropped much below 1, better to just install a big resistive element.

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Re:Bitcoin mining heats homes for free in Siberia [video] by DINKDINK on Sunday November 05, 2017 @02:23PM (#15631060)
Cool data. Appears the CoP vs outdoor temp plots are on page 14. Since the data doesn't provide temperature delta between the source and sink, you'd need to assume that the pump met the heat delivery requirements.
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