3 ms·
Heat pump with outside temperatures below zero has same or lower efficiency than resistive heating.
by tigershark 8y ago
Heat pump with outside temperatures below zero has same or lower efficiency than resistive heating.
- Faaak 8y agoI suppose the cars heats resistively below zero, and with a heat pump above
- g8oz 8y agoA modern heat pump with a variable speed compressor can be more efficient than resistive heat down to about -25 degrees Celsius (-13F). See Mitsubishi's Mr. Slim series. http://cdn.agilitycms.com/mesca/productdownloads/mem-201806-e-p-series.pdf http://cdn.agilitycms.com/mesca/productdownloads/mem-201806-... (page 13)
- tigershark 8y agoAnd if you use a ground source heat pump (that has to be interred) it would be even more efficient. So? I don’t think that you can put either of them in a car...
- g8oz 8y agoThe offerings from Mitsubishi and similar ones from other Asian manufacturers like LG and Fujitsu are air source heat pumps. I see no reason why the tech can't be scaled down to fit a car. It's certainly a reasonable goal for auto parts suppliers to aim at.