5 ms·
On principle, yes. There are quirks - the COP is different for lower temperatures, and becomes 1:1 at around 5F (-15C). So preheating the air could improve the
by shoo_pl 6y ago
On principle, yes. There are quirks - the COP is different for lower temperatures, and becomes 1:1 at around 5F (-15C). So preheating the air could improve the effectiveness at low temperatures, and I am guessing it might look like this:
- before: 1kWh in, 1kWh out
- after: 1.9kWh in, > 1.9kWh out
However, if it was that simple, I suppose heat pump manufactures would include a pre-heating as built-in feature.
It's very likely that he reduced the energy consumption of heat pump by 50%, but at the same time he uses more than those 50% for mining and has a negative total result that is being offset by the profit from mining itself. Which probably nice for him, but not really for environment :)
- throw0101a 6y ago> There are quirks - the COP is different for lower temperatures, and becomes 1:1 at around 5F (-15C). It depends on the unit. Some (Mitsubishi FE12NA) have a COP of 1.75 even at -10F / -20C. See Table 6: * https://www.nrel.gov/docs/fy11osti/52175.pdf https://www.nrel.gov/docs/fy11osti/52175.pdf
- cgufus 6y agoThe used coolant mainly infleunces these numbers. check chart on: https://www.researchgate.net/figure/Coefficient-of-performance-COP-versus-evaporating-temperature-at-condensing-temperature_fig6_264859123 https://www.researchgate.net/figure/Coefficient-of-performan...