6 ms·
Sorta like saying house with solar panels is over 100% efficient, technically true when measured against grid input. A air source heat pump is a solar assisted
by SigmundA 5y ago
Sorta like saying house with solar panels is over 100% efficient, technically true when measured against grid input. A air source heat pump is a solar assisted heating device pulling thermal energy from outside air (which is heated by the sun) into your home using electricity to gather it and move it inside. Heats pumps combined with solar panels is a a great combo BTW.
Efficiency is always measured relative to something and cannot be over 100% in a closed system, heat pumps are not a closed system so no laws of physics are broken.
- hedora 5y agoYeah, but heat out / electricity in is 5, but for an ideal (perfectly efficient) electric heater, is is only one. It's one of those sufficiently advanced technologies that seems like magic. Like, what if we powered a sufficiently efficient sterling engine with it, and used that to spin the compressor and fans? It's not obvious that it isn't a perpetual motion machine or some commercially available version of Maxwell's demon or something.