3 ms·
Wikipedia says 3kW https://en.wikipedia.org/wiki/Automobile_air_conditioning#Power_consumption https://en.wikipedia.org/wiki/Automobile_air_conditioning#Po...
by redwall_hp 7y ago
Wikipedia says 3kW https://en.wikipedia.org/wiki/Automobile_air_conditioning#Power_consumption https://en.wikipedia.org/wiki/Automobile_air_conditioning#Po...
It also says that the most efficient photovoltaics yield 175W per square meter. (Though I've seen figures as high as 200W.) https://en.wikipedia.org/wiki/Solar_panel#Efficiencies https://en.wikipedia.org/wiki/Solar_panel#Efficiencies
- hwillis 7y agoThat's for a belt-driven A/C, tied directly to the engine RPM. They're inherently much less efficient because they have to work over a wide range of speeds. A motor-driven A/C will be 1-2 kW. That's also the peak power, and a motorized A/C will instead be turned on and off leading to a much lower power draw that also depends less on the peak power. Typically a 50-30% duty cycle, so 200-300 watts very roughly. More depending on the insulation, sun, and outside temperature.
- robocat 7y agoAnd if instead of getting into a sweltering 330K car, if 300W was enough power to cool it to a reasonable 300K, that's still a win. Happy to start car to cool it down to a comfier 295K.
- WrtCdEvrydy 7y agoThis man is using Kelvin... why do you use Kelvin?
- agumonkey 7y agoyeah forget it, 3kW is small house scale the best bet with solar panel AC... is to cover all windows with them so sunlight doesn't heat the inside of the car when parked. :cough: