Quote:
Originally Posted by mysocal911
Always good to do some basic calculations:
1. Typical A/C compressor power demand - 4 hp = 3,000 watts
2. Typical battery/alternator current; 3,000 / 12 = 250 amps, which results in R* I^2 losses in the wiring most don't consider.
The alternator's current output at near idle RPM needs to support over 100-150 amps for acceptable A/C performance, e.g. @ traffic light.
Converting to a DC compressor @ 12V laughable! |
And yet it still blows cold air in my porsche. Weird huh? Must be some kind of dark magic happening in there.