|
You have an OE compressor lying around. That's going to outperform a 12V system, plain and simple. Alternator at 50% efficiency * 12VDC A/C motor at 70% efficiency draws three times the power of the belt-driven arrangement.
But to address the problem you posed, I can think of two smartass solutions:
One, find a large enough 12V motor, and attach its shaft right to the shaft of your factory A/C compressor. Mount the assembly anywhere in the car, but preferably close to the alternator. Attach the factory A/C clutch switch to a solenoid that drives the 12V motor.
Two, find a home window A/C unit with relatively low amperage draw. Hack it apart and mount it anywhere in the car. Plug it in to a large inverter. Install a cooling fan on the inverter.
Either way, you'll need an alternator upgrade.
|