Re: Air conditioning question, more

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <3.0.3.16.19990711122817.2397d89c@n-jcenter.com> Mike Arman writes:

> At 746 watts = 1 HP, that's 3,730 watts, so lets use 4KW instead. As Avi
> pointed out, 4,000 watts at 13 volts is 307 amps - not practical, and
> that's why I proposed to use an alternator wired to produce 110 volts -
> 4,000 watts is then 36 amps; still a lot, but now we are in the manageable
> range. And it DOES get more complicated - the motor in the sealed
> compressor wants to see 60 cycles per second, whereas the output frequency
> of an unrectified alternator varies in direct lock-step with engine revs .
> . . so we may wind up with a rectifier and a 5 HP DC motor - heavy! and
> expensive!

What about the aircraft market?  Anything in the low-end commuter models?

In any case - what about the concept of detected WOT disabling the
compressor?  I'm _sure_ some models do it.

--
 Phil Payne
 UK Audi quattro Owners Club
 Phone: 0385 302803   Fax: 0870 0883933