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Subject:A/C compressor Power usage
From:Ezra Hall
Date:Tue, 18 Apr 2000 15:41:14 -500

Folks,
 We are planning a 3 week x-country camping trip this summer. Although we will
not be camping with access to power most of the time, it would be nice to have
the option of A/C at night if it is really hot out.

  Not wanting to lug around a household A/C unit or install an oversize R/V
unit, I thought, why not use the existing refrigerant loop?

  - Add second clutch to Compressor with belt to A/C motor
    (or some other means to power the compressor off
     another source)
  - Add control electronics
    - Interior Air temp sense
    - Evaporator fan control (interior fan)
    - Temp sense of Condensor and Fan speed control to
      reduce noise emissions
    - Control of A/C motor
    - Safety sense (Low press. sensor,etc..)
    - battery charger to maintain charge with all the
      12V fans running
    - etc..

Questions:
    - How much power does the A/C compressor use?
    - What is the most efficient speed (RPM) for
      compressor operation?

Just an idea.... Opinions?
Thanks,
 Ezra
'88 Westy
'86 944