Dave,
A couple of the Ultima guys use this one, but is not inexpensive…
MD18 DC Electric 12 Aircon Compressor
Rencool have released their new series DC Voltage Compressor to suit the Automotive market. Rencool manufactures DC Voltage Compressors up to 8Kw @ 24 Volt for Mining, Military and Heavy Construction Industries.www.electricaircon.com
Thanks Howard. I slept through "Heat & Thermodynamics" class.
STOP and go traffic would be a problem but highway speeds or even low continuous speeds would still turn the compressor at an adequate rpm to function. Compressor speeds would need to be something like 1000-3000 RPMs I would think. A 27-inch tire turns about 350 RPMs @30 mph and a little over 1000 RPMs at 90 or so. This seems to indicate a pully drive ratio of about 3 to 1, again readily available pulley diameters around 2 1/2 to 7 inches would work.
Chain drive with a bicycle ratchet pulley?Stop-and-go traffic is no place for an SLC. A Prius is for commuting to work and back.
The thing that ended my plan above was rolling backward. I couldn't think of an easy way to address that one. I don't think an AC compressor would like to be turned backward.