Hi Gang,
Doc, funny you should mention a gas powered A/C. The utility I used to
work for sank some money into development of a natural gas fueled, internal
combustion powered, home central A/C unit. I believe the Mfg. was to be
either Carrier or York. Forgot about it until I was watching "This Old
House" the series on the Bellirica, Mass house. Lo and behold, the A/C unit
QUIETLY purring away only had a natural gas line and bell wire for the
controls running to it. Only a matter of time before one of the RV A/C boys
build one to run on Propane. Only time will tell.
Walt
S. W. Sandy
WBCCI # 4159 & VAC
Region 2 VAC Representative
1970 27' Overlander
South West New Jersey
Mail to: [EMAIL PROTECTED]
-----Original Message-----
From: Dr. Gerald N. Johnson <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Saturday, August 05, 2000 2:24 AM
Subject: Re: [VAC] Air Cond for Dreamers details
>Definitely dreaming.
>
>Figure at least 1200 watts for 9000 BTU air conditioning (coefficient of
>performance 3). At 12 volts (neglecting inverter efficiency) that's 100
>amps. The typical golf cart battery is about 90 amp hours, so a pair
>would supply that load almost an hour (two 6 volt batteries). 8 hours
>operation means sixteen. (weight about 3/4 ton). Maximum solar charging
>current 8 amps, and that's only if the panels are placed right, or track
>the sun... Deficit 92 amps at peak sun. Watt hour deficit... 10,000 watt
>hours consumption... 1000 watt hours charging. 10 amps from the
>"trickle" charger isn't a trickle but for this load it its. Still in 24
>hours there'd be 2400 watt hours charging from the trickle charger, 3400
>watts total. Could run the air conditioner every third or fourth day.
>
>I know there are natural gas fired air conditioners, but I didn't find
>any one claiming one for propane. It should be possible. It may be more
>practical to learn to sweat and to erect a solar reflection canopy over
>the Airstream to cut down on its heating. Or to tow the Airstream to a
>cooler climate though mosquitoes in Alaska are fairly thick in the
>summer time, and prairie land south of there can heat in the summer
>time. Perhaps the mountains are that summer spot of coolth.
>
>Gerald J.
>
