View Single Post
Old 07-21-2008, 01:24 PM   #8 (permalink)
lovemysan
EcoModding Apprentice
 
lovemysan's Avatar
 
Join Date: Mar 2008
Location: kansas city, mo
Posts: 140

gutless wonder - '02 Saturn sl sohc
90 day: 40.17 mpg (US)

econoburban - '05 chevy surburban 2wd LT
90 day: 19.43 mpg (US)
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by dremd View Post
I've heard that the average car's A/C system is powerful enough to cool a normal 2000 square foot home in Atlanta.

Might look in to a variable displacement compressor (Love mine!) before going electric.
I have a variable displacement compressor. However mine is mechanically controlled and resource hog. Some of the more advanced units are electronic and more efficient. I had a standard system in my old nissan truck that was more efficient because it rewarded the judicious a/c user with intermittent cycling. MY VDC doesn't cycle and never seems to change the amount of power necessary to provide the minimum amount of cooling. I tried setting the fan to low and different temp settings to no avail the FE was all the same. The temp control on my car merely mixes hot(drawn from the heater coil) and cool air together causing increased loss of eff. I find that manually cycling the compressor does yield increased FE. This thing siphons off a serious amount of power I est. 8-10hp.
__________________
2002 Saturn SL
sohc + 5spd = 50mpg
mod pics see link below

http://s75.photobucket.com/albums/i3...emysan/saturn/

Real men have wheel skirts.


  Reply With Quote