CManT1914 said:I know how to be REAL economical, don't use the A/C. I don't, and I live in Texas! Besides, I always either have my windows rolled down or my top down.
mrvax said:It uses more gas to ride at highway speeds with the windows down than to use the A/C on low.
KLozeR said:you know.. like the heat that's transfered out from your car.
I have a little AC on my window in my room and if i go outside to the rear end of the AC, there's a radiator and a little fan that blows all this heat out. Isn't that the removed heat from the air that the AC sucks in? I dunno i may be completely wrong about this
billyfe390 said:Basically the heat is transferred to the refrigerent in your A/C system in cars it is R-134a or R-12 by the evaporator. The hot humid air either inside if set on max or outside if set on normal is circulated through the evaporator and the heat is extracted from it along with the moisture.
Here is how it the whole system works.
The low pressure vapor is then pumped into the condensor as a high pressure vapor. As it travels through the condensor it comes out as a high pressure liquid. It then travels through a dryer to remove any moisture inside the system then to the expansion valve. After it enters the expansion valve it is then transformed into a high pressure vapor which absorbes heat. There will be either a pressure switch, temperature switch or a variable displacement compressor in the system to cycle the compressor on and off. The vapor in the system can travel through the lines faster than the liquid and there is always a pressure differential between the two. If the high side pressure is allowed to build eventually somewhere in the system a line will explode.
Black_Cobra said:I'm with Joeymatt on this one and I'm surprised some of you didn't know how your AC controls work.
BTW, did you guys notice that your AC kicks on a tiny bit when you use the windshield defogger? It does that to dry the air, so leave it off when you race.
twogts4us said:It's not drying the air! It's cooling or heating the windshield (your choice) to try to match the air temp outside and prevent or stop the windshield from fogging. Also, I think it's known as a "defroster".
So much for knowing how your A/C controls work.
twogts4us said:It's not drying the air! It's cooling or heating the windshield (your choice) to try to match the air temp outside and prevent or stop the windshield from fogging. Also, I think it's known as a "defroster".
So much for knowing how your A/C controls work.
alfman9 said:I dont know if this is what you are referring to, but I was once instructed to never start a vehicle with the a/c on. I was told that "cranking" on the compressor would reduce its life span. I do know that on the computer climate controlled systems of GM, that the compressors do not engage for the first 30 seconds from starting the vehicle.
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