Temp is a relative thing, factors involved now include gas mileage, etc.
Method to know is below, but meanwhile, understand that cold is not all of where its at, with ac, the removal of moisture is actually more comfortable than cold itself...on the human body...
So, is your system doing what it should, Need 4 things measured, Temp in front of condencer, low pressure, high pressure, and temp at middle or closest vent...
Refrigeration works like water, meaning it is predictable. At less than 32 ice, or solid, warmer to 212, liquid, and higher it becomes a vapor. (This is in absence of altitude and pressure or other influences, you get what I mean.)
Your refrigerant will be compressed to a liquid, gets very hot, and goes out front to the condencer, througe a dryer, then to an expansion valve. It is a liquid at the expansion valve due to the pressure exerted from the compressor.
The expansion valve releases the liquid into a much lower environment, and the liquid turns into a gas, and becomes very cold.... The environment is the equivalent of a heater core.
SO, if you make enough pressure at a given ambient temprature, you WILL make a liquid. and IF you have a low enough area after the expansion valve, the ref. WILL become a vapor. That is all that refrigeration can do, period.
After that it becomes a matter of system capacity....Fuel mileage demands erroded this point....
You need to be sure that you are not introducing any heat into the system, be sure that your heater core is not warm, or you have a physics matter...
Also, if it is really hot outside, exactly how much do you think you can drop THAT temprature, in one or two inches of the evaporator....? Just not a ton. This is what recirculate helps with, so at least eventually, you are cooling already cooled air, and that allows the rig to cool down faster...
I hope this makes sense to you, long story short, everything could be functioning absolutely correctly, and you have the symptoms you describe...
Doc
135 views
Usually answered in minutes!
×