Abandon rear AC evaporator
There is a leak in the rear supply hose to the rear evaporator on my 2007 Tahoe. I want to cap the supply and delivery lines near the compressor. will I still have a working front AC system? The line is $350 and has to be installed by a chevy dealer due to some required dealer tool. Cost estimate $1,300.
I think even if you successfully block off the rear, you're going to need expert AC people to properly recharge the system. You might even search in your area for an AC specialist who has done this type of block-off before.
A good AC shop should know what's recommended. They might be able to do it by the pressures, but the variable displacement compressors are tricky for amateurs like me.
2014 Malibu 2LT, 2015 Cruze 2LT,
(Had to look that one up!)
Which has more heat in it, the warm refrigerant liquid entering the evaporator or the ice cold gas leaving it? The cold gas of course has much more heat in it. That's where explaining the latent (missing) heat of evaporation comes into play. You can see the heat that was picked up during vaporization when the gas is compressed by the temperature rise at the compressor. Then the enthalpy chart helps show how efficient the system is by how much the refrigerant can be cooled as it condenses back to a liquid. The shape of the numbered polygon in the center of the chart is defined by the efficiency of the heat transfer in both the evaporator and the condenser.
Edmunds Price Checker
Edmunds Lease Calculator
Did you get a good deal? Be sure to come back and share!
The refrigerant then goes through the expansion device where we get a resulting drop in pressure. The pressure change changes the boiling point of the refrigerant and it absorbs a large quantity of heat as it evaporates. The heat that it absorbs comes from the air inside the passengers compartment.
Watch this video which explains enthalpy quite nicely.