Geezus Kareiaust. You don't figure delta T based on INDOOR discharge temp and OUTDOOR ambient. You figure it based on the DIFFERENCE between what is ENTERING the evap and what is LEAVING the evap.
Yes, that's right. And the air entering the evaporator comes from…
…class? Anyone? Buehler?
From outside via a very short path. It's drawn in through the cowl air intake between the base of the windshield and the aft edge of the hood, down and in through the passenger-side dash pass-through, and from there directly into the evaporator coil. That's in every mode except "MAX A/C", in which the air is recirculated within the vehicle rather than drawn from outside. If one is following proper factory-specified system performance test protocol, one does not use "MAX A/C" for ∂T tests.
This is the '65-'72 A-body system we're talking about; try and keep up, willya? ;-)
