From your last post, I can see your concept of the heat exchange mechanism in the condenser is flawed. The heat transfer function is not simply gas temperature in vs liquid temperature out. The majority of the heat transfer happens at phase change, at saturation pressure and temperature. Once you charge the system past a certain point, your discharge pt will rise as your superheat and subcooling outrun the phase change in the condenser.
I just forced this condition in my latest window shaker thread as part of preliminary tests. Even though my rig was severely overcharged, it still worked. Nevermind the detail that the compressor was running at 2000 watts or better of power draw (due to the 100 degrees of combined superheat and subcooling), the thing blew hot air.
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