My thinking is we are not reading an actual sub-cooling, more sort of an average of the stuff bouncing around in there. Some of it is sub-cooled, some of it is superheated, it is all shooting through the line so fast it does not have time to make a perfect mix/equilibrium.
Originally Posted by ryan1088
Theoretically, 2 degrees subcooling would be a comfortable slight overcharge for a TXV to provide 100% liquid to the TXV, but in actual field operating conditions you will need 18 on a typical RTU. Below 16, bubbles.
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