While my last series of columns explored liquid subcooling in a refrigeration system, this article will compare subcooling amounts in a refrigeration system incorporating an overcharge of refrigerant, a dirty condenser, and air in the system.
Note that all of the system check sheets used as samples in this article incorporate R-134a as a refrigerant. These systems are refrigeration systems with a thermostatic expansion valve (TXV) as a metering device with receivers.