Two Stage Refrigeration Circuit Simulation
نویسندگان
چکیده
Typical automotive air conditioning refrigeration systems employ thermostatic expansion valve or orifice tube controls in a single stage refrigerant circuit. A new automotive air conditioning compressor has been developed that has a two stage compression process, which makes designing and producing a two stage refrigerant circuit more practical. Since this compressor can function in a single stage circuit and a two stage circuit, this paper uses it when comparing the system efficiencies by simulating both circuits. A model of this new compressor is incorporated in a proprietary computer program that solves the refrigerant loop for a steady state solution under a set of external operating conditions. For a two stage circuit, the results show that the compressor speed and input power can be reduced by 19%, while providing the same cooling capacity as the single stage circuit.
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