Heat exchanger test bench and using method thereof

Abstract

The invention provides a heat exchanger test bench and a using method thereof. The heat exchanger test bench comprises a compressor unit, an auxiliary condenser unit, a refrigerant metering unit and an auxiliary evaporator unit which are sequentially communicated to form a complete loop; the compressor unit is provided with an air suction side and an air exhaust side and provides circulating powerfor a refrigerant; the refrigerant input end of the auxiliary condenser unit is communicated with the exhaust end of the compressor unit; the input end of the refrigerant metering unit is communicated with the refrigerant output end of the condenser unit; the output end of the refrigerant metering unit quantitatively outputs the vapor-liquid two-phase refrigerant; the refrigerant input end of theauxiliary evaporator unit communicates with the output end of the refrigerant metering unit, and the output end of the auxiliary evaporator unit communicates with the air suction side of the compressor unit. When the performance of a to-be-tested heat exchanger is tested, the corresponding to-be-tested condenser unit or to-be-tested evaporator unit is connected into the loop; the refrigerant metering unit can adjust a supply amount of refrigerant in the loop.

Description

technical field [0001] The invention relates to the technical field of heat exchanger performance testing, in particular to a heat exchanger test bench and a use method thereof. Background technique [0002] Evaporators and condensers are two types of heat exchangers with different functions. They are the core heat exchange equipment used in vapor compression refrigeration cycle and absorption refrigeration cycle. They are used in HVAC, food refrigeration, freeze drying, low temperature exchange It has a wide range of applications in thermal and chemical heat transfer fields. [0003] The heat transfer test of the evaporator and condenser must be carried out on a special test bench in the design stage to check parameters such as heat transfer and water chamber resistance. Due to the difference in principle between the evaporator and the condenser, the current test bench for the two is designed and built separately, and the test equipment cannot be used universally; and in o...

AI Technical Summary

Problems solved by technology

Due to the difference in principle between the evaporator and the condenser, the current test bench for the two is designed and built separately, and the test equipment cannot be used universally; and in order to avoid the oil return capacity of the evaporator and the pipeline under low load conditions, the compressor will be damaged. Due to problems such as lack of oil and burning, the test capacity of the test bench is relatively fixed, resulting in high design and construction costs of the bench, and a more complicated system. The scope of application of the heat exchanger to be tested is very limited.

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