Investigation of Thermodynamic Exhaust Line Losses of Hermetic Piston Compressor by FSI Method
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Keywords:Hermetic reciprocating compressor, FSI, reed valve, beam modeling
In the past few years, energy efficiency has become more critical because of the rise in the number of devices used in homes, the increase in the price of energy units, and the difficulty of getting energy. In addition to these worries, the laws passed about how energy is used in home appliances have made energy efficiency an essential factor in these devices. Hermetic reciprocating compressors are the heart of the refrigerator. They provide the circulation needed for the cooling process and use the most electricity in home refrigerators. Because of the compressor's importance, it is imperative to make it work better. This study used the fluid-solid interaction (FSI) method and CONVERGE CFD software to look at the thermodynamic performance of the hermetic reciprocating compressor, including the movement of the reed valves. The thermal performance of a refrigerator compressor using R600a under ASHRAE (54.4°C/- 23.3°C) operating conditions was measured numerically and compared to the experimental results. Under ASHRAE operating conditions, the compressor's compression work converged by 2.1%, 1.79.%, and 5.4% for 1300, 2100, and 3000 RPM, while the cooling capacity converged by 3.0%, 1.28.%, and 2.12.%, respectively. In the investigation, the suction, discharge, and cylinder pressures and the displacements of the suction and discharge reed valves were compared to data from experiments.
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