Refrigerant Circuitry Optimization for Heat Pump Finned-tube Evaporators with Integer Gradient Descent Algorithm
A refrigerant cireuitry qptimization method using an ineger gadient descent algorithm for hea pump finned-tube evaporators was devebped .A zone-based evaponlor simulation model was built, and the entopy genention variations with different evaporator refrigenant circuits were invetigated. It was co...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2021-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2021.03.034 |
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| Summary: | A refrigerant cireuitry qptimization method using an ineger gadient descent algorithm for hea pump finned-tube evaporators was devebped .A zone-based evaponlor simulation model was built, and the entopy genention variations with different evaporator refrigenant circuits were invetigated. It was concluded that when the designed heat transfer capacity increases. refrigerant passes should be increased, and the split point should be moved forward to minimize evaporator entropy generation. Subsequently, experiments were conducted to validate the relationship between the lower evaporator entropy generation (theoretical results) and the higher COP (experimental results) of a specific heat pump system. The evaporator entropy generation based on simulation results proved an effective parameter for predicting system COP variation trends. Subsequently, evaporator entropy generation was selected as the cost function, and an integer gradient descent algorithm was applied to minimize the evaporator entropy generation. With the proposed optimization method, the optimum evaporator refrigerant circuits corresponding to the heat transfer capacity in the range of 2000–6000 W were selected. |
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| ISSN: | 0253-4339 |