Correction Method of Two-phase Flow Heat Transfer and Pressure Drop in Micro-channel Parallel Flow Condenser
Two categories of correction method for two-phase flow condensation heat transfer and pressure drop were compared for a distributed parameter model of a microchannel condenser with R134a as the refrigerant. The Cross-repeated-testing nonlinear correction method was demonstrated to be better than the...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2020-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2020.03.031 |
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| Summary: | Two categories of correction method for two-phase flow condensation heat transfer and pressure drop were compared for a distributed parameter model of a microchannel condenser with R134a as the refrigerant. The Cross-repeated-testing nonlinear correction method was demonstrated to be better than the conventional simple polynomial fitting correction. Using the former correction, the error of the estimation of heat transfer can be reduced by 64.5% and the mean square error was less than 3%. Similarly, the error of refrigerant side pressure drop decreased by 82.05% and the mean square error was controlled within 10%. Furthermore, this method not only proved the correctness and validity of the simulation model of a microchannel parallel-flow condenser, but also identified a way to accurate prediction of key parameters during heat transfer, including heat flux and pressure drop. |
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| ISSN: | 0253-4339 |