Feasibility Study of the Ø5 Tube-and-fin Heat Exchanger in Automotive Heat Pump System
The parallel flow microchannel (PFM) heat exchanger is widely used in automotive air conditioning system, but it has the disadvantage of easy-frost and difficult in water-drain in defrost . The traditional tube and fin heat exchanger can overcome the frost and defrost problem but has low efficiency....
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2013-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2013.01.035 |
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| Summary: | The parallel flow microchannel (PFM) heat exchanger is widely used in automotive air conditioning system, but it has the disadvantage of easy-frost and difficult in water-drain in defrost . The traditional tube and fin heat exchanger can overcome the frost and defrost problem but has low efficiency. In this paper a ?5 tube and fin heat exchanger is developed for the automotive heat pump. Performances of small diameter tube-and-fin heat exchanger and PFM heat exchanger are compared based on benchmark test. Results show that the system with small diameter tube-and-fin heat exchanger has 17.4%~23.7% higher COP in air conditioning mode, 12.6%~35.8% higher COP and 15~28℃ lower compressor discharge temperature in heat pump mode, which indicates that small diameter tube-and-fin heat exchanger is a promising solution to the automotive heat pump system of electric vehicle. |
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| ISSN: | 0253-4339 |