Accelerated Experimental Investigation on Long-term Performance Degradation of Heat Exchangers in Air Conditioners
To investigate the effect of deposited dust particles on the long-term performance degradation of outdoor air-conditioner units, acceleration experiments on dust deposition were carried out in the present study. An acceleration-experiment method for short-term dust deposition with high dust concentr...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2019-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2019.04.010 |
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| author | Ju Peiling Zhuang Dawei Zhan Feilong Ding Guoliang Tang Jiajun |
| author_facet | Ju Peiling Zhuang Dawei Zhan Feilong Ding Guoliang Tang Jiajun |
| author_sort | Ju Peiling |
| collection | DOAJ |
| description | To investigate the effect of deposited dust particles on the long-term performance degradation of outdoor air-conditioner units, acceleration experiments on dust deposition were carried out in the present study. An acceleration-experiment method for short-term dust deposition with high dust concentration was proposed to simulate the actual long-term dust deposition with low dust concentration, and an experimental rig was established to perform the accelerating-dust test. Acceleration experiments for 2–10 h were carried out on three types of heat-exchanger samples with different fin structures and tube row numbers, and the test results were used to predict the long-term performance degradation of outdoor heat exchangers operated for one to five years. The results show that after five years of operation, the air-side pressure drops of a one-tube wavy fin-and-tube heat exchanger, a two-tube wavy fin-and-tube heat exchanger, and a two-tube plate fin-and-tube heat exchanger were increased by 21.8%, 29.5%, and 25.0%, respectively. Meanwhile, the air-side heat-transfer capacity was reduced by 11.2%, 19.3%, and 18.0%, respectively. |
| format | Article |
| id | doaj-art-0f9a1a65f8b8485184a12d9d9fc0cfbb |
| institution | OA Journals |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2019-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-0f9a1a65f8b8485184a12d9d9fc0cfbb2025-08-20T02:02:54ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392019-01-014066511012Accelerated Experimental Investigation on Long-term Performance Degradation of Heat Exchangers in Air ConditionersJu PeilingZhuang DaweiZhan FeilongDing GuoliangTang JiajunTo investigate the effect of deposited dust particles on the long-term performance degradation of outdoor air-conditioner units, acceleration experiments on dust deposition were carried out in the present study. An acceleration-experiment method for short-term dust deposition with high dust concentration was proposed to simulate the actual long-term dust deposition with low dust concentration, and an experimental rig was established to perform the accelerating-dust test. Acceleration experiments for 2–10 h were carried out on three types of heat-exchanger samples with different fin structures and tube row numbers, and the test results were used to predict the long-term performance degradation of outdoor heat exchangers operated for one to five years. The results show that after five years of operation, the air-side pressure drops of a one-tube wavy fin-and-tube heat exchanger, a two-tube wavy fin-and-tube heat exchanger, and a two-tube plate fin-and-tube heat exchanger were increased by 21.8%, 29.5%, and 25.0%, respectively. Meanwhile, the air-side heat-transfer capacity was reduced by 11.2%, 19.3%, and 18.0%, respectively.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2019.04.010heat exchangerdust depositionperformance degradationaccelerated experimentair-side pressure dropheat transfer capacity |
| spellingShingle | Ju Peiling Zhuang Dawei Zhan Feilong Ding Guoliang Tang Jiajun Accelerated Experimental Investigation on Long-term Performance Degradation of Heat Exchangers in Air Conditioners Zhileng xuebao heat exchanger dust deposition performance degradation accelerated experiment air-side pressure drop heat transfer capacity |
| title | Accelerated Experimental Investigation on Long-term Performance Degradation of Heat Exchangers in Air Conditioners |
| title_full | Accelerated Experimental Investigation on Long-term Performance Degradation of Heat Exchangers in Air Conditioners |
| title_fullStr | Accelerated Experimental Investigation on Long-term Performance Degradation of Heat Exchangers in Air Conditioners |
| title_full_unstemmed | Accelerated Experimental Investigation on Long-term Performance Degradation of Heat Exchangers in Air Conditioners |
| title_short | Accelerated Experimental Investigation on Long-term Performance Degradation of Heat Exchangers in Air Conditioners |
| title_sort | accelerated experimental investigation on long term performance degradation of heat exchangers in air conditioners |
| topic | heat exchanger dust deposition performance degradation accelerated experiment air-side pressure drop heat transfer capacity |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2019.04.010 |
| work_keys_str_mv | AT jupeiling acceleratedexperimentalinvestigationonlongtermperformancedegradationofheatexchangersinairconditioners AT zhuangdawei acceleratedexperimentalinvestigationonlongtermperformancedegradationofheatexchangersinairconditioners AT zhanfeilong acceleratedexperimentalinvestigationonlongtermperformancedegradationofheatexchangersinairconditioners AT dingguoliang acceleratedexperimentalinvestigationonlongtermperformancedegradationofheatexchangersinairconditioners AT tangjiajun acceleratedexperimentalinvestigationonlongtermperformancedegradationofheatexchangersinairconditioners |