Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubes
In this study the boiling heat transfer characteristics of R290 in a 1, 2, and 4 mm horizontal micro-tube were investigated experimentally. The effects of mass flow rate [50-600 kg/(m2?s)], quality (0-1), and heat flux (5-20 kW/m2) on the boiling heat transfer coefficient at a saturation temperature...
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| Format: | Article |
| Language: | zho |
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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.0253-4339.2020.03.078 |
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| _version_ | 1850071776008077312 |
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| author | Wang Haoyu Liu Jianhua Zhang Liang Yu Xiaoxiao |
| author_facet | Wang Haoyu Liu Jianhua Zhang Liang Yu Xiaoxiao |
| author_sort | Wang Haoyu |
| collection | DOAJ |
| description | In this study the boiling heat transfer characteristics of R290 in a 1, 2, and 4 mm horizontal micro-tube were investigated experimentally. The effects of mass flow rate [50-600 kg/(m2?s)], quality (0-1), and heat flux (5-20 kW/m2) on the boiling heat transfer coefficient at a saturation temperature of 15 °C were analyzed. The results showed that increased mass flow velocity can enhance the heat transfer coefficient and the influence of mass flow rate on the heat transfer coefficient with low quality is smaller than that with high quality. The heat transfer coefficient increased with the increased heat flux, and the effect of critical quality on the heat transfer coefficient was apparent in 2 and 1 mm tubes. The heat transfer coefficient tended to decrease precipitously for 2 and 1 mm tubes. The transverse heat transfer coefficient increased with the decreasing pipe diameter under some conditions. In addition, this study also verified the adaptability of some existing correlations of R290. |
| format | Article |
| id | doaj-art-c4816a63c5e248ffb877439d3b1c9b40 |
| institution | DOAJ |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-c4816a63c5e248ffb877439d3b1c9b402025-08-20T02:47:13ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392020-01-014166506009Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubesWang HaoyuLiu JianhuaZhang LiangYu XiaoxiaoIn this study the boiling heat transfer characteristics of R290 in a 1, 2, and 4 mm horizontal micro-tube were investigated experimentally. The effects of mass flow rate [50-600 kg/(m2?s)], quality (0-1), and heat flux (5-20 kW/m2) on the boiling heat transfer coefficient at a saturation temperature of 15 °C were analyzed. The results showed that increased mass flow velocity can enhance the heat transfer coefficient and the influence of mass flow rate on the heat transfer coefficient with low quality is smaller than that with high quality. The heat transfer coefficient increased with the increased heat flux, and the effect of critical quality on the heat transfer coefficient was apparent in 2 and 1 mm tubes. The heat transfer coefficient tended to decrease precipitously for 2 and 1 mm tubes. The transverse heat transfer coefficient increased with the decreasing pipe diameter under some conditions. In addition, this study also verified the adaptability of some existing correlations of R290.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2020.03.078R290Micro-tubeboiling heat transfer |
| spellingShingle | Wang Haoyu Liu Jianhua Zhang Liang Yu Xiaoxiao Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubes Zhileng xuebao R290 Micro-tube boiling heat transfer |
| title | Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubes |
| title_full | Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubes |
| title_fullStr | Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubes |
| title_full_unstemmed | Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubes |
| title_short | Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubes |
| title_sort | study on boiling heat transfer characteristics of r290 in horizontal micro tubes |
| topic | R290 Micro-tube boiling heat transfer |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2020.03.078 |
| work_keys_str_mv | AT wanghaoyu studyonboilingheattransfercharacteristicsofr290inhorizontalmicrotubes AT liujianhua studyonboilingheattransfercharacteristicsofr290inhorizontalmicrotubes AT zhangliang studyonboilingheattransfercharacteristicsofr290inhorizontalmicrotubes AT yuxiaoxiao studyonboilingheattransfercharacteristicsofr290inhorizontalmicrotubes |