Experimental study of convective heat transfer of R32/R134a inside horizontal microfin tubes
Experimental study is reported for heat transfer in forced convective boiling of a nonazeotropic mixture of R32/R134a (25%Wt/75%Wt) inside both smooth and microfin tubes with internal spiral grooves. The experimental results show that the microfin tubes have distinct performance advantages over the...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2003-01-01
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| Series: | Zhileng xuebao |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2003.01.004 |
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| author | 吴志光 马虎根 蔡祖恢 |
| author_facet | 吴志光 马虎根 蔡祖恢 |
| author_sort | 吴志光 |
| collection | DOAJ |
| description | Experimental study is reported for heat transfer in forced convective boiling of a nonazeotropic mixture of R32/R134a (25%Wt/75%Wt) inside both smooth and microfin tubes with internal spiral grooves. The experimental results show that the microfin tubes have distinct performance advantages over the smooth tube at similar conditions. Considerating the interaction effects among nucleation sites, secondary flow and capillary promotion, this paper describes the enhanced mechanism for the microfin tubes, and the circumferential wall temperature variation of R32/R134a in the annular flow regime was observed and analyzed for both smooth and microfin tubes, which caused by the composition concentration variation, gravity and secondary flow. |
| format | Article |
| id | doaj-art-756e02a776514f779ebb32e83173c4f9 |
| institution | OA Journals |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2003-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-756e02a776514f779ebb32e83173c4f92025-08-20T02:02:58ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392003-01-0166526526Experimental study of convective heat transfer of R32/R134a inside horizontal microfin tubes吴志光马虎根蔡祖恢Experimental study is reported for heat transfer in forced convective boiling of a nonazeotropic mixture of R32/R134a (25%Wt/75%Wt) inside both smooth and microfin tubes with internal spiral grooves. The experimental results show that the microfin tubes have distinct performance advantages over the smooth tube at similar conditions. Considerating the interaction effects among nucleation sites, secondary flow and capillary promotion, this paper describes the enhanced mechanism for the microfin tubes, and the circumferential wall temperature variation of R32/R134a in the annular flow regime was observed and analyzed for both smooth and microfin tubes, which caused by the composition concentration variation, gravity and secondary flow.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2003.01.004 |
| spellingShingle | 吴志光 马虎根 蔡祖恢 Experimental study of convective heat transfer of R32/R134a inside horizontal microfin tubes Zhileng xuebao |
| title | Experimental study of convective heat transfer of R32/R134a inside horizontal microfin tubes |
| title_full | Experimental study of convective heat transfer of R32/R134a inside horizontal microfin tubes |
| title_fullStr | Experimental study of convective heat transfer of R32/R134a inside horizontal microfin tubes |
| title_full_unstemmed | Experimental study of convective heat transfer of R32/R134a inside horizontal microfin tubes |
| title_short | Experimental study of convective heat transfer of R32/R134a inside horizontal microfin tubes |
| title_sort | experimental study of convective heat transfer of r32 r134a inside horizontal microfin tubes |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2003.01.004 |
| work_keys_str_mv | AT wúzhìguāng experimentalstudyofconvectiveheattransferofr32r134ainsidehorizontalmicrofintubes AT mǎhǔgēn experimentalstudyofconvectiveheattransferofr32r134ainsidehorizontalmicrofintubes AT càizǔhuī experimentalstudyofconvectiveheattransferofr32r134ainsidehorizontalmicrofintubes |