Effect of Fin Geometry on Condensation Heat Transfer of Refrigerant R134a on Enhanced Finned Tubes
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- TAKAHASHI Hiroyuki
- Hatano Plant, Kobelco & Materials Copper Tube, LTD.
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- SAEKI Chikara
- Hatano Plant, Kobelco & Materials Copper Tube, LTD.
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- KOYAMA Shigeru
- 1nstitute for Material Chemistry and Engineering, Kyushu University
Bibliographic Information
- Other Title
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- 冷媒R134aの管外凝縮熱伝達率に及ぼすブイン形状の影響
- 冷媒R134aの管外凝縮熱伝達率に及ぼすフィン形状の影響
- レイバイ R134a ノ カン ガイ ギョウシュク ネツ デンタツリツ ニ オヨボス フィン ケイジョウ ノ エイキョウ
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Abstract
This paper presents the experimental results on the outside condensation heat tral1sfer coefficient of horizontal enhanced filmed tubes. Three different fin geometry types of three-dimensional enhanced finned tubes were tested. A low-fin-tube (LFT) 19 fin-per-inch (fpi) was also tested for reference. Experimental refrigerant used was R134a. The heat tral1sfer coefficient test was carried out at a condensing temperature of 40°C, at a cooling water velocity of 1.5 m/s, and the heat flux of 10 to 110 kW/m2K. The outside condensation heat transfer coefficient of all three dimensional enhanced finned tubes were approximately 1.9 times higher than that of LFTl9fpi at high heat flux range. In low heat flux range, the enhanced finned tube of small circumferential segmentation pitches at the fin tip was shown the highest outside heat transfer coefficient for all tubes tested.
Journal
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- Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
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Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 23 (1), 57-65, 2006
Japan Society of Refrigerating and Air Conditioning Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390282679644302464
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- NII Article ID
- 10017961664
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- NII Book ID
- AA11125910
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- ISSN
- 2185789X
- 13444905
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- NDL BIB ID
- 7905806
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed