Experimental Study on Local Heat Transfer Characteristics of Refrigerant R410A Condensing in a Multi-Port Extruded Tube
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- Wu Xuesong
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
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- Koyama Shigeru
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
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- Kuwahara Ken
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
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Abstract
In the present study, the local heat transfer characteristics are investigated experimentally for the condensation of a refrigerant R410A in a multi-port tube made of aluminum, which has 12 channels of 681.0 mm in length; 1.12 mm in hydraulic diameter. The tube-wall heat fluxes are measured in each subsection of 75mm in effective cooling length; the wall temperatures are also measured at 8 positions of each side of test-tube. The refrigerant pressure drops in 8 subsections are calculated with the measured pressures at inlet and outlet of the tube. The experiments are carried out with a mass velocity of G=100~300 kg/(m2s) and a constant inlet pressure of around 2.50 MPa. The experimental data of pressure drop are compared with the correlation of Koyama et al. correlation (2002), and local heat transfer coefficients are also compared with some correlations.
Journal
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- 九州大学大学院総合理工学報告
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九州大学大学院総合理工学報告 29 (3), 327-333, 2008-01
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
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Details 詳細情報について
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- CRID
- 1390853649766588928
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- NII Article ID
- 120001280782
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- NII Book ID
- AA1147319X
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- ISSN
- 13467883
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- DOI
- 10.15017/14586
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- HANDLE
- 2324/14586
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- NDL BIB ID
- 10200696
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Allowed