International Journal of Air-Conditioning and Refrigeration
- Volume 8 Issue 2
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- Pages.23-28
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- 2000
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- 2010-1325(pISSN)
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- 2010-1333(eISSN)
Nucleate Pool Boiling of a Structured Enhanced Tube Used in a Flooded Refrigerant Evaporator
- Kim, Nae-Hyun (Department of Mechanical Engineering, University of Inchon) ;
- Cho, Jin-Pyo (Department of Mechanical Engineering, University of Inchon) ;
- Choi, Kuk-Kwang (Department of Mechanical Engineering, University of Inchon)
- Published : 2000.11.01
Abstract
In this study, pool boiling performance of a structured enhanced tube for a flooded refrigerant evaporator was experimentally investigated. Tests were performed for three different refrigerants(R-11, R-123, R-l34a). Compared with the heat transfer coefficients of the smooth tube, the heat transfer coefficients of the enhanced tube were 6.6 times larger for R-11, 6.0 times larger for R-123 and 3.5 times larger for R-l34a, which are comparable with the performance of foreign products. The heat transfer coefficients of R-l34a was higher than those of R-11 or R-123, both for the enhanced tube and for the smooth tube. At 4.4