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Heat transfer enhancement by metal foam during nucleate pool boiling of refrigerant/oil mixture at a wide range of oil concentration
Zhu Y; Hu HT; Ding GL; Zhuang DW; Peng H(彭浩); Ding, GL; Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Dongchuan Rd 800, Shanghai 200240, Peoples R China.
Source PublicationHVAC&R RESEARCH
2012-05-06
Volume18Issue:3Pages:377-389
ISSN1078-9669
AbstractNucleate pool boiling heat transfer characteristics of refrigerant/oil mixtures on metal foam covers were experimentally investigated at a wide range of oil concentrations. The refrigerant and oil are R113 and VG68, respectively;and the oil concentration varies from 0% to 40%. The copper foams have pores per inch (ppi) of 10 and 20 and porosity from 90% to 98%. Experimental conditions include a saturation pressure of 101 kPa (14.696 psi), and heat flux from 30 to 137 kW m(-2) (2.6417 to 12.064 Btu s(-1) ft(-2)). The experimental results indicate that the nucleate pool boiling heat transfer coefficients on copper foam covers are larger than those on a plain heating surface by a maximum of 450%; the presence of oil deteriorates the nucleate pool boiling heat transfer on copper foam covers by a maximum of 90%. With the increase of oil concentration, the deterioration effect on high ppi metal foams is more obvious than that for low ppi. A correlation for predicting the nucleate pool boiling heat transfer coefficient of refrigerant/oil mixtures on metal foam covers is developed, and it agrees with 90% of the experimental data within a deviation of +/- 30%.
KeywordCopper-foam R-114-oil Mixtures Open Cells Convection Surfaces Smooth Tubes Water
Subject Area制造工艺力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000305250300008
Funding OrganizationThe authors gratefully acknowledge the support of National Nature Science Foundation of China (50906048) and China Postdoctoral Science Foundation (20090460618) for this study.
ClassificationQ3
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46585
Collection国家微重力实验室
Corresponding AuthorDing, GL; Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Dongchuan Rd 800, Shanghai 200240, Peoples R China.
Recommended Citation
GB/T 7714
Zhu Y,Hu HT,Ding GL,et al. Heat transfer enhancement by metal foam during nucleate pool boiling of refrigerant/oil mixture at a wide range of oil concentration[J]. HVAC&R RESEARCH,2012,18(3):377-389.
APA Zhu Y.,Hu HT.,Ding GL.,Zhuang DW.,Peng H.,...&Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Dongchuan Rd 800, Shanghai 200240, Peoples R China..(2012).Heat transfer enhancement by metal foam during nucleate pool boiling of refrigerant/oil mixture at a wide range of oil concentration.HVAC&R RESEARCH,18(3),377-389.
MLA Zhu Y,et al."Heat transfer enhancement by metal foam during nucleate pool boiling of refrigerant/oil mixture at a wide range of oil concentration".HVAC&R RESEARCH 18.3(2012):377-389.
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