Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
787303 | International Journal of Refrigeration | 2011 | 5 Pages |
Abstract
In this study, external condensation heat transfer coefficients (HTCs) of HFC134a and R1234yf are measured on a plain, low fin, and Turbo-C tubes at the saturated vapor temperature of 39 °C with the wall subcooling of 3–8 °C. R1234yf is a new alternative refrigerant of low greenhouse warming potential for replacing HFC134a, one of the greenhouse gases in Kyoto protocol, used extensively in automobile air conditioners and other refrigeration systems. Test results show that the condensation HTCs of R1234yf are very similar to those of HFC134a for all three surfaces tested. For the development of heat transfer correlations, thorough property measurements are needed for R1234yf in the near future.
Keywords
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Ki-Jung Park, Dong Gyu Kang, Dongsoo Jung,