1. Experimental Research on Water Boiling Heat Transfer on Horizontal Copper Rod Surface at Sub-Atmospheric Pressure.
- Author
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Li-Hua Yu, Shu-Xue Xu, Guo-Yuan Ma, and Jun Wang
- Subjects
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EBULLITION , *HEAT transfer , *ATMOSPHERIC pressure , *REFRIGERANTS , *HEAT pumps , *COPPER , *STRUCTURAL rods - Abstract
In recent years, water (R718) as a kind of natural refrigerant--which is environmentally-friendly, safe and cheap--has been reconsidered by scholars. The systems of using water as the refrigerant, such as water vapor compression refrigeration and heat pump systems run at sub-atmospheric pressure. So, the research on water boiling heat transfer at sub-atmospheric pressure has been an important issue. There are many research papers on the evaporation of water, but there is a lack of data on the characteristics at sub-atmospheric pressures, especially lower than 3 kPa (the saturation temperature is 24 °C). In this paper, the experimental research on water boiling heat transfer on a horizontal copper rod surface at 1.8-3.3 kPa is presented. Regression equations of the boiling heat transfer coefficient are obtained based on the experimental data, which are convenient for practical application. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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