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http://dx.doi.org/10.3795/KSME-B.2014.38.3.255

Experimental study on Effects of POE oil on R134a Evaporation Heat Transfer in Plate Heat Exchanger  

Chang, Young Soo (Dept. of Advanced Fermentation Fusion Science and Technology, Kookmin Univ.)
Jang, Jae Kyoo (Dept. of Mechanical Engineering, Graduate School, Kookmin Univ.)
Kang, Byung Ha (School of Mechanical Systems Engineering, Kookmin Univ.)
Kim, Sukhyun (School of Mechanical Systems Engineering, Kookmin Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.38, no.3, 2014 , pp. 255-262 More about this Journal
Abstract
To investigate the effect of oil on evaporation heat transfer of plate heat exchanger, evaporation heat transfer experiment was carried out using experimental apparatus for micro gear pumped R134a-oil circulation. By varying oil circulation rate of POE oil from 0 to 5%, evaporation heat transfer performance of plate heat exchanger was investigated. As OCR(Oil Circulation Ratio) increases, the evaporation heat transfer coefficient of R134a decreases and pressure drop increases. When the evaporating temperature is $30^{\circ}C$ and the refrigerant mass flow rate is 80 g/s, evaporation heat transfer rate decreases by 10 % and pressure drop increases by 10% at 2% of OCR condition.
Keywords
Plate Heat Exchanger; POE Oil; Evaporation Heat Transfer Coefficient;
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