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Study on Condensing Pressure Drop of Hydrocarbon Refrigerants  

Kim, Jae-Dol (동명대학교 환경설비공학과)
Choi, Jun-Hyuk (부경대학교 대학원 냉동공조공학과)
Jeong, Seok-Kwon (부경대학교 기계공학부)
Yoon, Jung-In (부경대학교 기계공학부)
Lee, Ho-Saeng (부경대학교 대학원 냉동공조공학과)
Abstract
Experimental results for pressure gradient of HCs refrigerants R-290. R-600a. R-1270 and HCFC refrigerant R-22 during condensing inside horizontal double pipe heat exchangers are presented. The test sections which have the tube inner diameter of 10.98mm. and the tube inner diameter of 8mm are used for this investigation. Hydrocarbon refrigerants have higher pressure drop than R-22 in both test sections with the diameters of 12.70mm and 9.52mm. Pressure drop increased with the increase of the mass flux. These results form the investigation can be used in the design of heat transfer exchanger using hydrocarbons as the refrigerant for the air-conditioning systems
Keywords
Condensation; Hydrocarbon; Natural refrigerant; Pressure drop;
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