EXPERIMENTAL STUDY OF THE COMBINED EFFECT OF THE REFRIGERANT CHARGE, COMPRESSOR SPEED AND EXPANSION VALVE OPENING IN A REFRIGERATION SYSTEM

摘要：

An experimental study has been performed to evaluate the effect of refrigerant charge, electronic expansion valve (EEV) opening and compressor speed on the thermodynamic performance of a vapor compression refrigeration system. A testing apparatus comprised of a variable speed compressor (VSC), a pulse width modulated (PWM) electronic expansion valve and a device for varying the refrigerant charge, was designed and constructed. It has been found that for a given refrigerant charge the coefficient of performance (COP) at a particular compressor speed can be maximized by a proper opening of the expansion valve. It has also been shown that the optimum evaporator superheat is within a range of 1℃ to 3℃.

作者: G.POTTKER C.MELO

作者单位: POLO Research Laboratories in Cooling and Thermophysics Department of Mechanical Engineering, Federal University of Santa Catarina P.O. Box 476, 88040-900, Florianópolis-SC, BRAZIL

会议类型: 国际会议

会议名称: The 22nd International Congress of Refrigeration(第22届国际制冷大会)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-21（万方平台首次上网日期，不代表论文的发表时间）