Enhancement the Performance of Compression Refrigeration Cycle by Cooling Condenser Air in Hot Climate
Faez Abid Muslim Abd Ali†, Muwafaq Sh. Alwan‡, Laith Jaafer Habeeb‡†, Humam Kareem Jalghaf‡‡
University of Kufa /Faculty of Engineering/Mechanical Engineering Department
‡Department of Computer Engineering, Al-Iraqia University, Baghdad, IRAQ
‡†University of Technology / Training and Workshops Center
‡‡Mechanical Eng. Dept. University of Technology, Baghdad, Iraq.
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The present work, an experimental study has been carried out to investigate the effect of cooling condenser air to the performance of vapor compression refrigeration cycle, which decreases in coefficient of performance because of the increase in ambient air temperature. The experiment rig was constructed by using aluminum box contain the outdoor of spilt unit and evaporative cooling pad that pour water on it from the water tank by small water pump and rubber tube, to evaporative cooling for air which cooling the condenser cycle. The experimental thermal results proved that this method is successful to decrease air temperature that lead to cooling the condenser and decrease the presser and temperature of the refrigerant and lead to improve all the properties of the cycle. The coefficient of performance of the system is enhancing in a rate of 39% as a result of increase the refrigeration effect and decrease the compressor work in a rate of 18% and 34% respectively. The decrease in temperature of exit air from condenser by evaporative cooling compare with dry condenser air and the ambient in a rate of 46% and 29.5% respectively. The consumption of electric power decreased in a rate of (25-32) % compared with dry system.