Experimental Analysis of LPG Refrigeration System

This paper investigates the result of an experimental study carried out to determine the performance of electricity free refrigerator system. This system makes use of pressure energy of LPG cylinder which comprises of 24.3% propane, 56.5% butane and 17.2% isobutene. The LPG is cheaper and possesses an environmental friendly nature with no Ozone Depletion Potential (ODP) and no Global Warming Potential (GDP). The refrigerator used in the present study is designed to work on LPG. When high pressure LPG allows to passes through a capillary tube pressure drop occurs due to which LPG changes from liquid to gases thus latent heat of refrigerant increases. This LPG after passing through evaporator produces some cooling effect. The performance parameters investigated is the refrigeration effect in certain time. The evaporator temperature reached 12.2OC from ambient temperature of 34.5OC. From this experiment which done in atmospheric condition, we can predict the optimum value of cooling effect with the suitable operating condition of regulating valve and capillary tube of the system.