Performance Analysis of VCR System by Varying Diameters of Helical Condenser Coil Using R-600a as Refrigerant

Vapour Compression Refrigeration system is now a days used for all purposes of refrigeration in domestic as well as commercial applications which has high coefficient of performance. The system performance depends on the performance of all the components of the system. By changing design and design parameters of various components, we can enhance the performance of the system.The present work deals with experimental analysis of vapour compression refrigeration system with helical condenser coil varying in diameters using R-600A as refrigerant, which is modification to normal condenser of domestic refrigerator working on vapour compression refrigeration system using R-134A as refrigerant. An attempt has been made to increase the performance of the refrigeration system with a change in shape of condenser coil from grid to helical. The pressure gauges and temperature indicators are integrated with the system at appropriate positions. A series of experiments were conducted on grid shape condenser coil (existing) and helical shape condenser coil. Various parameters like Net Refrigeration Effect, Mass flow rate, Work of compression, Heat equivalent of work of compression per TR etc were evaluated. It was observed that the helical shaped condenser is more efficient than the grid type condenser coil.