International Research Journal of Education and Technology

In this research work we have presented three variation of capillary tube diameter with the various new alternative of R22, the new refrigerant are R134a, R600a at different proportion are taken ratio of the new refrigerant R134a/R600a are 50:50, 70:30, 30:70 by mass percentage. The co-efficient of performance of refrigerant R134a/R600a and blending ratio 30/70 by mass percentage at 50mm capillary diameter and length 6feet is 62.30% more than R22, 50.38% more than R134a, 46.67% more than R600a, 48.50% more than blending ratio 50:50, 41.14% more than blending ratio 70:30. For Capillary tube diameter 55mm and 6feet length the co-efficient of performance of refrigerant R134a/R600a and blending ratio 30/70 by mass percentage is 52.38% more than R22, 33.19% more than R134a, 44.23% more than R600a, 21.53% more than R134a/R600a blending ratio 50:50, 14.31% more than R134a/R600a blending ratio 70:30. The co-efficient of performance of refrigerant R600a and 64mm capillary diameter and length 6feet is 55.62% more than R22, 39.96 more than R134a,

41.62 more than R134a/R600a blending ratio 50:50, 32.54% more than R134a/R600a blending ratio 70:30 by mass percentage, 12.80% more than R134a/R600a blending ratio 30:70 by mass percentage. There for R134a/R600a 30:70 by mass percentage is energy efficient refrigerant to replace R22 used in air conditioning test rig.

Keywords: Refrigerant, Co-Efficient Of Performance, Capillary Tube, Air Conditioning, Compressor Power