A Pioneering Addition to Household Appliances - LPG Refrigerator

In certain parts of the country and the globe, a consistent and steady supply of power is still scarce and inaccessible. In such places, this work will support refrigeration of nourishments, food, medications, etc... The results of such empirical research to assess the efficiency of household refrigerators is discussed in this article where melted petroleum gas (LPG) which is locally accessible comprising of 24.4% propane, 56.4% butane, and 17.2% isobutene varying from company to company is utilized as a Refrigerant. The use of LPG for refrigeration purposes can be environmentally friendly since it has no ozone depletion potential (ODP). LPG is often used to prepare food in homes, restaurants, hotels, and other establishments. CO2 and H2O is the combustion component of LPG. We built and evaluated a refrigerator that uses LPG as a refrigerant in this project. LPG is available in cylinders at high pressure. When this high-pressure LPG is passed through the capillary tube of small internal diameter, the pressure of LPG is dropped due to expansion, and phase change of LPG occurs in an isenthalpic process. The liquid refrigerant gains latent heat as it transitions from liquid to gas, and the temperature decreases. LPG can create a cooling effect in a confined space in this manner. We discovered that a refrigerator that uses LPG has a higher COP than a domestic refrigerator after conducting experiments.

Keywords: Innovative Refrigerator, LPG Refrigeration, Isobutene, LPG, liquefied petroleum gas, Capillary tube, Evaporator, COP, VCR, Refrigerating Effect.