Akbar Ali
Dr. Mohammed Ali
Dr. Neelesh K. Sahu
Harshit Chopra
Navneet Choudhary
Rishi Choudhary
Abstract
In this study, we are intending to achieve refrigeration using Liquefied Petroleum Gas (LPG) as a refrigerant with no additional cost. LPG is stored in the cylinder as a high pressurized liquid. Throttling from the nozzle of the cylinder, LPG changes its state from liquid to gas. While it undergoes expansion process in the nozzle LPG reduces its pressure by one-third of its original and significant amount of decrease in temperature is observed. The gas is further passed through capillary tubes with very small internal diameter which help LPG to undergo an assumed isenthalpic expansion. During which pressure and temperature is dropped and a refrigerating effect is seen in the evaporator. The refrigerating effect for a single hour operation is examined and the performance is analyzed. The work done may be compared to equivalent solar energy. The calculation of available solar energy is vital as it further provides the estimation of per square meter available potential. Various factors like beam radiation, diffuse radiation, geometrical parameters, etc play role in these estimations.
Keywords- Capillary tube, Coefficient of performance, LPG, solar refrigeration.