The performance of the refrigeration system depends upon the heat transfer capacity of the refrigerant. Normally R12, R22, R600, R600a and 134a are used as a refrigerant. This refrigerant heat transfer capacity is not so good and increase power consumption. Due to these limitation nanofluids are enhanced with the normal lubricant and increases the heat transfer capacity and reduces the power consumption. Aluminium oxide nanofluid is used for enhancing the heat transfer capacity of the refrigerant in the refrigeration System. In this experiment heat transfer enhancement was investigated numerically by using Al2O3 nano-lubricant. The addition of nanoparticles to the lubricant results in improvements in the thermophysical properties and heat transfer characteristics of the refrigerant, thereby improving the performance of the refrigeration system. Stable nanolubricant has been prepared for the study. The experimental studies indicate that the refrigeration system with nanolubricant works normally. It is found that the freezing capacity increases by 86.26% and the COP increases up to 31% when PAG oil is replaced by a mixture PAG oil and aluminium oxide nanoparticles. Thus, using Aluminium oxide nanolubricant in refrigeration system is feasible
Article Details
Unique Paper ID: 156950
Publication Volume & Issue: Volume 9, Issue 5
Page(s): 412 - 416
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