Mechanism for Improvement in Heat Pump Performance by using Nano-Refrigerants: A Review

  Dr. C. Dhandapani

The effect of Al2O3 nano-particles on the performance of heat pump to improve its operational efficiency was presented in this paper. In the proposed method the heat pump charged with R600a inclusive with 0.06 % vol. of Al2O3 and used as a nano-refrigerant. Three different nano-particles size 20 nm, 40 nm and 50 nm of Al2O3 have been used for the preparation of nano-lubricant in the proposed mechanism. The mechanism for improvement includes simulations modeling the heat pump components such as compressor, evaporator, condenser and an expansion valve by computer of the heat pump system by using commercial MATLAB. The results showed that the addition of nano-particles to the refrigerant will improve its characteristics of refrigeration system heat transfer and thermal properties. Also, it showed that the using nano-refrigerant in refrigeration system will work normally at all conditions. The mechanism for improvement results found that the heat pump coefficient of performance increased by 19.1%, the power consumption reduced by 21.8 % when using a mineral oil with 20 nm nano-particles size of Al2O3 instead of the conventional mineral oil. Finally, the refrigeration effect increased and work of compressor decreased by using a small nano-particles size of Al2O3.

Keywords- Nano-Refrigerant, Heat pump, Coefficient of Performance, R600a, Non-Toxic, Global Warming Potential

Unique Identification Number - IJEDR1901079
Page Number(s) - 437-444
Pubished in - Volume 7 | Issue 1 | March 2019
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Dr. C. Dhandapani,   "Mechanism for Improvement in Heat Pump Performance by using Nano-Refrigerants: A Review", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.7, Issue 1, pp.437-444, March 2019, Available at :http://www.ijedr.org/papers/IJEDR1901079.pdf