Heat and Mass Transfer

, Volume 54, Issue 5, pp 1405–1413 | Cite as

Effect of CuO nanolubricant on compressor characteristics and performance of LPG based refrigeration cycle: experimental investigation

  • Ravinder Kumar
  • Jagdev Singh
  • Pankaj Kundal


Refrigeration, Ventilation and Air Conditioning system is the largest reason behind the increasing demand of energy consumption in the world and saving that energy through some innovative methods becomes a large issue for the researchers. Compressor is a primary component of the refrigeration cycle. The application of nanoparticles in refrigeration cycle overcomes the energy consumption issue by improving the compressor suction and discharge characteristics. In this paper, an experimental study is carried out to investigate the effect of copper oxide (CuO) nanoparticles on different parameters of the refrigeration cycle. CuO particles are appended with the system refrigerant through lubricating oil of the compressor. Further, the viscosity measurements and friction coefficient analysis of compressor lubricant for different fractions of nanoparticles has been investigated. The results showed that both the suction and discharge characteristics of the compressor were enhanced with the utilization of nanolubricant in LPG based refrigeration cycle. Nanoparticles additive in lubricant increases the viscosity which lead to a significant decrease in friction coefficient. The COP of the cycle was improved by 46%, as the energy consumption of the compressor was decreased by 7%.



Mass of water (kg)


Temperature difference


Time (sec)


Specific heat kJ kg−1 K−1


Energy meter constant.


Number of pulses taken in energy meter



Heat transfer coefficient


Mineral oil


copper oxide


Coefficient of performance


Compliance with ethical standards

Conflict of interest

The research paper has no conflict of interest.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringChandigarh Group of CollegesMohaliIndia
  2. 2.Department of Mechanical EngineeringBeant College of Engineering and Technology GurdaspurGurdaspurIndia

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