Theoretical Evaluation of Vapor compression refrigeration cycle with integrated mechanical subcooling
DOI:
https://doi.org/10.69996/fmep.2025009Keywords:
R134a, Subcooling, Theoretical, Refrigerant, VCRSAbstract
In this paper, the vapor compression refrigeration system with integrated mechanical subcooling is analyzed. With the increasing power demand of the VCRS cycle, the need for its cop improvement has increased. To reduce its power requirement, the subcooling is studied theoretically. The theoretical analysis is done on the Engineering Equation Solver software. Different variations are plotted using the software, and reasons are stated for the different variations. Different optimization techniques are used for optimizing the system variables. The variables optimized include evaporator temperature, condenser temperature, subcooling temperature, and overlap temperature. The cop is found to increase by 3.5%. The optimization algorithm used is the gradient search method. The results will be used by the
industry to improve refrigeration systems.
References
[1] A. J. Hamad, “Performance investigation of vapor compression refrigeration system with integrated mechanical sub-cooling circuit using hydrocarbon blends,” In Printed in Iraq,vol.09, no.01, 2016.
[2] J. R. Khan and S. M. Zubair, “Design and rating of dedicated mechanical subcooling vapour compression refrigeration systems,” Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, vol.214, no.5, pp.455–471, 2000.
[3] B. A. Qureshi, M. Inam, M. A. Antar and S. M. Zubair, “Experimental energetic analysis of a vapor compression refrigeration system with dedicated mechanical sub-cooling,” Applied Energy, vol.102, pp.1035–1041, 2013.
[4] A. Srivastava and V. Bajpai, “Experimental Investigation of a Vapor Compression Refrigeration (VCR) System with Integrated Mechanical Subcooling,” Article in Journal of Basic and Applied Engineering Research, vol.5, no3, pp.239–244, 2018.
[5] S. M. Zubair, “Thermodynamics of a vapor-compression refrigeration cycle with mechanical subcooling,” Energy, vol.19, no.6, 1994.
[6] H. T Chua, K. C .Ng and J. M. Gordon,“ Experimental study of the fundamental properties of the reciprocating chillers and their relation to thermodynamic modeling and chiller design,” International Journal of Heat and Mass transfer, vol.39, no.11, pp.2195-2204, 1996.
[7] V. Bahel and Syed M. Zubair, “Mechanical subcooling improves supermarket refrigeration performance,” Heating Piping Air Conditioning, vol.60, no.2, pp.105-107, 1988.
[8] Syed M. Zubair, “Thermodynamics of a Vapour Compression refrigeration cycle with mechanical subcooling,” Energy-The International Journal, vol,19, no.6, pp.707-715, 1994.
[9] Syed M Zubair, S. H Khan and M. Yaqub,“Second law based thermodynamic analysis of Two Stage and Mechanical-Subcooling Refrigeration Cycles” , International Journal of Refrigeration, vol.19, no.8, pp.506-516, 1996.
[10] Bilal Ahmed Qureshi, Syed M. Zubair “The impact of fouling on performance of a vapor compression refrigeration system with integrated mechanical sub-cooling system,” Applied Energy, pp.750-762, 2012.
[11] Bilal Ahmed Qureshi and Syed M. Zubair, “Performance degradation of a vapor compression refrigeration system under fouled conditions,” International Journal Of Refrigeration, pp. 1016 – 1027, 2011.
[12] Jameel-ur-Rehman Khan and Syed M. Zubair, “Design and rating of an integrated mechanical subcooling vapor-compression refrigeration system,” Energy Conversion & Management, pp.1201- 1222, 2000.
