Improved V.C.R. System by Using Sub-Cooling and Diffuser

Authors

  • Amit Narwal Asstt. professor, Department of Mechanical Engineering, Dronacharya College of Engineering, Gurgaon-123506, India Author
  • Sarvesh Kumar B.Tech Student, Department of Mechanical Engineering, Dronacharya College of Engineering, Gurgaon-123506, India Author
  • Rishabh Verma B.Tech Student, Department of Mechanical Engineering, Dronacharya College of Engineering, Gurgaon-123506, India Author
  • Ravi Kumar B.Tech Student, Department of Mechanical Engineering, Dronacharya College of Engineering, Gurgaon-123506, India Author

DOI:

https://doi.org/10.53555/nnmce.v1i1.373

Keywords:

vapour compression refrigeration system, sub- cooling and diffuser

Abstract

This paper aims to improve the coefficient of performance of the system. To improve the coefficient of performance, it should be noted that compressor work should decrease and the refrigerating effect should increase. Modifications in the condenser are meant to increase the degree of sub-cooling of the refrigerant, which increases the refrigerating effect, or more cooling water is required in the condenser. The purpose of a compressor in a vapor compression system is to elevate the pressure of the refrigerant, but the refrigerant leaves the compressor with comparatively high velocity, which may cause splashing of liquid refrigerant in the condenser tube, liquid hump, and damage to the condenser by erosion. It is needed to convert this kinetic energy to pressure energy by using a diffuser. By using a diffuser, power consumption is less for the same refrigerating effect, so performance is improved.

References

[1] Jianlin Yu, Hua Zhao and Yanzhong Li,” Application of an ejector in auto cascade refrigeration cycle for the performance improvement”, International journal of refrigeration, vol.31, 2008, pp.279-286.

[2]Yinhai Zhu and Peixue Jiang, “Hybrid vapour compression refrigeration system with an integrated ejector cooling cycle” International journal of refrigeration, vol.35, 2012, pp.68-78.

[3] N.D. Banker, P. Dutta, M. Prasad and K. Srinivasan,” Performance studies on mechanical+ adsorption hybrid compression refrigeration cycles with HFC 134a”, International journal of refrigeration, vol.31, 2008, pp.1398-1406.

[4] Andrea Chesi, Giovanni Ferrara, Lorenzo Ferrari and Fabio Tarani ” Suitability of coupling a solar powered ejection cycle with a vapour compression refrigerating machine” Applied Energy, vol.97, 2012, pp.374-383.

[5]A. Selvaraju and A. Mani, “Experimental investigation on R134a vapour ejector refrigeration system”,International Journal of Refrigeration, Vol.29 (2006) pp.1160-1166.

[6]L. Kairouani, M. Elakhdar, E. Nehdi and N. Bouaziz,” Use of ejectors in a multi-evapourator refrigeration system for performance enhancement”, International Journal of Refrigeration, Vol.32 (2009), pp.1173-1185.

[7]F. W. Yu and K. T. Chan, Application of Direct Evapourative Coolers for Improving the Energy Efficiency of Air-Cooled Chillers, A.S.M.E., Vol. 127, August 2005, pp. 430-433.

[8] website: http://en.wikipedia.org/wiki/Vapour-compression_refrigeration

[9] Yunus A. Cengel and Michael A. Boles. Thermodynamics An Engineering Approach. Tata McGraw-Hill, 2003.

Downloads

Published

2014-01-31

How to Cite

Improved V.C.R. System by Using Sub-Cooling and Diffuser. (2014). Journal of Advance Research in Mechanical and Civil Engineering (ISSN: 2208-2379), 1(1), 16-19. https://doi.org/10.53555/nnmce.v1i1.373