Call for Paper - January 2023 Edition
IJCA solicits original research papers for the January 2023 Edition. Last date of manuscript submission is December 20, 2022. Read More

Computer Aided Comparative Analysis of the Effects of Superheating and Subcooling on the Performance of R134a and R717 in Simple Vapour Compression Systems

Print
PDF
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Year of Publication: 2017
Authors:
E. G. Saturday, C. E. Chidebe, U. Nwaiwu
10.5120/ijca2017912699

E G Saturday, C E Chidebe and U Nwaiwu. Computer Aided Comparative Analysis of the Effects of Superheating and Subcooling on the Performance of R134a and R717 in Simple Vapour Compression Systems. International Journal of Computer Applications 157(5):16-21, January 2017. BibTeX

@article{10.5120/ijca2017912699,
	author = {E. G. Saturday and C. E. Chidebe and U. Nwaiwu},
	title = {Computer Aided Comparative Analysis of the Effects of Superheating and Subcooling on the Performance of R134a and R717 in Simple Vapour Compression Systems},
	journal = {International Journal of Computer Applications},
	issue_date = {January 2017},
	volume = {157},
	number = {5},
	month = {Jan},
	year = {2017},
	issn = {0975-8887},
	pages = {16-21},
	numpages = {6},
	url = {http://www.ijcaonline.org/archives/volume157/number5/26826-2017912699},
	doi = {10.5120/ijca2017912699},
	publisher = {Foundation of Computer Science (FCS), NY, USA},
	address = {New York, USA}
}

Abstract

This work presents the computer aided comparative analysis of the effects of subcooling and superheating on the performance of R134a and R717 in simple vapour compression refrigeration systems. The analysis was done by carrying out a comprehensive study of the simple vapour compression refrigeration systems, determining the subcooling and superheating parameters by calculation and developing a computer program for the analysis and results generation. The results obtained show that superheating is not an ideal way of improving performance with R717 as the COP reduces with increasing superheat temperature, rather subcooling the refrigerant gives an improvement in the COP of the system. On the other hand, both subcooling and superheating refrigerant R134a improve the performance of the system as the COP increases with the subcooling and superheating temperatures. These were presented graphically using the MATLAB programming language. The program developed for this study can also be used for examination purposes to reduce the work load for the lecturer and to also ensure accuracy of results.

References

  1. J. Vaibhav, S. S. Kachhwaha, and R. S. Mishra, “Comparative Performance Study of Vapour Compression Refrigeration Systems with R22/R134a/R410a/R407c/M20,” Int. J. Energy Environ., vol. 12, no. 2, pp. 297–310, 2011.
  2. C. P. Arora, Refrigeration and Air Conditioning, 2nd ed. New Dehli: Tata McGraw-Hill Publishing Company Ltd., 2006.
  3. J. W. Linton, W. K. Snelson, and P. F. Hearty, “Performance Comparison of Refrigerants R-134a and R-12 in a Residential Exhaust Air Heat Pump,” ASHRAE Trans., vol. 98, no. 1, pp. 160 – 166, 1989.
  4. J. W. Linton, W. K. Snelson, and P. F. Hearty, “Effect of Condenser Liquid Subcooling on System Performance for Refrigerants CFC-12, FC-134a and HFC-152a,” ASHRAE Trans., vol. 95, no. 2, pp. 399 – 404, 1989.
  5. J. Pannock, R. Radermacher, Z. Liu, and K. Yu, “Evaluation of R-134a and R-152a as Working Fluids in a Domestic Refrigerator/Freezer,” ASHRAE Trans., vol. 100, no. 1, pp. 1344 – 1350, 1994.
  6. Y. Yi-Yie, L. Hsiang-chao, and L. Tsing-Fa, “Condensation Heat Transfer and Pressure Drop of Refrigerant R-134a in a Plate Heat Exchanger,” Int. J. Heat Mass Transf., vol. 42, pp. 993–006, 1999.
  7. C. O. Adegoke, M. A. Akintunde, and O. P. Fapetu, “Experimental Investigation of the Performance of a Design Model for Vapour Compression Refrigeration Systems,” West Indian J. Engin., vol. 28, no. 2, pp. 80–87, 2004.
  8. C. O. Adegoke, M. A. Akintunde, and O. P. Fapetu, “Comparative Exergetic Analysis of Vapour Compression Refrigeration Systems in the Superheat and Subcooled Regions,” A.U.J.T, vol. 10, no. 4, pp. 455–486, 2007.
  9. A. Şencan, R. Selbaş, Ö. Kızılkan, and S. A. Kalogirou, “Thermodynamic Analysis of Subcooling and Superheating Effects of Alternative Refrigerants for Vapour Compression Refrigeration Cycles,” Int. J. Energy Res., vol. 30, pp. 323–347, 2006.
  10. A. Arora and S. C. Kaushik, “Theoretical Analysis of a Vapour Compression Refrigeration System with R502, R404A and R507A,” Int. J. Refrig., vol. 31, no. 5, pp. 998–1005, 2008.
  11. K. M. Peethambaran and N. K. Asok, “Eco-Friendly Vapour Compression Refrigeration System Simulation Analysis with Double Pipe Evaporator and Condenser.” Department of Mechanical Engineering, Government Engineering College, Kerala, Department of Mechanical Engineering, Government Engineering College, Kerala., 2007.
  12. S. M. Zubair, “Performance Evaluation of Vapour Compression System,” Int. J. Refrig., vol. 22, pp. 235–243, 1999.

Keywords

Refrigeration, Subcooling, Superheating, Vapour Compression system