ENERGY SAVINGS WITH THE EFFECT OF MAGNETIC FIELD USING R290/600a MIXTURE AS SUBSTITUTE FOR CFC12 AND HFC134a

Abstract

This paper presents an experimental study on the replacement of CFC12 and HFC134a by the new R290/R600a refrigerant mixture as drop-in replacement refrigerant with and without the effect of magnetic field. Without any modification to the system components drop-in experimental tests were performed on a vapour compression refrigeration system with a reciprocating compressor, which was originally designed to operate with CFC12.The test results with no magnets showed that the refrigerant R290/R600a had 19.9-50.1% higher refrigerating capacity than R12 and 28.6-87.2% than R134a. The mixture R290/R600a consumed 6.8- -17.4% more energy than R12. The coefficient of performance of R290/R600a mixture increases from 3.9-25.1% than R12 at lower evaporating temperatures and 11.8-17.6% at higher evaporating temperatures. The effect of magnetic field force reduced the compressor energy consumption by 1.5-2.5% than with no magnets. The coefficient of performance of the system was higher in the range 1.5-2.4% with the effect of magnetic field force. The R290/600a (68/32 by wt.%) mixture can be considered as an excellent alternative refrigerant for CFC12 and HFC134a systems

Keywords

Dates

  • Submission Date2007-11-17
  • Revision Date2008-04-01
  • Acceptance Date2008-05-02

DOI Reference

10.2298/TSCI0803111M

References

  1. Devotta, S., Gopichand, S., Comparative Assessment of HFC 134a and Some Refrigerants as Alternatives to CFC 12, International Journal of Refrigeration, 15 (1992), 2, pp.112-18
  2. Richards, R. G., Shankland, I. R., Flamability of Alternative Refrigerants, ASHRE Journal, 34 (1992), 4, pp. 20-24
  3. Ritter, T. J., Flamability-Hydrocarbon Refrigerants, Proceedings of the Institute of Refrigeration Conference Safe and Reliable Refrigeration, London, 1996
  4. Richardson, R. N., Butterworth, J. S., The Performance of Propane/Isobutane Mixtures in a Vapour Compression Refrigeration System, International Journal of Refrigeration, 18 (1995), 1, pp. 58-62
  5. Jung, D., et al., Testing of a Hydrocarbon Mixture in Domestic Refrigerators, ASHRAE Transactions, Symposia AT-96-19-3, 1996, pp. 1077-1084
  6. Baskin, E., Synopsis of Residential Refrigerator/Freezer Alternative Refrigerants Evaluation, ASHRAE Transactions 104 - Part 2 (1998), pp. 266-273
  7. Kuijpers, L. J. M., de Wit, J. A., Janssen, M. J. P., Possibilities for the Replacement of CFC12 in Domestic Equipment, International Journal of Refrigeration, 11 (1988), 4, pp. 284-291
  8. Hammad, M. A., Alsaad, M. A., The Use of Hydrocarbon Mixture as Refrigerants in Domestic Refrigerators, Applied Thermal Engineering, 19 (1999), 11, pp. 1181-1189
  9. Jung, D., et al., Testing of Propane/Isobutene Mixture in Domestic Refrigerators, International Journal of Refrigeration, 23 (2000), 7, pp. 517-527
  10. Akash., B. A., Said., S. A., Assessment of LPG as a Possible Alternative to R12 in Domestic Refrigerators, Energy Conversion and Management, 44 (2003), 3, pp. 381-388
  11. Sami, S. M., Aucoin, S., Effect of Magnetic Field on the Performance of New Refrigerant Mixtures, International Journal of Energy Research, 27 (2003), 3, pp. 203-214
  12. Sami, S. M., Kitta, R. J., Behaviour of New Refrigerant Mixtures under Field, International Journal of Energy Research, 29 (2005), 13, pp. 1205-1213
  13. ***, Thermodynamic Properties of Refrigerants and Refrigerant Mixtures, NIST Standard Reference Database, Version 7.0., Gaithersburg, Md., USA
  14. ***, ASHRAE Guideline 2, Engineering Analysis of Experimental Data, Americal Society of Heating, Refrigeration and Air Conditioning Engineers, Atlanta, Geo., USA, 1986
Volume 12, Issue 3, Pages111 -120