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A Study on Characteristics of HFC-l34a and OS-l2a Refrigerant in Automobile Air-Conditioning System  

이종인 (조선이공대학 자동차과)
하옥남 (조선대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.3, 2002 , pp. 136-142 More about this Journal
Abstract
HFC-134a is currently used as the refrigerant in automobile air-conditioner, replacing the ozone depleting refrigerant CFC-12. Although HFC-l34a has no ozone depletion potential, it has a relatively high global warming potential, approximately 1300 tins that of CO$_2$ over a 100 year time horizon. Therefore, HFC- l34a does not seem to be a perfect alternative refrigerant due to high GWP. For this reason, non-azeotrope refrigerant mixture have been proposed as a long-term and drop-in alternative to HFC-l34a in the automobile air-conditioning system which has variable operating conditions with changes in RPM and pressure ratio. In this study,OS-l2a of which thermodynamic properties are similar to those of HFC-l34a is selected among the mixed refrigerant. HFC-l34a and OS-l2a are examined experimently by the performance test in the same automobile air-conditioning system.
Keywords
Automobile air-conditioning; Alterative refrigerant; GWP; RPM;
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  • Reference
1 C. W. Bullard, R. Radermacher, New Technologies for Air Conditioning and Refrigeration, Annu. Rev. Energy Environ, pp. l13-152. 1994
2 H. N. An, 'Study on Use of New Refrigerant in the Motor vehicle,' The Society of Air-condition-ing and Refrigerating Engineers of Korea, Vol. 25, No.6, pp.515-523, 1996
3 H. C. Lee, B. J. Park, D. S. Jung, S. J. Oh, E. K. Jung, 'Performance of Alternative Refrigerant Mixtures Containing CF3I for CFC12 in Automobile Air Conditioners,' The Society of Air-conditioning and Refrigerating Engineers of Korea Pro-ceedings of the SAREK '99 Summer Annual Conference(I), pp.219-224, 1999
4 J. S. Han, J. G. Youn, S. P. Won, 'A Study on Per-formance Characteristic of a New Alternative Re-frigerant Replacing HFC- 134a,' The Society of Air-conditioning and Refigerating Engineers of Korea Proceedings of the SAREK '99 Summer Annual Conference(I), pp.219-224, 1999
5 S. Soloman, D. Wuebbles, ODPs, GWPs, and Future Chlorine/Bromine Loading, Scientific Assessment of Ozone Depletion, pp. 131-136, 1994
6 D. S. Jung, 'Development Trend of New Alternative Refrigerant,' The Society of Air-conditioning and Refrigerating Engineers of Korea, Vol.25, No.6, pp.479-488, 1996
7 UNEP, Report of the Secretariat on the Reporting of Data by the Parties in Accordance With Article of the Montreal Protocal, UNEP/Ozl. Pro. 3/5, 1991
8 S. L. Smith, 'Void Fraction in Two-phase Flow: A Correlation based on an Equal Velocity Heated Model,' Proc. Inst. Mech. Engng, pp.647-657, 1970
9 M. Mclinden, S. Klein, E. Lemmin, A. Peskin NIST Thermodynamic and Transport Properties of Refigerants and Refrigerant Mixtures(REFPROP) Version 6.0, National Institute of Standards and Technology, Boulder, Co., U.S.A., 1998