Design and Optimization of Compact Heat Exchangers in Refrigeration Cycle

Abstract

Compact heat exchangers have a significant impact on energy transfer and therefore optimization of heat                 exchangers increases the efficiency of thermal energy transfer and gas cooling degrees. Such heat exchangers are also cost-effective. Condenser and evaporator of refrigeration vapor compression cycles supplied with R-134 are both compact heat exchangers which play a significant role. In this study, the compact heat exchangers were investigated in terms of thermal efficiency. Laminated evaporator and parallel flow condenser (as the most important types of compact heat exchangers), were designed for refrigeration cycle. The formulation was based on effectiveness method   and a computer analysis was carried out for optimization. Also a model was presented for the whole refrigeration cycle. Finally results were compared to experimented data and revealed a very good agreement.
 

Keywords

References

[1] Sunden B. & Shah R.K., Compact Heat Exchangers, 2007.
[2] Kays, london, Compact Heat Exchanger, 1975.
[3] Davis G.L., Chianese Jr.F. & Scott T.C., “Computer simulation of automotive air conditioning”, Society of automotive Engineers, 1972.
[4] Kyle D.M., Mei V.C. & Chen F.C., “An automobile air conditioning design model”, Society of Automotive Engineers, 1993.
[5] Sahnoun A. & Webb R.L., “Prediction of heat transfer and friction for the louver fin geometry”, ASME Journal of Heat Transfer, Vol. 114, pp. 893-900, 1992.
[6] Webb R.L., Chang Y.J. & Wang C.C., “Heat transfer and friction correlations for the louver fin geometry”,              J. Mech E, C496/: 081: 533-41, 1995.
[7] Castro F., Tinaut F.V. & Rahman Ali A.A., “Automotive evaporator and condenser modeling”, Society of Automotive engineers, 1993.
[8] Anon, Refrigeration technical data, Japan Refrigeration Association, 1986.
[9] Kakac S., Shah R.K. & Aung W., Handbook of single-phase convective heat transfer, John wiley and sons, Inc., 1987.
[10] Dohoy J. & Dennis N., “Numerical modeling of cross flow compact heat exchanger with louvered fins using thermal resistance concept”, The Journal of University of Michigan, 2002.
[11] Sunden B., International Journal of Heat Exchangers, Volume VIII, 2007.
 
Journal of Petroleum Research
Volume 17, Issue 56.2 - Serial Number 56
November and December 2007
Pages 70-78

Files

Share

How to cite

Statistics