Browse > Article

Study on the Counterflow Regenerative Evaporative Cooler with Finned Channels  

Choi, Bong-Su (Graduate School, KyungHee University)
Hong, Hi-Ki (School of Mechanical and Industrial System Engineering, KyungHee University)
Lee, Dae-Young (Korea Institute of Science and Technology)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.20, no.7, 2008 , pp. 447-454 More about this Journal
Abstract
The regenerative evaporative cooler(REC) is to cool a stream of air using evaporative cooling effect without an increase in the humidity ratio. In the regenerative evaporative cooler, the air can be cooled down to a temperature lower than its inlet wet-bulb temperature. Besides the cooling performance, for practical application of the regenerative evaporative cooler, the compactness of the system is also a very important factor to be considered. In this respect, three different configurations, i.e., the flat plate type, the corrugated plate type, and the finned channel type are investigated and compared for the most compact configuration. The optimal structure of each configuration is obtained individually to minimize the volume for a given effectiveness within a limit of the pressure drop. Comparing the three optimal structures, the finned channel type is found to give the most compact structure among the considered configurations. The volume of the regenerative cooler can be reduced to 1/8 by adopting the finned channel type as compared to that of the flat plate type.
Keywords
Regenerative evaporative cooler, REC; Evaporative cooling; Corrugated pla; Finned channel;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Erens, P. J. and Dreyer, A. A., 1993, Modelling of indirect evaporative air coolers, Int. J. Heat Mass Transfer, Vol. 36, pp. 17-26   DOI   ScienceOn
2 Stoitchkov, N. J. and Dimitrov, G. I., 1998, Effectiveness of crossflow plate heat exchanger for indirect evaporative cooling, Int. J. Refrig., Vol. 21., pp. 463-471   DOI   ScienceOn
3 Lee, D.-Y. and Vafai, K., 1999, Analytical charaterization and conceptual assessment of solid and fluid temperature differentials in porous media, Int. J. Heat Mass Transfer, Vol. 42, pp. 423-435   DOI   ScienceOn
4 Hsu, S. T., Lavan, Z. and Worek, W., 1989, Optimization of wet-surface heat exchangers, Energy, Vol. 14, pp. 757-770   DOI   ScienceOn
5 Maclaine-cross, I. L. and Banks, P. J., 1981, A general theory of wet surface heat exchangers and its application to regenerative evaporative cooling, J. of Heat Transfer, Vol. 103, pp. 579-585   DOI
6 Song, C. H., Lee, D.-Y., and Ro, S. T., 2003, Heat transfer enhancement in an air-cooled heat exchanger by evaporative cooing, Int. J. Heat Mass Transfer, Vol. 46, pp. 1241-1249   DOI   ScienceOn
7 Metwally, H. M. and Manglik, R. M., 2004, Enhanced heat transfer due to curvatureinduced lateral vortices in laminar flows in sinusoidal corrugated-plate channels, Int. J. Heat Mass Transfer, Vol. 47, pp. 2283-2292   DOI   ScienceOn
8 Stasiek, J. and Collins, M. W., Ciofalo, M., and Chew, P. E., 1996, Investigation of flow and heat transfer in corrugated passages-I. Experimental results, Int. J. Heat Mass Transfer, Vol. 39, pp. 149-164   DOI   ScienceOn
9 Focke, W. W., Zachariades, J. and Olivier, I., 1985, The effect of the corrugation inclination angle on the thermohydraulic performance of plate heat exchangers, Int. J. Heat Mass Transfer, Vol. 28, pp. 1469-147   DOI   ScienceOn
10 Song, G.-E. and Lee, D.-Y., 2006, A method to reduce flow depth of a plate heat exchanger without a loss of heat transfer performance, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 18, pp. 129-136   과학기술학회마을
11 Lee, D.-Y., Jin, J. S. and Kang, B. H., 2002, Momentum boundary layer and its influence on the convective heat transfer in porous media, Int. J. Heat Mass Transfer, Vol. 45, pp. 229-233   DOI   ScienceOn
12 Pescod, D., 1979, A heat exchanger for energy saving in an air conditioning plant, Trans, ASHRAE, Vol. 85, pp. 238-251