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Performance Analysis and Testing of a Cross-Flow Aluminum Heat Exchanger for Kitchen Ventilation  

Kim N.H. (Department Mechanical Engineering, University of Incheon)
Cho J.P. (Graduate School, University of Incheon)
Han S.P. (Graduate School, University of Incheon)
Choi J.Y. (Korea Testing Laboratory)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.18, no.3, 2006 , pp. 193-201 More about this Journal
Abstract
Thermal performance model was developed for a cross-flow aluminum heat exchanger with relatively short passage. Appropriate heat transfer coefficient and friction factor equations for laminar channel flow were obtained considering developing regions. The heat exchanger was analyzed using the unmixed cross-flow ${\epsilon}$-NTU relationship considering leak-age between streams. Thermal contact between corrugations and plates was also considered. Tests were separately conducted for two samples - one made of non-treated aluminum sheets, and the other made of varnish-treated ones. The samples were made by stacking corrugations and plates one after another. The model adequately predicted the thermal performance and pressure drop of the non-treated heat exchanger. The thermal performance of the varnish-treated one was $7{\sim}12%$ overpredicted, and the pressure drop of the varnished-treated heat exchanger was $5{\sim}15%$ underpredicted. The air leakage ratio of the non-treated heat exchanger was $23{\sim}26%$. The ratio decreased to less than $10%$ with the varnish treatment.
Keywords
Thermal performance analysis; Aluminum heat exchanger; Kitchen ventilation; Air leakage ratio; Heat exchange efficiency;
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  • Reference
1 Roetzel, W., 1974, Heat exchanger design with variable transfer coefficients for crossflow and mixed arrangements, Int. J. Heat Mass Transfer, Vol. 17, pp. 1037-1049   DOI   ScienceOn
2 ASHRAE Standard 41.1, 1986, Standard method for temperature measurement, ASHRAE
3 Fan Manual, 2005, Hanil Electric Co
4 Kays, W. M. and London, A. L., 1984, Compact Heat Exchangers, pp. 108-114
5 KARSE B 0030-2003, Performance Test of Ventilation Unit
6 ASHRAE Standard 41.5, 1986, Standard measurement guide, engineering analysis of experimental data, ASHRAE
7 Johnson, J. E., 1997, Heat and mass transfer between two fluid streams separated by a thin, permeable barrier, Ph.D thesis, University of Minnesota, Department of Mechanical Engineering
8 Shah, R. K. and London, A. L., 1978, Laminar flow forced convection in ducts, Advances in Heat Transfer, Eds., T. F. Irvine and J. P. Hartnett, Supplement 1, Academic Press
9 ASHRAE Standard 41.2, 1986, Standard method for laboratory air-flow measurement, ASHRAE
10 Fan Tester Manual, 2001, Incheon Technical Innovation Center
11 The act of indoor air quality for multi -use facilities, 2003, Ministry of Environment of Korea