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Heat Transfer Performance of the Duct with Various Cross Section in Heat Exchanger  

Kim, Eung-Bok (Department of Mechanical Engineering, University of Incheon)
Han, Min-Sub (Department of Mechanical Engineering, University of Incheon)
Kim, Nae-Hyun (Department of Mechanical Engineering, University of Incheon)
Won, Tae-Yeon (Department of Mechanical Engineering, University of Incheon)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.22, no.5, 2010 , pp. 322-327 More about this Journal
Abstract
It is a critical task to keep the ventilation system working in a proper and efficient manner in large multi-storey buildings, and the enthalpy exchanger is becoming an increasingly important part of the ventilation system by playing the function of channeling heat and moisture. We present a computational study on the heat transfer performance of the cross-flow enthalpy exchanger, which is in large use for residential buildings. The ducts are considered whose cross-sectional shapes resemble triangle and longitudinal centerline a cosine wave. It is shown that, as the cross-sectional shape departs from triangle, the heat transfer performance of the duct tends to deteriorate. Also, applying the wave-like shape to the longitudinal centerline of the duct increases the rate of heat transfer and the applied pressure-gradient at the same time. The origin of the performance variations in the cases considered are quantitatively analyzed and discussed.
Keywords
Enthalpy Exchanger; Nusselt Number; Duct; Triangle; Wave;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Webb, R. L. and Kim, N. H., 2005, Principles of enhanced heat transfer, Taylor and Francis Pub.
2 Kim, N. H., Cho, J. P., Song, G. S. and Kim, D. H., 2008, Performance of a Plate-Type enthalpy exchanger made of papers having different properties, J. of SAREK, Vol. 20, No. 8, pp. 547-555.   과학기술학회마을
3 Han, S. P., Park, T. K. and Kim, N. H., 2005, Thermal performance analysis of the plate-type paper enthalpy heat exchanger, KSME Spring Conference, pp. 2215-2219.
4 Yoo, S. Y., Kim, J. H., Chung, M. H. and Jie, M. S., 2008, A study on the performance prediction of paper heat exchanger for exhaust heat recovery, J. of SAREK, Vol. 20, No. 6, pp. 372-380.   과학기술학회마을
5 Shah, R. K. and London, A. L., 1978, Laminar flow forced convection in ducts, Academic Press.