Natural Convection from a Horizontal Tube Heat Exchanger Immersed in a Tilted Enclosure-Reference-Cited by-同舟云学术

Natural Convection from a Horizontal Tube Heat Exchanger Immersed in a Tilted Enclosure

Published:2003-01-27 Issue:1 Volume:125 Page:67-75
ISSN:0199-6231
Container-title:Journal of Solar Energy Engineering
language:en
Short-container-title:

Author:

Liu Wei¹,Davidson Jane H.¹,Kulacki F. A.¹,Mantell Susan C.¹

Affiliation:

1. Department of Mechanical Engineering, University of Minnesota, 111 Church St. S.E., Minneapolis, MN 55455

Abstract

Heat transfer rates of a single horizontal tube immersed in a water-filled enclosure tilted at 30 deg are measured. The results serve as a baseline case for a solar water heating system with a heat exchanger immersed in an integral collector storage. Experiments are conducted for isothermal and stratified enclosures with both adiabatic and uniform heat flux boundary conditions. Natural convection flow in the enclosure is interpreted from measured water temperature distributions. Formation of an appropriate temperature difference that drives natural convection is determined. Correlations for the overall heat transfer coefficient in terms of the Nusselt and Rayleigh numbers are reduced to the form NuD=0.675RaD0.25 for 9×105⩽RaD⩽4×107.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

Link

http://asmedigitalcollection.asme.org/solarenergyengineering/article-pdf/125/1/67/5712872/67_1.pdf

Reference26 articles.

1. Arora, S., Davidson, J., Burch, J., and Mantell, S., 2001, “Thermal Penalty of an Immersed Heat Exchanger in Integral Collector Storage Systems,” ASME J. Sol. Energy Eng., 123(3), pp. 180–186.

2. Liu, W., Davidson, J. H., and Kulacki, F. A., 2001, “Natural Convection from a Single Tube Immersed in a Tilted Thin Enclosure,” Proc. of Int. Conf. on Energy Conversion and Application (ICECA’2001), Huazhong Univ. of Science and Technology Press, Wuhan, China, 1, pp. 408–413.

3. Thornton, J., Arora, S., Davidson, J. H., Burch, J., Christensen, C., and Barker, G., 2000, “Modeling Advances in Low-Cost Integral Collector Storage Solar Domestic Hot Water Systems,” Proc. of SOLAR 2000, Madison, WI, pp. 255–260.

4. Morgan, V. T. , 1975, “The Overall Convective Heat Transfer from Smooth Circular Cylinders,” Adv. Heat Transfer, 11, pp. 199–264.

5. Churchill, S. W., and Chu, H. H. S., 1975, “Correlating Equations for Laminar and Turbulent Free Convection from a Horizontal Cylinder,” Int. J. Heat Mass Transf., 18, No. 9, pp. 1049–1053.

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