Numerical Simulation of the Charging of Liquid Storage Tanks: Comparison With Experiment

[+] Author and Article Information
M. F. Lightstone, G. D. Raithby, K. G. T. Hollands

Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1

J. Sol. Energy Eng 111(3), 225-231 (Aug 01, 1989) (7 pages) doi:10.1115/1.3268311 History: Received December 01, 1988; Revised April 01, 1989; Online November 11, 2009


The degree of thermal stratification maintained in hot water storage tanks has a significant impact on the performance of a solar energy system. This paper presents an axisymmetric finite volume model analysis of the charging of a tank with hot water, and compares the predictions with experimental results from the literature. The results show the capabilities and deficiencies of such a modeling technique for this type of problem. The importance of inlet fluid turbulence to tank destratification is demonstrated and inclusion of a simple turbulence model is found sufficient to yield good agreement with measurement. The model predictions also provide insight into when a simple one-dimensional plug flow model will be adequate. In addition, the model is used to evaluate the effect during charging of heat conduction in the tank wall on the temperature field in the fluid. Recommendations are made regarding future work on the development of detailed numerical codes for simulating the charging of liquid storage tanks.

Copyright © 1989 by ASME
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