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ISSN Online: 2377-424X

ISBN Print: 0-89116-909-1

International Heat Transfer Conference 9
August, 19-24, 1990 , Jerusalem, Israel

A MODEL FOR ASSESSING THE EFFECTS OF BERMS ON THE HEAT LOSS FROM PARTIALLY BURIED HEAT STORAGE TANKS

Get access (open in a dialog) DOI: 10.1615/IHTC9.640
pages 169-174

Resumo

Complete analysis of the heat flow from buried seasonal thermal storage tanks is exceedingly complex. In order to provide designers with a usable and rational basis upon which an initial design choice with respect to berming can be made, a model has been developed to describe the heat flows in the soil regime surrounding large, cylindrical, partially buried seasonal heat storage tanks having soil bermed against the above grade portion of the tank wall. The model assumes steady state conditions, and that the soil has homogeneous and isotropic thermal properties. A berm-factor expression (which indicates the increase in tank heat loss rate occurring when an inground tank is repositioned at a higher level and bermed) is developed analytically using a simplified heat flow model, and evaluated for several berm configurations, insulation widths and soil conductivities. The simplification of the two-dimensional heat flow field is described in detail. The predictions obtained using the new model are found to exhibit qualitative similarities with the predictions obtained using numerical and empirical approaches. This model can provide comparative performance assessments approximately representative of typical conditions for storage use.