Dimensioning of Spiral Heat Exchangers to Give Minimum Costs

[+] Author and Article Information
A. B. Jarzębski

Polish Academy of Sciences, Institute of Chemical Engineering, Gliwice, Poland

J. Heat Transfer 106(3), 633-637 (Aug 01, 1984) (5 pages) doi:10.1115/1.3246727 History: Received February 03, 1984; Online October 20, 2009


Simple expressions are presented for calculating approximate dimensions of spiral heat exchangers to give minimum annual cost of heating surface plus energy required to pump the fluids. The case of spiral–spiral flow is considered. Equations are derived for exchangers with and without distance holders between plate strips and for two sets of input data: (i) both volumetric fluid flow rates V1 , V2 and all inlet and appropriate outlet temperatures are given; (ii) the flow rate of the process fluid V1 and the effectiveness e1 are imposed, while the flow rate of the working fluid V2 is an additional variable subject to optimization. For the latter case, appropriate optimum values of V2 can readily be found from the graphs provided.

Copyright © 1984 by ASME
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