Modelling heat transfer with phase change phenomena in a spirally finned exchanger/evaporator
Chemical Engineering Transactions, ISSN: 2283-9216, Vol: 17, Page: 555-560
2009
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Conference Paper Description
In this study the overall heat transfer coefficient has been evaluated during the concentration of the industrial phosphoric acid from 28% to 54% in PO using a spirally finned exchanger/evaporator. Experiments have been performed on a pilot unit based on a two level factorial plan. The results obtained, show that within the experimental range, the flow rate of diluted phosphoric acid has a negligible effect on the heat transfer coefficient, while the pressure of heating steam has a predominant effect. The effects of the main operating parameters have thus been incorporated into a polynomial model expressing the overall heat transfer coefficient as a function of such parameters. Copyright © 2009, AIDIC Servizi S.r.l.
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