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International Heat Transfer Conference 9

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

HEAT REMOVAL BY EVAPORATION OF VOLATILE COMPONENTS

Artur Steiff
Department of Chemical Engineering, University of Dortmund PO.B. 500 500, D-4600 Dortmund 50, FRG

Michael Nitsche
Department of Chemical Engineering, University of Dortmund PO.B. 500 500, D-4600 Dortmund 50, FRG

Paul-Michael Weinspach
Department of Chemical Engineering, University of Dortmund PO.B. 500 500, D-4600 Dortmund 50, FRG

DOI: 10.1615/IHTC9.3680
pages 51-56

要約

In this study the heat transfer between a continuous liquid phase and evaporating drop swarms is investigated. R 114 (1,2-dichlorotetrafluoroethane) is used as a volatile substance which is immiscible with the continuous water phase. Experiments were carried out in two columns with 0.14 m and 0.19 m inner diameter and a height of 4.3 m. The volume-specific heat transfer coefficient varies between 10 and 600 kW/(m3K). Experimental results show that the mass flow rate of R 114 and the temperature difference between the continuous phase and the evaporating drops are the main controlling parameters.
A mathematical description of the evaporation process is presented and its application is explained.

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