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Advances in Heat Transfer Engineering

ISSN:
1-56700-198-1 (Print)

DESCRIPTION OF TUBE BUNDLE HEAT TRANSFER IN FOAM FLOW

Jonas Gylys
Department of Thermal and Nuclear Energy, Kaunas University of Technology, K.Donelaièio str. 20, LT-44239 Kaunas, Lithuania

Mindaugas Jakubcionis
Kaunas University of Technology, Donelaicio str.20, LT-3000 Kaunas, Lithuania

Stasys Sinkunas
Department of Thermal and Nuclear Energy, Kaunas University of Technology, Donelaicio 20, LT-44239 Kaunas, Lithuania

Tadas Zdankus
Energy Technology Institute, Kaunas University of Technology, K. Donelaicio 20-212 LK, LT-44239 Kaunas, Lithuania

Abstract

The heat transfer processes of heat exchanger were investigated experimentally. This model consists of three vertical lines of horizontal tubes with five tubes in each. Tubes were arranged in a staggered order. Heat transfer of staggered bundle of tubes to upward statically stable foam How was investigated experimentally. Heat transfer dependence on specific gas and liquid velocity was determined. Dependence of volumetric void fraction of foam on heat transfer was investigated also. Heat transfer rate dependence on tube position in the line of tube bundle was investigated experimentally. Experimental results of heat transfer of bundle of lubes to upward statically stable foam Flow were generalized using dependence between Nusselt and Reynolds numbers.