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First Thermal and Fluids Engineering Summer Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

EXPERIMENTAL STUDY OF THE BOILING HEAT TRANSFER IN A SMALL CHANNEL

DOI: 10.1615/TFESC1.mph.013053
pages 1807-1810

Ahmed Kouidri
Laboratory of Multiphase Transport and Porous Media (LTPMP), Faculty of Mechanical and Process Engineering (FGMGP)/USTHB, BP. 32, El Alia, Algiers, Algeria

Brahim Madani
Laboratory of Multiphase Transport and Porous Media (LTPMP), Faculty of Mechanical and Process Engineering (FGMGP)/USTHB, BP. 32, El Alia, Algiers, Algeria

B. Roubi
Laboratory of Multiphase Transport and Porous Media (LTPMP), Faculty of Mechanical and Process Engineering (FGMGP)/USTHB, BP. 32, El Alia, Algiers, Algeria


KEY WORDS: Boiling, Heat transfer, Plate heat exchanger, two phase flow

Abstract

In the present work, the flow boiling heat transfer is experimentally investigated in a small plate heat exchanger with dimensions equal to 0.05*0.025*0.005 m3. The working fluid is n-pentane which is chosen for its low boiling point (36 ° C at atmospheric pressure). The variables are velocity in the range from 0.015 m/s to 0.06 m/s and the boiling heat flux with values between 9 and 137 kW/m2. The wall superheat and exit vapor quality are presented as dependent variables. As results, we present a new method to predict the flow pattern on the basis of the temperature fluctuations. In other hand, the comparison with the literature shows a good agreement with Gungor-Winterton and Jens-Lotte correlations.

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