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Flow Boiling in Minigap in the Reversed Two-Phase Thermosiphon Loop

Abstract

The paper presents the results of experimental investigations of a model of a heat exchanger featuring a minigap, which is perceived as an evaporator for an inverted thermosiphon. The system works with a single component test fluid. The tested evaporator generates pumping power in the test loop in a way similar to the mammoth pump. The tests regarded a module of the heat exchanger, consisting of a hot leg and a cold leg with the width by the length of 0.1 × 0.2 m, heated by a uniform heat flux. In the tests, the minigaps of 1, 2 and 3 mm were formed. Two fluids, namely, distilled water and ethanol, were tested in the facility. Two-phase flow structures for both working fluids and various operational parameters, together with comprehensive visualization material, are presented. The specifics of pressure changes and its influence on operating parameters and flow structure are discussed.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
ENERGIES no. 12, pages 1 - 22,
ISSN: 1996-1073
Language:
English
Publication year:
2019
Bibliographic description:
Klugmann M., Dąbrowski P., Mikielewicz D.: Flow Boiling in Minigap in the Reversed Two-Phase Thermosiphon Loop// ENERGIES -Vol. 12,iss. 17 2019, s.1-22
DOI:
Digital Object Identifier (open in new tab) 10.3390/en12173368
Bibliography: test
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Sources of funding:
Verified by:
Gdańsk University of Technology

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