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

Michał Klugmann, Paweł Dąbrowski and Dariusz Mikielewicz
Additional contact information
Michał Klugmann: Department of Energy and Industrial Apparatus, Gdańsk University of Technology, 80-233 Gdańsk, Pomorskie, Poland
Paweł Dąbrowski: Department of Energy and Industrial Apparatus, Gdańsk University of Technology, 80-233 Gdańsk, Pomorskie, Poland
Dariusz Mikielewicz: Department of Energy and Industrial Apparatus, Gdańsk University of Technology, 80-233 Gdańsk, Pomorskie, Poland

Energies, 2019, vol. 12, issue 17, 1-22

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.

Keywords: evaporator; solar collector; minigeometry (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/17/3368/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/17/3368/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:17:p:3368-:d:262958

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().