Zhang, Q, Lin, G, Shen, X et al. (2 more authors) (2020) Visualization study on the heat and mass transfer in the evaporator-compensation chamber of a loop heat pipe. Applied Thermal Engineering, 164. 114472. ISSN 1359-4311
Abstract
To visually analyze the flow and heat transfer characteristics of the working fluid in a loop heat pipe (LHP), the evaporator-compensation chamber (CC) was designed as a half-sectioned cylindrical structure sealed with a glass window. Using acetone as the working fluid, visualization experiments were performed under different heat loads and tilt angles. The vapour-liquid distribution in the evaporator-CC coupling structure and the temperature variation characteristics of the LHP system were investigated at three tilt angles of the evaporator-CC coupling structure. According to the experimental results including the startup and steady-state operation, some important conclusions have been drawn as summarized below: (1) with the subcooled liquid outflow from the bayonet tube, the vapour-liquid interface in the evaporator-CC coupling structure rises when the heat load is applied to the evaporator; (2) the bubble generation inside the porous wick becomes more intense with an increased heat load, and there are various bubble movement patterns at different tilt angles; (3) the temperature fluctuation of the LHP system is closely related to the oscillation of the vapour-liquid interface in the evaporator core.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Elsevier Ltd. This is an author produced version of a paper published in Applied Thermal Engineering. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Loop heat pipe; Evaporator; Tilt angle; Visualization; Vapor-liquid; interface |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 Mar 2020 13:37 |
Last Modified: | 30 Sep 2020 00:39 |
Status: | Published |
Publisher: | Elsevier BV |
Identification Number: | 10.1016/j.applthermaleng.2019.114472 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:158028 |
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Licence: CC-BY-NC-ND 4.0