Heat transfer performance of a lubricant-infused thermosyphon at various filling ratios

Lv, F. Y., Zhang, P., Orejon, D., Askounis, A. and Shen, B. (2017) Heat transfer performance of a lubricant-infused thermosyphon at various filling ratios. International Journal of Heat and Mass Transfer, 115 (Part A). pp. 725-736. ISSN 0017-9310

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Abstract

The effect of the filling ratio (25% ≤ FR ≤ 98%) on the heat transfer performance of a novel two-phase closed thermosyphon (TPCT) combined with a superhydrophilic (SHi) evaporator and slippery lubricant-infused porous surface (SLIPS) condenser (TPCT-SHiSL) is systematically investigated in the present study. On the evaporator side, experimental results show that a different evaporation mechanism takes place dependent on the filling ratio, which has a strong impact on the overall heat transfer performance. Film evaporation plays a dominant role at the filling ratio of 25% and at the filling ratios of 40% and 70% at low heat flux. Nonetheless, film evaporation is gradually reduced and pool boiling becomes important at the filling ratios of 40% and 70% for moderate and high heat fluxes. Finally, pool boiling plays a dominant role for the TPCT-SHiSL at the filling ratio of 98%. In the case of the condenser, the condensation heat transfer of the SLIPS is reduced with increasing filling ratio. Balancing between the thermal resistance and heat transfer capacity, the TPCT-SHiSL at the filling ratio of 40% shows the best heat transfer performance.

Item Type: Article
Uncontrolled Keywords: boiling heat transfer,dropwise condensation,film evaporation,slips,superhydrophilic evaporator,condensed matter physics,mechanical engineering,fluid flow and transfer processes ,/dk/atira/pure/subjectarea/asjc/3100/3104
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Depositing User: LivePure Connector
Date Deposited: 17 Oct 2018 11:31
Last Modified: 20 Dec 2018 14:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/68572
DOI: 10.1016/j.ijheatmasstransfer.2017.07.062

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