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Measurement of a heated surface temperature using a high-speed infrared camera during critical heat flux enhancement by a honeycomb porous plate in a saturated pool boiling of a nanofluid

Mori, Shoji and Mt Aznam, Suazlan and Yanagisawa, Ryuta and Yokomatsu, Fumihisa and Okuyama, Kunito (2019) Measurement of a heated surface temperature using a high-speed infrared camera during critical heat flux enhancement by a honeycomb porous plate in a saturated pool boiling of a nanofluid. Heat Transfer Engineering. ISSN 0145-7632 E-ISSN 1521-0537 (In Press)

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Abstract

This article presents an experimental study to investigate the critical heat flux (CHF)enhancement mechanism using honeycomb porous plate (HPP). The CHF enhanced significantly with combination of the HPP and nanofluid, up to 3.2MW/m2 at maximum compared to a plain surface, 1.0MW/m2. The mechanism by which the CHF is improved in this system was elucidated by measuring the temperature of the heated surface using an indium tin oxide (ITO) heater and a high-speed infrared camera. The pool boiling experiment of water and nanofluid is performed under saturated temperature and atmospheric pressure conditions. The CHF values obtained using ITO heater is in good agreement with a conventional CHF pool boiling experiment with HPP attachment. High-speed infrared camera is analyzed to understand the behavior of local temperature at various locations over time. It is observed at the burnout condition, the highest average temperature is occurred at the intersection of HPP wall. Moreover, the reversible dry spots were initiated in the cell part of the HPP, and small dry spots coalesced into a growth of large irreversible dry out that leads to burnout. Further CHF enhancement could be realized if the initiation of the dryout region could be suppressed.

Item Type: Article (Journal)
Additional Information: 8062/73198
Uncontrolled Keywords: critical heat flux, honeycomb porous plate
Subjects: Q Science > QD Chemistry
T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Science
Depositing User: Dr. Suazlan Mt Aznam
Date Deposited: 12 Jul 2019 16:32
Last Modified: 29 Sep 2019 23:01
URI: http://irep.iium.edu.my/id/eprint/73198

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