Cover Image

Process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement

Various surface modifications controlling wettability and wickability have effectively enhanced the critical heat flux (CHF) in saturated pool boiling. Among them, this paper focuses on the CHF enhancement using a honeycomb porous plate (HPP). The HPP, which is commercially available, was generally...

Full description

Saved in:
Bibliographic Details
Main Authors: Mt Aznam, Suazlan, Maruoka, Naru, Imai, Ryosuke, Mori, Shoji
Format: Article
Language:English
Published: The Japan Society of Mechanical Engineers and The Heat Transfer Society of Japan 2021
Subjects:
TA401 Materials of engineering and construction
TJ163.26 Energy conservation
TN799.5 Nonmetallic minerals
TP155 Chemical engineering
Online Access:http://irep.iium.edu.my/93149/7/93149_Process%20of%20liquid%20supply%20to%20heated%20surface.pdf
http://irep.iium.edu.my/93149/
https://www.jstage.jst.go.jp/article/jtst/16/3/16_2021jtst0041/_article/-char/en
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.iium.irep.93149
record_format dspace
spelling my.iium.irep.931492021-10-20T04:12:38Z http://irep.iium.edu.my/93149/ Process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement Mt Aznam, Suazlan Maruoka, Naru Imai, Ryosuke Mori, Shoji TA401 Materials of engineering and construction TJ163.26 Energy conservation TN799.5 Nonmetallic minerals TP155 Chemical engineering Various surface modifications controlling wettability and wickability have effectively enhanced the critical heat flux (CHF) in saturated pool boiling. Among them, this paper focuses on the CHF enhancement using a honeycomb porous plate (HPP). The HPP, which is commercially available, was generally used to filter exhaust gases from combustion engines, and has micron-order pores and millimeter-order holes which is called as a “cell”. Once an HPP was installed on the heated surface, the CHF in saturated pool boiling of water was improved more than approximately three times compared with a bare surface. The enhancement may be caused by: (1) the liquid supply due to capillarity, (2) liquid flowing down through the cells of an HPP due to gravity onto the heated surface, and (3) the release of vapor generated through the cells. However, the liquid supply process to heated surface due to (1) and (2) has not been clarified yet. Therefore, it is necessary to elucidate the detailed liquid supply mechanism for further CHF enhancement. In the present paper, two separate sets of experiments have been designed to investigate the liquid supply effect to the heated surface independently, namely, (1) automatic liquid supply due to capillary action by the porous part and (2) bulk liquid flowing down through the cells of an HPP. In summary, the measured values from the experiment extracting the liquid supply due to capillarity were in good agreement with the proposed capillary limit model. Moreover, for the high heat flux region (more than 3.5 MW/m2), the liquid supply due to the capillary force is dominant in enhancing the CHF. It was concluded that the keys to further CHF enhancement were the promotion of gas-liquid circulation based on the capillary limit model and improvement of wickability of the heated surface. The Japan Society of Mechanical Engineers and The Heat Transfer Society of Japan 2021 Article PeerReviewed application/pdf en http://irep.iium.edu.my/93149/7/93149_Process%20of%20liquid%20supply%20to%20heated%20surface.pdf Mt Aznam, Suazlan and Maruoka, Naru and Imai, Ryosuke and Mori, Shoji (2021) Process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement. Journal of Thermal Science and Technology, 16 (3). pp. 1-17. ISSN 1880-5566 E-ISSN 1880-5566 https://www.jstage.jst.go.jp/article/jtst/16/3/16_2021jtst0041/_article/-char/en 10.1299/jtst.2021jtst0041
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic TA401 Materials of engineering and construction
TJ163.26 Energy conservation
TN799.5 Nonmetallic minerals
TP155 Chemical engineering
spellingShingle TA401 Materials of engineering and construction
TJ163.26 Energy conservation
TN799.5 Nonmetallic minerals
TP155 Chemical engineering
Mt Aznam, Suazlan
Maruoka, Naru
Imai, Ryosuke
Mori, Shoji
Process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement
description Various surface modifications controlling wettability and wickability have effectively enhanced the critical heat flux (CHF) in saturated pool boiling. Among them, this paper focuses on the CHF enhancement using a honeycomb porous plate (HPP). The HPP, which is commercially available, was generally used to filter exhaust gases from combustion engines, and has micron-order pores and millimeter-order holes which is called as a “cell”. Once an HPP was installed on the heated surface, the CHF in saturated pool boiling of water was improved more than approximately three times compared with a bare surface. The enhancement may be caused by: (1) the liquid supply due to capillarity, (2) liquid flowing down through the cells of an HPP due to gravity onto the heated surface, and (3) the release of vapor generated through the cells. However, the liquid supply process to heated surface due to (1) and (2) has not been clarified yet. Therefore, it is necessary to elucidate the detailed liquid supply mechanism for further CHF enhancement. In the present paper, two separate sets of experiments have been designed to investigate the liquid supply effect to the heated surface independently, namely, (1) automatic liquid supply due to capillary action by the porous part and (2) bulk liquid flowing down through the cells of an HPP. In summary, the measured values from the experiment extracting the liquid supply due to capillarity were in good agreement with the proposed capillary limit model. Moreover, for the high heat flux region (more than 3.5 MW/m2), the liquid supply due to the capillary force is dominant in enhancing the CHF. It was concluded that the keys to further CHF enhancement were the promotion of gas-liquid circulation based on the capillary limit model and improvement of wickability of the heated surface.
format Article
author Mt Aznam, Suazlan
Maruoka, Naru
Imai, Ryosuke
Mori, Shoji
author_facet Mt Aznam, Suazlan
Maruoka, Naru
Imai, Ryosuke
Mori, Shoji
author_sort Mt Aznam, Suazlan
title Process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement
title_short Process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement
title_full Process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement
title_fullStr Process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement
title_full_unstemmed Process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement
title_sort process of liquid supply to heated surface by a honeycomb porous plate for critical heat flux enhancement
publisher The Japan Society of Mechanical Engineers and The Heat Transfer Society of Japan
publishDate 2021
url http://irep.iium.edu.my/93149/7/93149_Process%20of%20liquid%20supply%20to%20heated%20surface.pdf
http://irep.iium.edu.my/93149/
https://www.jstage.jst.go.jp/article/jtst/16/3/16_2021jtst0041/_article/-char/en
_version_ 1715189409596309504
score 13.211869

Similar Items