To enhance the reliability of in-vessel retention techniques during a nuclear power plant hazard, the viability of seawater as a coolant to flood the reactor pressure vessel was investigated. Pool boiling of distilled water, 3.5 wt. % artificial seawater, and 7.0 wt. % highly concentrated artificial seawater was performed on a 30-mm-diameter Cu bare surface (BS) with a honeycomb porous plate (HPP). The results revealed an increase in the critical heat flux (CHF) with both artificial seawater solutions, on the BS, when compared with distilled water. The improvement of surface wettability by sea salt deposits was assumed as the main reason for the improvement. A significant enhancement in the CHF was achieved with distilled water and 3.5 wt. % artificial seawater owing to the capillary properties of HPP and the separation of the liquid and vapor phases near the heated surface. When the HPP was employed with 7.0 wt. % highly concentrated artificial seawater, the performance did not improve. Although experiments with a honeycomb solid plate suggested that a high concentration of sea salt can clog the micropores in the HPP walls, resulting in loss of its capillary properties, highly concentrated artificial seawater still presented a better performance than distilled water in all cases investigated.
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May 2020
Research Article|
May 04 2020
Effect of honeycomb porous plate on critical heat flux in saturated pool boiling of highly concentrated artificial seawater
Special Collection:
Selected Papers from the 30th International Symposium on Transport Phenomena
Wilton Fogaça
;
Wilton Fogaça
1
Department of Chemical Engineering Science, Yokohama National University
, 9-1 Tokiwadai, Hodogaya, Yokohama, Kanagawa 240-8501, Japan
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Shoji Mori (昌司森)
Shoji Mori (昌司森)
a)
2
Department of Mechanical Engineering, Kyushu University
, 744, Motooka, Nishi, Fukuoka 819-0395, Japan
a)Author to whom correspondence should be addressed: morisho@mech.kyushu-u.ac.jp
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a)Author to whom correspondence should be addressed: morisho@mech.kyushu-u.ac.jp
Note: This paper is part of the Special Issue from the 30th International Symposium on Transport Phenomena.
Physics of Fluids 32, 053302 (2020)
Article history
Received:
January 04 2020
Accepted:
April 10 2020
Citation
Wilton Fogaça, Shoji Mori; Effect of honeycomb porous plate on critical heat flux in saturated pool boiling of highly concentrated artificial seawater. Physics of Fluids 1 May 2020; 32 (5): 053302. https://doi.org/10.1063/1.5144438
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