TY - JOUR
T1 - Enhancement of the critical heat flux in saturated pool boiling using honeycomb porous media
AU - Mori, Shoji
AU - Okuyama, Kunito
N1 - Funding Information:
This study was supported in part by the Kurata Memorial Hitachi Science and Technology Foundation.
PY - 2009/10
Y1 - 2009/10
N2 - The enhancement of the critical heat flux by the attachment of porous plates on the heated surface is investigated experimentally under the saturated pool boiling conditions. In the case that a honeycomb porous plate is applied, the CHF increases up to 2.51 MW/m2, which is approximately 2.5 times that of a plain surface (1.01 MW/m2). It is found that the keys for the enhancement of the CHF are the automatic liquid supply due to capillary action and the reduction of the vapor counterflow resistance due to separation of liquid and vapor flow by the honeycomb porous structure. A simplified one-dimensional capillary-limit model, in which the pressure drop due to liquid and vapor flow is balanced by capillary force, is applied to predict the CHF. The calculated results are compared with the observed ones.
AB - The enhancement of the critical heat flux by the attachment of porous plates on the heated surface is investigated experimentally under the saturated pool boiling conditions. In the case that a honeycomb porous plate is applied, the CHF increases up to 2.51 MW/m2, which is approximately 2.5 times that of a plain surface (1.01 MW/m2). It is found that the keys for the enhancement of the CHF are the automatic liquid supply due to capillary action and the reduction of the vapor counterflow resistance due to separation of liquid and vapor flow by the honeycomb porous structure. A simplified one-dimensional capillary-limit model, in which the pressure drop due to liquid and vapor flow is balanced by capillary force, is applied to predict the CHF. The calculated results are compared with the observed ones.
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U2 - 10.1299/kikaib.75.758_1896
DO - 10.1299/kikaib.75.758_1896
M3 - Article
AN - SCOPUS:73949118566
VL - 75
SP - 1896
EP - 1902
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 758
ER -