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International Heat Transfer Conference 10

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

SATURATED UP-FLOW BOILING IN A VERTICAL INTERNAL THREE-DIMENSIONAL FIN-TUBE AT MODERATE PRESSURES

Hong-Ji Zhang
Department of Heat Power Engineering, Chongqing University, Chongqing, 630044 People's Republic of China

Si-Li Shao
Department of Heat Power Engineering Chongqing University, Chongqing, CHINA

Ming-Wei Tong
Department of Heat Power Engineering Chongqing University, Chongqing, CHINA

DOI: 10.1615/IHTC10.1500
pages 587-592

Abstract

An experimental study has been carried out on saturated up-flow boiling of water in a vertical internal three-dimensional fin-tube at moderate pressures. The ranges of the important experimental parameters are as follows: pressure p =2.6 ~ 5.6 MPa; mass flux ("mass velocity") G =280 ~ 740 kg/m2 s; heat flux q = 290 ~ 910 kW/m2. The variation of the steam-water two-phase frictional pressure drop and boiling heat transfer characteristics with these parameters has been reported and the results are compared with those of a smooth tube. The corresponding correlations for the frictional pressure drop and the heat transfer coefficient have been established.

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