Boiling heat transfer of a liquid film formed in the evaporator of a two-phase closed thermosiphon. Part 1

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Heat Transfer - Japanese Research; (United States)

OSTI ID:5049481

Ouchi, M; Takamori, Y; Yamakawa, N; Izumi, M ^[1]; Takeyama, T ^[2]

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1. Faculty of Engineering, Iwate Univ. (JP)
2. Faculty of Engineering, Tohoku Univ. (JP)

The heat-transfer mechanism of the evaporator of a thermosiphone-type heat pipe is considered in this paper. The rate and the coefficient of heat transfer of nine test pieces were measured. The amount of the working fluid and the surface structures were different for all the test pieces. The occurrence of nucleate boiling in both the liquid film and the pool side was confirmed. As a result of the nucleate boiling in the liquid film, and because the heat-transfer performance is dependent on the nucleate boiling heat transfer, the capability of the thermosiphone- type heat pipe has improved; however, the existence of dryout had a negative effect on the performance of the system.

• OSTI ID: 5049481
• Journal Information: Heat Transfer - Japanese Research; (United States), Journal Name: Heat Transfer - Japanese Research; (United States) Vol. 19:5; ISSN 0096-0802; ISSN HTJPA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
BOILING
DATA
ENERGY TRANSFER
EXPERIMENTAL DATA
FLUID FLOW
FLUIDS
HEAT PIPES
HEAT TRANSFER
INFORMATION
LIQUIDS
NUCLEATE BOILING
NUMERICAL DATA
PHASE TRANSFORMATIONS
THERMODYNAMICS
THERMOSYPHONS
TWO-PHASE FLOW
WORKING FLUIDS