Heat-transfer performance of a corrugated-tube thermosiphon. Part 1; Evaporator performance

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Heat Transfer - Japanese Research; (United States)

OSTI ID:6063117

Negishi, K ^[1]; Kaneko, K ^[2]; Matsuoka, T ^[3]; Hirashima, M; Nishikawa, Y; Taguchi, M ^[4]

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1. Tokyo Metropolitan Inst. of Technology (JP)
2. Univ. of Osaka Prefecture (JP)
3. Nissan Motor Co., Ltd. (JP)
4. Takuma Research and Development Co., Ltd. (JP)

Two-phase closed thermosiphons are highly efficient heat-transfer elements with applications in terrestrial heat-transport and heat-recovery systems. In this paper, a corrugated copper tube was used as the container of the thermosiphons and distilled water was used as the working fluid. The influences of the liquid charge ratio and inclination angle on the heat-transfer performance were studied. It was found that the optimum liquid charge ratio to evaporator volume is 40 percent and the maximum performance is obtained at an inclination angle of 30 degrees. A useful formula to calculate the heat-transfer coefficient in the evaporator has been derived.

• OSTI ID: 6063117
• Journal Information: Heat Transfer - Japanese Research; (United States), Journal Name: Heat Transfer - Japanese Research; (United States) Vol. 20:2; ISSN 0096-0802; ISSN HTJPA
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
320304 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CALCULATION METHODS
DESIGN
ENERGY TRANSFER
EQUIPMENT
EVAPORATORS
FLUID FLOW
FLUIDS
HEAT RECOVERY EQUIPMENT
HEAT TRANSFER
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PERFORMANCE TESTING
TESTING
THERMOSYPHONS
TUBES
TWO-PHASE FLOW
WATER
WORKING FLUIDS