American Journal of Applied Sciences | |
Effect of Evaporator Section Lengths and Working Fluids on Operational Limit of Closed Loop Oscillating Heat Pipes with Check Valves (CLOHP/CV) | Science Publications | |
S. Rittidech1  P. Tammasaeng1  P. Meena1  | |
关键词: Closed-looped oscillating heat-pipe; check valves; operational limit; critical heat flux; | |
DOI : 10.3844/ajassp.2009.133.136 | |
学科分类:自然科学(综合) | |
来源: Science Publications | |
【 摘 要 】
This research aims to the effect of evaporator section lengths and working fluids on operational limit of closed loop oscillating heat pipes with check valves (CLOHP/CV) with R123 Ethanol and Water were used as the working fluids. A set of CLOHP/CV was made of copper tubes in combination of following dimension: 1.77 mm inside diameter: 10 turns: 5, 10 and 15 cm equal lengths for evaporator, adiabatic and condenser sections. The working fluid was filled in the tube at the filling ratio of 50%. The evaporator section was given heat by heater while the condenser section was cooled by volume water in a cold bath. The adiabatic section was properly insulated. In the test operation. Which the temperature at the adiabatic section was controlled at 60°C in steady-state condition. From The obtained results obtained, it could be concluded as follows. When the evaporator lengths increased from 5 cm to 10 and 15 cm the critical heat transfer flux decreased. There was working fluids change from R123 to Ethanol and water the critical heat flux decreased.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201911300767381ZK.pdf | 157KB | download |