초록

The operational characteristics of a VCHP in the various operation conditions were investigated. A water heat pipe including nitrogen gas as a non-condensable gas was designed and manufactured using a copper tube with 12.7㎜ diameter and 480㎜ length. Experimental data showed that the length of non-active zone mostly depend on the temperature of the vapor and the non-condensable gas. And the heat flow rate was negligible parameter at the same vapor temperature in the range of the experiment. As the vapor temperature increase and the non-condensable gas temperature decrease, the non active zone was increased. The calculated data by using the flat front model and the experimental results showed same tendency.

키워드

VCHP(가변전열 히트파이프), Non-Condensable Gas(불응축 가스), Heat Pipe(히트파이프), Flat Front Model(평면 선단 모델) Active Zone(활성영역)

참고문헌(6)open

  1. [단행본] Chi, S. W. / 1976 / Heat pipe theory and Practice / McGraw Hill

  2. [보고서] Mercus, B. D. / 1970 / Steady- State and Transient Performance of Hot Reservoir Gas-Controlled Heat Pipes

  3. [학술지] Marcus, B. D. / 1972 / Heat and Mass Transfer in the Vicinity of the Vapor- Gas Front in a Gas-Loaded Heat Pipe / ASME J. of Heat Transfer Trans. 94 (2) : 155 ~ 162

  4. [학술지] 박병규 / 2001 / 가스내장 히트파이프의 과도 열특성 해석 / 설비공학 논문집 13 (6) : 514 ~ 523

  5. [학술지] Rohani, A. R. / 1973 / Steady Two- Dimensional Heat and Mass Transfer in the Vapor-Gas Region of a Gas Loaded Heat Pipe / ASME J. of Heat Transfer Trans. 95 (4) : 377 ~ 382

  6. [학술지] Peterson, P. F. / 1989 / Numerical and Analytical Solution for Two-Dimensional Gas Distribution in Gas-Loaded Heat pipes / ASME J. of Heat Transfer Trans. 111 (4) : 598 ~ 604