| Title |
Analysis of Thermal Control Characteristics ofVCHP by the Charging Mass of Non-Condensible Gas |
| Keywords |
Variable conductance heat pipe ; 가변전열 히트파이프 ; Non-condensible gas ; 불응축가스 ; Mass fraction ; 질량분률 ; Mesh wick ; 메쉬 윅 |
| Abstract |
This study has been performed to investigate the thermal performance of vari-able conductance heat pipe(VCHP) with meshed wick. The length of condenser portion in a VCHP is varied by the expansion of inert gas with the operation temperature, and the heat transport capacity is thus varied with the operating temperature. In this study, numerical eva-luation of the VCHP is made for the thermal performance of VCHP, based on the diffusion model of inert gas. Water is used as a working fluid and nitrogen as a control inert gas in the copper tube. As a result, the thermal performance of VCHP has been compared with that of constant conductance heat pipe(CCHP) according to the variation of operation temperature. Maximum heat transport capacity of VCHP is mainly presented for operation temperature and the variation of operation temperature is also presented for heat transfer rate of VCHP. |