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주상현(S.H. Joo),이영수(Y.S. Lee),박기호(G.H. Park) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
In this study, optimal design and test of flat-plate heat pipe were carried out in order to improve both thermal response and surface temperature uniformity of heating plate. Experimental results show that the thermal response of flat-plate heat pipe is faster than that of a conventional heating type ones along with less weight and cost. The surface temperature uniformity is also improved.
Mesh Wick형 가변전열 히트파이프의 열전달 성능에 관한 실험적 연구
박영식(Y.S. Park),변길성(G.S. Byon),서정세(J.S. Suh),박기호(K.H. Park),이기우(K.W. Lee) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Analysis and experiment are performed to investigate the thermal performance of a<br/> heat pipe with screen meshed wick. The heat pipe was designed in 200 screen meshs, 500 mm<br/> length and 12mm O.D tube of copper, water as working fluid and nitrogen as non-condensible gas.<br/> Heat pipe used in this study has evaporator, condenser and adiabatic section, respectively.<br/> Experimental data of wall temperature distribution along axial length is presented for heat transport<br/> capacity, condensor cooling water temperature change, degrees of an inclination angle, and operating<br/> temperature.
박영식(Y.S.Park),김동언(D.E.Kim),변길성(G.S.Byon),서정세(J.-S.Suh),이기우(K.-W.Lee),박기호(K.H.Park) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
The present study has been conducted to analytically investigate the thermal control performance of variable conductance heat pipe(VCHP) with axial grooves. The condenser por of the VCHP is occupied by a inert gas in which the concentration of gas is varied with the operation temperature due to the variation of inert gas concentration. In this study, numerical evaluation for the thermal control of the VCHP with axial grooves is made from the 1st order diffusion model that considers the diffusive expansion of inert gas by concentration gradient. Ammonia is used as a working fluid and Nitrogen as a control gas in the Aluminum tube. As a result, the thermal performance of VCHP based on diffusion model has been compared with that of VCHP from flat front model. Additionally, it is found that the concentration of inert gas is distributed in the condenser region of VCHP with axial grooves.