Non-Uniform Three-Dimensional Pulsating Heat Pipe for Anti-Gravity High-Flux Applications

被引:14
|
作者
Tseng, Chih-Yung [1 ,2 ]
Yang, Kai-Shing [3 ]
Wang, Chi-Chuan [2 ]
机构
[1] Ind Technol Res Inst, Green Energy & Environm Res Labs, 195,Sec 4,Chung Hsing Rd, Hsinchu 310, Taiwan
[2] Natl Chiao Tung Univ, Fac Engn, Dept Mech Engn, EE474,1001 Univ Rd, Hsinchu 300, Taiwan
[3] Natl Chin Yi Univ Technol, Fac Engn, Deparment Refrigerat Air Conditioning & Energy En, 51,Sec 2,Chung Shan Rd, Taichung 411, Taiwan
关键词
pulsating heat pipe; anti-gravity; compact arrangement; thermal resistance ratio; THERMAL PERFORMANCE; DESIGN;
D O I
10.3390/en13123068
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This study proposes a novel high-flux pulsating heat pipe that can lift the major constraint of the conventional pulsating heat pipe (PHP) which is unable to function properly upon anti-gravity operations. The proposed PHP introduces additional unbalance force via uneven tube diameter/geometry in the adiabatic sections to tailor the problem in anti-gravity operation. The design contains a three-dimensional configuration circuitry with compact arrangement tubes on the evaporator and condenser. Through this design, the non-uniform three-dimensional pulsating heat pipe (3D-PHP) manipulates the uneven inner diameters of the adiabatic sections to form uneven vapor/liquid distributions in the adiabatic sections to yield a unitary flow pattern that is able to withstand a much higher input power. The present PHP uses methanol as working fluid, with 38% volumetric filling ratio, and has a high-flux of 22.9 W/cm(2)and a low the thermal resistance ratio (Ranti-gravity/Rgravity-assisted) of 1.05 when the input power is 800 W. Both the heat flux and thermal resistance ratio for the proposed design are far better than the existing literature.
引用
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页数:16
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