Influence of fill ratio on thermal characteristics of gravity assisted two phase closed thermosyphon

2021 ◽  
Author(s):  
Shanmuga Sundaram Anandan ◽  
Jagannathan Sundarababu ◽  
Rajesh Ravi ◽  
K. V. Shivaprasad
Keyword(s):  
Thermal Characteristics ◽  
Two Phase ◽  
Fill Ratio

scholarly journals Wicking and Thermal Characteristics of Micropillared Structures for Use in Passive Heat Spreaders

2011 ◽  
Author(s):  
Ram Ranjan ◽  
Abhijeet Patel ◽  
Suresh V. Garimella ◽  
Jayathi Y. Murthy
Keyword(s):  
Thin Film ◽  
Thermal Contact ◽  
Thermal Characteristics ◽  
Hydrodynamic Performance ◽  
Superior Performance ◽  
High Permeability ◽  
Two Phase ◽  
Thin Film Evaporation ◽  
Film Evaporation ◽  
Cooling Devices

The thermal and hydrodynamic performance of passive two-phase cooling devices such as heat pipes and vapor chambers is limited by the capabilities of the capillary wick structures employed. The desired characteristics of wick microstructures are high permeability, high wicking capability and large extended meniscus area that sustains thin-film evaporation. Choices of scale and porosity of wick structures lead to tradeoffs between the desired characteristics. In the present work, models are developed to predict the capillary pressure, permeability and thin-film evaporation rates of various micropillared geometries. Novel wicking geometries such as conical and pyramidal pillars on a surface are proposed which provide high permeability, good thermal contact with the substrate and large thin-film evaporation rates. A comparison between three different micropillared geometries — cylindrical, conical and pyramidal — is presented and compared to the performance of conventional sintered particle wicks. The present work demonstrates a basis for reverse-engineering wick microstructures that can provide superior performance in phase-change cooling devices.

Thermal characteristics of a two-phase composite

2016 ◽  
Vol 27 (3) ◽  
pp. 929-934 ◽  
Author(s):  
Hsiu-Ching Hsu ◽  
Wei-Hsing Tuan
Keyword(s):  
Thermal Characteristics ◽  
Two Phase

scholarly journals Thermal characteristics of double tube two-phase thermosyphon.

1991 ◽  
Vol 57 (534) ◽  
pp. 687-692 ◽  
Author(s):  
Kenji FUKUDA ◽  
Shu HASEGAWA ◽  
Tetsuya KONDOH ◽  
Kiyoshi NAKAGAWA ◽  
Shinya TAMURA ◽  
...  
Keyword(s):  
Thermal Characteristics ◽  
Two Phase

Thermal characteristics of air-water two-phase flow in a vertical annularly corrugated tube

2020 ◽  
Vol 31 ◽  
pp. 101605
Author(s):  
Yan Cao ◽  
Phong Thanh Nguyen ◽  
Kittisak Jermsittiparsert ◽  
Hafedh Belmabrouk ◽  
Sayer O. Alharbi ◽  
...  
Keyword(s):  
Two Phase Flow ◽  
Thermal Characteristics ◽  
Phase Flow ◽  
Two Phase ◽  
Corrugated Tube

scholarly journals Thermal characteristics of a two-phase closed thermosyphon with non-condensable gas.

1986 ◽  
Vol 52 (474) ◽  
pp. 663-671
Author(s):  
Masao TAKUMA ◽  
Saburo MAEZAWA ◽  
Akira TSUCHIDA
Keyword(s):  
Thermal Characteristics ◽  
Two Phase

Experimental study on the effect of fill ratio on an R744 two-phase thermosyphon loop

2016 ◽  
Vol 99 ◽  
pp. 302-312 ◽  
Author(s):  
Zhen Tong ◽  
Xiao-Hua Liu ◽  
Zhen Li ◽  
Yi Jiang
Keyword(s):  
Experimental Study ◽  
Two Phase ◽  
Fill Ratio
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