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 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.

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

Rheological and thermal characteristics of a two phase hydrogel system for potential wound healing applications

2010 ◽  
Vol 45 (11) ◽  
pp. 2884-2891 ◽  
Author(s):  
Thomas J. Smith ◽  
James E. Kennedy ◽  
Clement L. Higginbotham
Keyword(s):  
Wound Healing ◽  
Thermal Characteristics ◽  
Two Phase ◽  
Hydrogel System

Thermal Characteristics of a Circular Finned Thermosyphon Using Different Working Fluids

2014 ◽  
Vol 575 ◽  
pp. 322-328 ◽  
Author(s):  
Narayanan Alagappan ◽  
Narayanan Karunakaran
Keyword(s):  
Experimental Study ◽  
Ethylene Glycol ◽  
Thermal Resistance ◽  
Thermal Performance ◽  
Heat Input ◽  
Base Fluid ◽  
Thermal Characteristics ◽  
Working Fluid ◽  
Two Phase ◽  
Evaporation And Condensation

The two-phase closed thermosyphon (TPCT), which is essentially a gravity-assisted wickless heat pipe, utilizes the evaporation and condensation of the working fluid inside the TPCT to transport heat. This experimental study was carried out to understand the thermal performance of circular finned thermosyphon using nanofluid with alcohol and was analyzed, compared with alcohol and base fluid DI water. The concentration of nanoparticle used in this setup was 110mg/lit of TiO2combined with 0.2 ml of ethylene glycol. The heat input (Q) were 10W, 12W, 14 W and 16 W and the orientation 30°, 45°, 60° and 90°.The results demonstrate that TiO2nanofluid with 0.2 ml of ethylene glycol improves the performance through reduction in thermal resistance by 85.86%.

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