scholarly journals The critical role of channel cross-sectional area in microchannel flow boiling heat transfer

2009 ◽  
Vol 35 (10) ◽  
pp. 904-913 ◽  
Author(s):  
Tannaz Harirchian ◽  
Suresh V. Garimella
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Flow Boiling ◽  
Critical Role ◽  
Cross Sectional Area ◽  
Microchannel Flow ◽  
Sectional Area ◽  
Cross Sectional ◽  
Flow Boiling Heat Transfer

Enhanced Flow Boiling Heat Transfer Using Radial Microchannels

2016 ◽  
Author(s):  
Alyssa Recinella ◽  
Ankit Kalani ◽  
Satish G. Kandlikar
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Performance ◽  
Flow Boiling ◽  
Cross Sectional Area ◽  
Working Fluid ◽  
Transfer Performance ◽  
Sectional Area ◽  
Cross Sectional ◽  
Flow Rates ◽  
Flow Cross

Flow boiling has the ability to remove high heat fluxes while maintaining a low wall superheat. Various researchers have developed enhanced microchannel geometries to improve the heat transfer performance of the system. Recently, a number of new studies have used the increasing flow cross-sectional area concept to overcome flow instabilities and record high CHF. In this work, a new geometry is experimentally investigated utilizing a radial cross-section, which provides the increasing fluid flow cross-sectional area in the flow direction. The flow boiling performance is studied using radial microchannels and water as the working fluid. Four different flow rates ranging from 120–400 mL/min are studied for this new geometry. Heat transfer performance (boiling curve and heat transfer coefficient) and pressure drop characteristics are discussed for all flow rates. Furthermore, the work is supported by high speed visualization of the bubble dynamics. The boiling performance obtained is compared to the existing data in the literature.

Experimental Study on the Effect of Stabilization on Flow Boiling Heat Transfer in Microchannels

2006 ◽  
Author(s):  
Wai Keat Kuan ◽  
Satish G. Kandlikar
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Flow Boiling ◽  
Flow Instabilities ◽  
Working Fluid ◽  
Inlet Temperature ◽  
Cross Sectional ◽  
Flow Configuration ◽  
Flow Boiling Heat Transfer ◽  
Boiling Process

The effect of flow instabilities on flow boiling heat transfer in microchannels is investigated using water as the working fluid. The experimental test section has six parallel rectangular microchannels with each having a cross sectional area of 1054 × 197 microns. Flow restrictors are introduced at the inlet of each microchannel to stabilize the flow boiling process and avoid the backflow phenomena. The mass flow rate, inlet temperature of water, and the electric current supplied to the resistive cartridge heater are controlled to provide quantitative heat transfer information. The results are compared with the unrestricted flow configuration.

scholarly journals Sea Water Flow Boiling Heat Transfer Involving Sea Salt Deposition: Role of Deposited Sea Salt

2019 ◽  
Vol 2019 (0) ◽  
pp. 0146
Author(s):  
Yasuo Koizumi ◽  
Shinichiro Uesawa ◽  
Ayako Ono ◽  
Mitsuhiko Shibata ◽  
Hiroyuki Yoshida
Keyword(s):  
Heat Transfer ◽  
Water Flow ◽  
Boiling Heat Transfer ◽  
Sea Water ◽  
Flow Boiling ◽  
Sea Salt ◽  
Salt Deposition ◽  
Flow Boiling Heat Transfer ◽  
Sea Salt Deposition
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