scholarly journals Experimental study on enhanced heat transfer during rapid cooling of modified and oxidized rods

2021 ◽  
pp. 108806
Author(s):  
Shikha A. Ebrahim ◽  
Ammar M. Bahman ◽  
Khaled Almutairi ◽  
Mohammad A. Alalaimi
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Enhanced Heat Transfer ◽  
Rapid Cooling

Experimental study on enhanced heat transfer of nanocomposite phase change materials

2019 ◽  
Vol 92 (3) ◽  
pp. 285-301 ◽  
Author(s):  
Wei Li ◽  
Yan Dong ◽  
Jun Wang ◽  
Yong Zhang ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Phase Change ◽  
Phase Change Materials ◽  
Enhanced Heat Transfer

The CFD Simulation and Experimental Study of the Plate-Type Evaporative Condenser

2008 ◽  
Author(s):  
Dongsheng Zhu ◽  
Yuanxi Li ◽  
Jingwei Zhang ◽  
Xiang Jiang
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Experimental Study ◽  
Cfd Simulation ◽  
Water Film ◽  
Enhanced Heat Transfer ◽  
Air Velocity ◽  
Two Phase ◽  
Fluent Software ◽  
Plate Type

This paper presents a simulation of two operations—upwind, downwind with two-phase flowing in the plate bundles of the plate-type evaporative condenser, by means of the FLUENT software, which provide a direct illustration of the influence of the water film flowing on spray water flow, air velocity, air direction in the plate bundles. The result of simulation demonstrates the advantages of air-water parallel-flow over countercurrent in making use of enhanced heat transfer and mass transfer of fluid film.

Experimental Study of Single Phase Heat Transfer and Pressure Loss in a Spiraling Radial Inflow Microchannel Heat Sink

2015 ◽  
Vol 137 (7) ◽  
Author(s):  
Maritza Ruiz ◽  
Van P. Carey
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Flux ◽  
Single Phase ◽  
High Heat ◽  
High Heat Flux ◽  
Transfer Coefficients ◽  
Enhanced Heat Transfer ◽  
Heat Transfer Coefficients ◽  
Gap Height

This paper presents an experimental study of the heat transfer and pressure drop characteristics of a single phase high heat flux microchannel cooling system with spiraling radial inflow. The heat sink provides enhanced heat transfer with a simple inlet and outlet design while providing uniform flow distribution. The system is heated from one conducting wall made of copper and uses water as a working fluid. The microchannel has a 1 cm radius and a 300 μm gap height. Experimental results show, on average, a 76% larger pressure drop compared to an analytic model for laminar flow in a parallel disk system with spiral radial inflow. The mean heat transfer coefficients measured are up to four times the heat transfer coefficient for unidirectional laminar fully developed flow between parallel plates with the same gap height. Flow visualization studies indicate the presence of secondary flows and the onset of turbulence at higher flow rates. Combined with the thermally developing nature of the flow, these characteristics lead to enhanced heat transfer coefficients relative to the laminar parallel plate values. Another beneficial feature of this device, for high heat flux cooling applications, is that the thermal gradients on the surface are small. The average variation in surface temperature is 18% of the total bulk fluid temperature gain across the device. The system showed promising cooling characteristics for electronics and concentrated photovoltaics applications with a heat flux of 113 W/cm2 at a surface temperature of 77 °C and a ratio of pumping power to heat rate of 0.03%.

Experimental study of enhanced heat transfer by addition of CuO nanoparticle

2011 ◽  
Vol 48 (6) ◽  
pp. 965-978 ◽  
Author(s):  
Stella Jesumathy ◽  
M. Udayakumar ◽  
S. Suresh
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Enhanced Heat Transfer ◽  
Cuo Nanoparticle
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