Numerical and experimental investigation of enhanced heat transfer radiator through air deflection used in fuel cell vehicles

2021 ◽  
pp. 122205
Author(s):  
Chengyuan Gong ◽  
Yingmeng Du ◽  
Yi Yu ◽  
Huawei Chang ◽  
Xiaobing Luo ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Fuel Cell ◽  
Fuel Cell Vehicles ◽  
Enhanced Heat Transfer

Experimental Investigation of Enhanced Heat Transfer and Pressure Drop in a Solar Air Heater Duct With Discretized Broken V-Rib Roughness

2014 ◽  
Vol 137 (2) ◽  
Author(s):  
Anil Kumar Patil ◽  
J. S. Saini ◽  
Krishna Kumar
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Geometrical Parameters ◽  
Solar Air Heater ◽  
Enhanced Heat Transfer ◽  
Transfer Rates ◽  
Air Heater ◽  
Effective Efficiency ◽  
Flow Through ◽  
Considerable Enhancement

The present study examines the augmentation in heat transfer and friction in a flow through solar air heater duct with discretized broken V-rib roughness. The experimental outcomes pertaining to Reynolds number from 3000 to 17,000, relative gap position (s′/s) from 0.2 to 0.8, relative staggered rib position (p′/p) from 0.2 to 0.8 have been presented and discussed. Discretized broken V-rib roughness brought out considerable enhancement in heat transfer rates over V-rib roughness and smooth duct. Effective efficiency of discretized broken V-rib roughened solar air heater is estimated and geometrical parameters of roughness are optimized with regard to temperature rise parameter and insolation.

A novel radiator structure for enhanced heat transfer used in PEM fuel cell vehicle

2020 ◽  
Vol 157 ◽  
pp. 119926 ◽  
Author(s):  
Chengyuan Gong ◽  
Jun Shen ◽  
Yi Yu ◽  
Kaiqiang Wang ◽  
Zhengkai Tu
Keyword(s):  
Heat Transfer ◽  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Fuel Cell Vehicle ◽  
Enhanced Heat Transfer

Experimental investigation on enhanced heat transfer of vertical condensers with trisection helical baffles

2016 ◽  
Vol 109 ◽  
pp. 51-62 ◽  
Author(s):  
Jiafeng Wu ◽  
Jiahao Zhou ◽  
Yaping Chen ◽  
Mingchao Wang ◽  
Cong Dong ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Enhanced Heat Transfer

An Attempt to Uncouple the Effect of Coriolis and Buoyancy Forces Experimentally on Heat Transfer in Smooth Circular Tubes That Rotate in the Orthogonal Mode

1992 ◽  
Vol 114 (4) ◽  
pp. 858-864 ◽  
Author(s):  
W. D. Morris ◽  
R. Salemi
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Experimental Investigation ◽  
Circular Tube ◽  
Leading Edge ◽  
Combined Effect ◽  
Enhanced Heat Transfer ◽  
Coriolis Forces ◽  
Circular Tubes ◽  
Buoyancy Forces

This paper reports the results of an experimental investigation of the combined effect of Coriolis and buoyancy forces enforced convection in a circular tube that rotates about an axis orthogonal to its centerline. The experiment has been deliberately designed to minimize the effect of circumferential conduction in the tube walls by using material of relatively low thermal conductivity. A new correlating parameter for uncoupling the effect of Coriolis forces from centripetal buoyancy is proposed for the trailing and leading edges of the tube. It is demonstrated that enhanced heat transfer on the trailing edge occurs as a result of rotation. On the leading edge significant reductions in heat transfer compared to the zero rotation case can occur, but with possible recovery at high rotational speeds.

Experimental investigation of enhanced heat transfer of a car radiator using ZnO nanoparticles in H2O–ethylene glycol mixture

2019 ◽  
Vol 138 (5) ◽  
pp. 3007-3021 ◽  
Author(s):  
Asif Khan ◽  
Hafiz Muhammad Ali ◽  
Rabia Nazir ◽  
Rashid Ali ◽  
Arjmand Munir ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Ethylene Glycol ◽  
Zno Nanoparticles ◽  
Enhanced Heat Transfer

An Attempt to Experimentally Uncouple the Effect of Coriolis and Buoyancy Forces on Heat Transfer in Smooth Circular Tubes Which Rotate in the Orthogonal Mode

1991 ◽  
Author(s):  
W. D. Morris ◽  
R. Salemi
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Experimental Investigation ◽  
Forced Convection ◽  
Circular Tube ◽  
Leading Edge ◽  
Enhanced Heat Transfer ◽  
Coriolis Forces ◽  
Circular Tubes ◽  
Buoyancy Forces

This paper reports the results of an experimental investigation of the combined effect of Coriolis and buoyancy forces on forced convection in a circular tube which rotates about an axis orthogonal to its centre line. The experiment has been deliberately designed to minimise the effect of circumferential conduction in the tube walls by using material of relatively low thermal conductivity. A new correlating parameter for uncoupling the effect of Coriolis forces from centripetal buoyancy is proposed for the trailing and leading edges of the tube. It is demonstrated that enhanced heat transfer on the trailing edge occurs as a result of rotation. On the leading edge significant reductions in heat transfer compared to the zero rotation case can occur but with possible recovery at high rotational speeds.

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