Experimental study of heat transfer intensification by using a novel combined shelf in food refrigerated display cabinets (Experimental study of a novel cabinets)

2010 ◽  
Vol 30 (2-3) ◽  
pp. 85-91 ◽  
Author(s):  
Y.L. Lu ◽  
W.H. Zhang ◽  
P. Yuan ◽  
M.D. Xue ◽  
Z.G. Qu ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Transfer Intensification

Enhancing Heat Transfer in a Cold Plate, Inserts vs. Nanofluids: Application to IT Servers

2013 ◽  
Author(s):  
Amrid Mammeri ◽  
Farid Bakir ◽  
Smaine Kouidri ◽  
Lionel Coutancier ◽  
Jean-Christophe Bonnin
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Surface Roughness ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Thermal Performance ◽  
Hydraulic Performance ◽  
Cold Plate ◽  
Heat Transfer Intensification ◽  
Enhancing Heat Transfer

This work is a comparative experimental study of two ways of heat transfer intensification inside the cold plate of an Indirect Liquid Cooled IT Server. The first way is classical, as surface extension or heat transfer coefficient enhancement by adding fins, turbulators, or surface roughness modification. The second is more recent, it is about using nanofluids. For comparison purpose, we have defined three criteria: thermal performance, hydraulic performance, and efficiency. According to those parameters, classical methods have shown better performances comparatively to nanofluids.

Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts

2020 ◽  
Vol 92 (3) ◽  
pp. 30901
Author(s):  
Suvanjan Bhattacharyya ◽  
Debraj Sarkar ◽  
Ulavathi Shettar Mahabaleshwar ◽  
Manoj K. Soni ◽  
M. Mohanraj
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Thermal Performance ◽  
Working Fluid ◽  
The Novel ◽  
Heat Exchanger Tube ◽  
Heat Transfer Augmentation ◽  
Corrugated Tube ◽  
The Impact ◽  
Exchanger Tube

The current study experimentally investigates the heat transfer augmentation on the novel axial corrugated heat exchanger tube in which the spring tape is introduced. Air (Pr = 0.707) is used as a working fluid. In order to augment the thermohydraulic performance, a corrugated tube with inserts is offered. The experimental study is further extended by varying the important parameters like spring ratio (y = 1.5, 2.0, 2.5) and Reynolds number (Re = 10 000–52 000). The angular pitch between the two neighboring corrugations and the angle of the corrugation is kept constant through the experiments at β = 1200 and α = 600 respectively, while two different corrugations heights (h) are analyzed. While increasing the corrugation height and decreasing the spring ratio, the impact of the swirling effect improves the thermal performance of the system. The maximum thermal performance is obtained when the corrugation height is h = 0.2 and spring ratio y = 1.5. Eventually, correlations for predicting friction factor (f) and Nusselt number (Nu) are developed.

Experimental Study of Heat Transfer from Impinging Jet with Upstream and Downstream Crossflow

2010 ◽  
Vol 41 (8) ◽  
pp. 889-900 ◽  
Author(s):  
Daniel Thibault ◽  
Matthieu Fenot ◽  
Gildas Lalizel ◽  
Eva Dorignac
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Impinging Jet
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