Experimental study on the thermal performance of PCMs based heat sink using higher alcohol/graphite foam

2021 ◽  
pp. 117452
Author(s):  
Shisong Wang ◽  
Yuming Xing ◽  
Zhaolong Hao ◽  
Jianbao Yin ◽  
Xu Hou ◽  
...  
Keyword(s):  
Experimental Study ◽  
Thermal Performance ◽  
Heat Sink ◽  
Higher Alcohol ◽  
Graphite Foam

scholarly journals THE EFFECT OF FINS PERFORATION AND MATERIAL TYPE ON THERMAL PERFORMANCE OF A HEAT SINK UNDER NATURAL CONVECTION

2018 ◽  
Vol 18 (3) ◽  
pp. 446-459 ◽  
Author(s):  
Maha A Hussein ◽  
Mohammed I Makhoul
Keyword(s):  
Experimental Study ◽  
Natural Convection ◽  
Heat Loss ◽  
Thermal Performance ◽  
Heat Sink ◽  
Heat Dissipation ◽  
Heating Equipment ◽  
Solid Aluminum ◽  
Material Type ◽  
Solid Copper

An experimental study was done to investigate the effect of fin geometrymodification and material type on heat dissipation from a heat sink under natural convection.v-corrugated solid fin and v-corrugated perforated fin were designed for this purpose.Aluminum and Copper metals were selected in designing the fins because their wideapplication in cooling and heating equipment. Three different voltages 110, 150 and 200 Vsupplied to the heat sink to study their effects on the fins performance. Each experimentrepeats two times to reduce the error and the data recorded after reaching the steady stateconditions. The utilization of solid and perforated v-corrugated fins is compared. The resultsshowed that perforated fins dissipated heat more than corresponding solid by 15.4, 34 and32% for aluminum, and 2.7, 2.1 and 4.3% for copper fin in the three voltages. Also, theresults indicated that the heat loss by solid copper fin is greater by 56, 72 and 92% thancorresponding solid aluminum fin and for perforated fin case by 38, 31.7 and 51.9 % at110,150 and 200 V respectively.

Experimental Study on Evaporative Heat Sink

2013 ◽  
Author(s):  
Moo Joong Kim ◽  
Sangjin Kim ◽  
Kuen Tae Park ◽  
Hyun Jung Kim ◽  
Dong-Kwon Kim
Keyword(s):  
Experimental Study ◽  
Thermal Performance ◽  
Heat Sink ◽  
Heat Dissipation ◽  
Copper Plate ◽  
Heat Sinks ◽  
Water Evaporation ◽  
Industrial Systems ◽  
Sintered Copper ◽  
Fin Spacing

The heat sinks are used to dissipate heat from electronic and industrial systems. In the present study, in order to overcome limitation of traditional heat sink, we suggest and experimentally investigate new concept of heat sink which use evaporation of water. The heat sink is made from sintered copper plate and absorbs supplied water like sponges by capillarity-driven wetting. The absorbed water evaporates at the surface of heat sink and the surface temperature is dropped due to the latent heat of water evaporation. In this study, we experimentally compare the heat dissipation performance of the suggested heat sink with traditional heat sink. And we investigate the performance of heat sink made from the sintered copper plate with various particle radius and porosities. Finally, we find the fin spacing, at which the thermal performance is maximized.

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.

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