Comments on “Detailed analysis for the cooling performance enhancement of a heat source under a thick plate” by Hajmohammadi M.R. [Energy Convers. Manage. 76 (2013) 691–700]

2016 ◽  
Vol 129 ◽  
pp. 34-35 ◽  
Author(s):  
Zhongyuan Shi ◽  
Tao Dong
Keyword(s):  
Heat Source ◽  
Detailed Analysis ◽  
Thick Plate ◽  
Performance Enhancement ◽  
Cooling Performance

Enhancement of Central Processing Unit Liquid Cooling Performance Using Hexagonal Boron Nitride Nanofluids

2019 ◽  
Vol 11 (3) ◽  
Author(s):  
Özgür Atik ◽  
Hakan Ertürk
Keyword(s):  
Boron Nitride ◽  
Closed Loop ◽  
Performance Enhancement ◽  
Hexagonal Boron Nitride ◽  
Processing Unit ◽  
Pumping Power ◽  
Liquid Cooling ◽  
Particle Volume ◽  
Cooling Performance ◽  
Central Processing

Cooling performance enhancement of computer liquid cooling (LC) systems using hexagonal boron nitride (hBN)–water nanofluids is investigated experimentally. Particle volume fractions of 0.1–2% are considered at constant flow rates varying from 0.3 to 2 L/min for two different cold plates (CPs), with and without fins. A commercial closed-loop LC system is also tested to examine performance of hBN–water nanofluids at constant pumping power. It was observed that the thermal performance can be improved by using hBN nanofluids, and higher improvements are achieved for systems with limited convection rates.

scholarly journals Cooling Performance Enhancement of Air-Cooled Condensers by Guiding Air Flow

Energies ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3503
Author(s):  
Huang ◽  
Chen ◽  
Yang ◽  
Du ◽  
Yang
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Heat Dissipation ◽  
Performance Enhancement ◽  
Cooling System ◽  
Wind Effects ◽  
Cooling Performance ◽  
Air Cooled Condensers ◽  
Arc Shape

Adverse wind effects on the thermo-flow performances of air-cooled condensers (ACCs) can be effectively restrained by wind-proof devices, such as air deflectors. Based on a 2 × 300 MW coal-fired power generation unit, two types (plane and arc) of air deflectors were installed beneath the peripheral fans to improve the ACC’s cooling performance. With and without air deflectors, the air velocity, temperature, and pressure fields near the ACCs were simulated and analyzed in various windy conditions. The total air mass flow rate and unit back pressure were calculated and compared. The results show that, with the guidance of deflectors, reverse flows are obviously suppressed in the upwind condenser cells under windy conditions, which is conducive to an increased mass flow rate and heat dissipation and, subsequently, introduces a favorable thermo-flow performance of the cooling system. When the wind speed increases, the leading flow effect of the air deflectors improves, and improvements in the ACC’s performance in the wind directions of 45° and –45° are more satisfactory. However, hot plume recirculation may impede performance when the wind direction is 0°. For all cases, air deflectors in an arc shape are recommended to restrain the disadvantageous wind effects.

FE-Analysis of Hot Forming of Al Large Thick Plate for Spherical LNG Tank Considering Cooling Performance of Grid-Typed Die

2012 ◽  
Vol 29 (11) ◽  
pp. 1190-1198
Author(s):  
Jung-Min Lee ◽  
In-Kyu Lee ◽  
Dae-Soon Kim ◽  
Il-Keun Kwon ◽  
Seon-Bong Lee ◽  
...  
Keyword(s):  
Thick Plate ◽  
Fe Analysis ◽  
Hot Forming ◽  
Cooling Performance ◽  
Lng Tank

Cooling performance enhancement of LED (light emitting diode) packages with carbon nanogrease

Energy ◽  
2013 ◽  
Vol 60 ◽  
pp. 195-203 ◽  
Author(s):  
Seong Rim Nam ◽  
Chung Woo Jung ◽  
Chang-Hwan Choi ◽  
Yong Tae Kang
Keyword(s):  
Performance Enhancement ◽  
Light Emitting Diode ◽  
Cooling Performance ◽  
Light Emitting ◽  
Led Light

scholarly journals Liquid Cooling System for CPU by Electroconjugate Fluid

2014 ◽  
Vol 6 ◽  
pp. 126301 ◽  
Author(s):  
Yasuo Sakurai ◽  
Takeshi Nakada ◽  
Kazuya Edamura
Keyword(s):  
Heat Source ◽  
Personal Computer ◽  
Simple Structure ◽  
Cooling System ◽  
Jet Flow ◽  
Liquid Cooling ◽  
Remarkable Property ◽  
Cooling Performance ◽  
Basic Characteristics ◽  
Liquid Cooling System

The dissipated power of CPU for personal computer has been increased because the performance of personal computer becomes higher. Therefore, a liquid cooling system has been employed in some personal computers in order to improve their cooling performance. Electroconjugate fluid (ECF) is one of the functional fluids. ECF has a remarkable property that a strong jet flow is generated between electrodes when a high voltage is applied to ECF through the electrodes. By using this strong jet flow, an ECF-pump with simple structure, no sliding portion, no noise, and no vibration seems to be able to be developed. And then, by the use of the ECF-pump, a new liquid cooling system by ECF seems to be realized. In this study, to realize this system, an ECF-pump is proposed and fabricated to investigate the basic characteristics of the ECF-pump experimentally. Next, by utilizing the ECF-pump, a model of a liquid cooling system by ECF is manufactured and some experiments are carried out to investigate the performance of this system. As a result, by using this system, the temperature of heat source of 50 W is kept at 60°C or less. In general, CPU is usually used at this temperature or less.

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