scholarly journals A Novel Pre-cooling System for a Cryogenic Pulsating Heat Pipe

2015 ◽  
Vol 67 ◽  
pp. 687-691 ◽  
Author(s):  
Dong Xu ◽  
Huiming Liu ◽  
Linghui Gong ◽  
Xiangdong Xu ◽  
Laifeng Li
Keyword(s):  
Heat Pipe ◽  
Cooling System ◽  
Pulsating Heat Pipe

scholarly journals Experimental study on novel pulsating heat pipe radiator for horizontal CPU cooling under different wind speeds

2021 ◽  
pp. 59-59
Author(s):  
Fumin Shang ◽  
Qingjing Yang ◽  
Shilong Fan ◽  
Chaoyue Liu ◽  
Jianhong Liu
Keyword(s):  
Temperature Distribution ◽  
Wind Speed ◽  
Heat Pipe ◽  
Cooling System ◽  
Heating Process ◽  
Temperature Uniformity ◽  
Pulsating Heat Pipe ◽  
Desktop Computer ◽  
Wind Speeds ◽  
Start Up

Herein, a horizontal CPU cooler with a pulsating heat pipe (PHP) for cooling desktop computer was developed. In the experiment, an electric heating block was used to heat a copper plate to simulate the heating process of CPUs. The cooling system consists of a cooling fan and a pulsating heat pipe cooler. The influence of cooling wind speed and heat load on heat transfer performance, start-up performance, and temperature uniformity of the PHP cooler was analyzed by controlling variable method. The wind speed was set to be 0 m/s, 0.1 m/s, 0.3 m/s, 0.5 m/s and 0.7 m/s respectively. The contour plots were used to analyze the uniformity of temperature distribution due to cooler. The results show that the start-up of the PHP led to a decrease in temperature of CPUs. As the cooling wind speed increased, the start-up time of the php dropped, the start-up temperature dropped, and its stability was also improved. The operation at different cooling wind speeds also changed the start-up mode of the PHP. The start-up performance was best at cooling wind speed of 0.3 m/s. The contour plot for temperature showed that the temperature distribution of the PHP cooler became more uniform with increased cooling wind speeds. There was excellent temperature uniformity at the cooling wind speeds of 0.3 m/s and 0.7 m/s. When the cooling wind speed was 0.7 m/s, the minimum average thermal resistance was 0.51 K/W.

Development of a Compact Micro Pulsating Heat Pipe

2011 ◽  
Author(s):  
Young Jik Youn ◽  
Sung Jin Kim
Keyword(s):  
Thermal Resistance ◽  
Heat Pipe ◽  
Silicon Wafer ◽  
High Performance ◽  
Cooling System ◽  
Rectangular Channel ◽  
Glass Plate ◽  
Working Fluid ◽  
Pulsating Heat Pipe ◽  
Rectangular Channels

A compact micro pulsating heat pipe was developed and tested to investigate thermal performance. Micro Flat Plate Pulsating Heat Pipe (FP-PHP) was fabricated using DRIE MEMS technique. A total of 10 parallel interconnected rectangular channels forming a meandering closed loop are engraved on the silicon wafer with a thickness of 1 mm. The top of the silicon wafer was covered by a transparent glass plate (#7740PyrexTM) with a thickness of 0.5 mm to allow visualization of the internal thermo-hydrodynamic behavior in the PHP. The overall FP-PHP has length of 50 mm, width of 15.5 mm, and thickness of 1.5 mm, respectively. The width and height of the engraved rectangular channel is 1 mm and 0.6 mm and the hydraulic diameter is 0.75 mm. The ethanol is used for working fluid. The results show that the FP-PHP without working fluid has thermal resistance of 17 °C/W and the FP-PHP with working fluid of filling ratio of 50% has thermal resistance of 4 °C/W. In other words, the FP-PHP has effective thermal conductivity of 650 W/mK which is about 1.6 times as much as of that of the Copper (keff = 400 W/mK). Therefore the developed FP-PHP can be used as compact high performance electronic cooling system.

HEAT TRANSFER STUDIES IN A CLOSED LOOP PULSATING HEAT PIPE

2014 ◽  
Vol 5 (1-4) ◽  
pp. 449-456
Author(s):  
Bhawna Verma ◽  
V. L. Yadav ◽  
K. K. Srivastava
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Closed Loop ◽  
Pulsating Heat Pipe

ENTROPY GENERATION ANALYSIS FOR A PULSATING HEAT PIPE

2013 ◽  
Vol 44 (1) ◽  
pp. 1-30 ◽  
Author(s):  
Sejung Kim ◽  
Yuwen Zhang ◽  
Jongwook Choi
Keyword(s):  
Heat Pipe ◽  
Entropy Generation ◽  
Pulsating Heat Pipe

PULSATING HEAT PIPE IN HYPERGRAVITY CONDITIONS

2015 ◽  
Vol 6 (1-2) ◽  
pp. 91-109 ◽  
Author(s):  
Mauro Mameli ◽  
Miriam Manzoni ◽  
Lucio Araneo ◽  
Sauro Filippeschi ◽  
Marco Marengo
Keyword(s):  
Heat Pipe ◽  
Pulsating Heat Pipe

NUMERICAL SIMULATION OF PULSATING HEAT PIPE WITH SURFACTANT SOLUTIONS

2018 ◽  
Author(s):  
Durga Bastakoti ◽  
Hongna Zhang ◽  
Wei-Hua Cai ◽  
Feng-Chen Li
Keyword(s):  
Numerical Simulation ◽  
Heat Pipe ◽  
Pulsating Heat Pipe ◽  
Surfactant Solutions
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