Thermal resistance network model for heat sinks with serpentine channels

2013 ◽  
Vol 27 (2) ◽  
pp. 298-308 ◽  
Author(s):  
Xiao-Hong Hao ◽  
Xue-Kang Li ◽  
Bei Peng ◽  
Ming Zhang ◽  
Yu Zhu
Keyword(s):  
Thermal Resistance ◽  
Network Model ◽  
Heat Sinks ◽  
Resistance Network ◽  
Resistance Network Model

Numerical and experimental studies on the thermal characteristics of the clutch hydraulic system with provision for oil flow

2019 ◽  
Vol 71 (6) ◽  
pp. 733-740 ◽  
Author(s):  
Biao Ma ◽  
Liang Yu ◽  
Man Chen ◽  
He Yan Li ◽  
Liang Jie Zheng
Keyword(s):  
Thermal Resistance ◽  
Network Model ◽  
Hydraulic System ◽  
Experimental Studies ◽  
Thermal Characteristics ◽  
Parameter Method ◽  
Content Type ◽  
Resistance Network ◽  
Oil Flow ◽  
Resistance Network Model

PurposeThis paper aims to investigate the thermal characteristics of the clutch hydraulic system under various oil flow conditions. Increasing the oil flow is one of the most important approaches to reduce the clutch temperature. However, the effect of the oil flow on the clutch temperature remains to be explored.Design/methodology/approachThe thermal resistance network model and the lumped parameter method are used to study the thermal characteristics of the clutch hydraulic system. The predicted temperature variations of the clutch and the oil are compared with experimental data.FindingsResults demonstrate that the larger the friction power is, the higher the temperatures of the clutch and the oil are. However, the temperature growth rates of the clutch and oil present different trends: the former decreases gradually and the latter increases constantly. Additionally, increasing the oil flow within a certain range gives rise to the decrease of clutch temperature and the increase of oil temperature; nevertheless, their variation trends are gradually weakening. When the oil flow is large enough, it brings a slight effect on the clutch temperature rise.Originality/valueThis paper extends the knowledge into the oil flow supply of the clutch hydraulic system. The conclusions can provide a theoretical guidance for the oil management of the transmission system. Additionally, the thermal resistance network model is also effective and efficient for other hydraulic equipment to predict the temperature variation.

scholarly journals Thermal Resistance Network Model for Heat Conduction of Amorphous Polymers

2021 ◽  
Author(s):  
Jun Zhou ◽  
Qing Xi ◽  
Jixiong He ◽  
Xiangfan Xu ◽  
Tsuneyoshi Nakayama ◽  
...  
Keyword(s):  
Heat Conduction ◽  
Thermal Resistance ◽  
Network Model ◽  
Amorphous Polymers ◽  
Resistance Network ◽  
Resistance Network Model

Investigating the thermal runaway features of lithium-ion batteries using a thermal resistance network model

2021 ◽  
Vol 295 ◽  
pp. 117038
Author(s):  
Jie Chen ◽  
Dongsheng Ren ◽  
Hungjen Hsu ◽  
Li Wang ◽  
Xiangming He ◽  
...  
Keyword(s):  
Thermal Resistance ◽  
Lithium Ion Batteries ◽  
Network Model ◽  
Lithium Ion ◽  
Thermal Runaway ◽  
Resistance Network ◽  
Resistance Network Model

scholarly journals Thermal resistance network model for heat conduction of amorphous polymers

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Jun Zhou ◽  
Qing Xi ◽  
Jixiong He ◽  
Xiangfan Xu ◽  
Tsuneyoshi Nakayama ◽  
...  
Keyword(s):  
Heat Conduction ◽  
Thermal Resistance ◽  
Network Model ◽  
Amorphous Polymers ◽  
Resistance Network ◽  
Resistance Network Model

Thermal Analysis and Experimental Validation of Laminar Heat Transfer and Pressure Drop in Serpentine Channel Heat Sinks for Electronic Cooling

2014 ◽  
Vol 136 (3) ◽  
Author(s):  
Xiaohong Hao ◽  
Bei Peng ◽  
Gongnan Xie ◽  
Yi Chen
Keyword(s):  
Pressure Drop ◽  
Thermal Resistance ◽  
Reynolds Numbers ◽  
Electronic Cooling ◽  
Heat Sinks ◽  
Total Thermal Resistance ◽  
Serpentine Channel ◽  
Resistance Network ◽  
Aspect Ratios ◽  
Resistance Network Model

In this paper, a thermal resistance network analytical model is proposed to investigate the thermal resistance and pressure drop in serpentine channel heat sinks with 180 deg bends. The total thermal resistance is obtained using a thermal resistance network model based on the equivalent thermal circuit method. Pressure drop is derived considering straight channel and bend loss because the bends interrupt the hydrodynamic boundary periodically. Considering the effects of laminar flow development and redevelopment, the bend loss coefficient is obtained as a function of the Reynolds number, aspect ratios, widths of fins, and turn clearances, through a three-regime correlation. The model is then experimentally validated by measuring the temperature and pressure characteristics of heat sinks with different Reynolds numbers and different geometric parameters. Finally, the temperature-rise and pressure distribution of the thermal fluid with Reynolds numbers of 500, 1000, and 1500 are examined utilizing this model.

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