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Modeling and Simulation of an Invasive Mild Hypothermic Blood Cooling System

Chinese Journal of Mechanical Engineering 2021年第1期34卷 45-53页

作者： Na Wang Qinghua Liu Yan Shi Shijun Wang Xianzhi Zhang Chengwei Han Yixuan Wang Maolin Cai Xunming Ji Engineering Training Center Beihang UniversityBeijing 100191China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144China People's Hospital of Juye County Heze 274900China Department of Mechanical Engineering Kingston Univer sityLondonUK. Department of Neurosurgery and Cerebrovascular Diseases Research In stitute Xuanwu HospitalCapital Medical UniversityBeijingChina

Nowadays,mild hypothermia is widely used in the fields of post-cardiac arrest resuscitation,stroke,cerebral hemorrhage,large-scale cerebral infarction,and craniocerebral *** this paper,a locally mixed sub-low temperature device is designed,and the cold and hot water mixing experiment is used to simulate the human blood transfer *** set a foundation for the optimization of the heat transfer system,the static characteristics are analyzed by building the mathematic model and setting up the experimental *** addition,the affection of several key structure parameters is *** experimental and simulation studies,it can be concluded that,firstly,the mathematical model proved to be ***,the results of simulation experiments show that 14.52℃ refrigeration can reduce the original temperature of 33.42℃ to 32.02℃,and the temperature of refrigerated blood rises to 18.64℃,and the average error is about 0.3℃.Thirdly,as the thermal conductivity of the vascular sheath increases,the efficiency of the heat exchange system also increases ***,as the input cold blood flow rate increases,the mass increases and the temperature of the mixed blood temperature *** provides a research basis for subsequent research on local fixed-point sub-low temperature control technology.

关键词： Therapeutic hypothermia Invasive blood cooling static character Heat transfer

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