摘要
基于Comsol Multiphysics软件对热阱换热系统建立了参数化模型,并通过动态热响应实验进行了验证。结合前期研究的优化结果对热阱系统的被动冷却性能进行了模拟分析。结果表明:增加单位面积用钢量并进行优化设计,可以缓解初始温度的升高以及初始热扰的增加带来的温度超标问题,并可以提高控制设备全运行时间。当用钢量为200 kg/m^(2)且采用最优设计时,室内初始温度可以提高2℃,室内初始热扰可以增加30%。用钢量增加至150 kg/m^(2)且采用最优设计时,控制设备可以全运行5 h。在工程要求的限值条件(用钢量及肋片参数取值)下,天花板热阱换热量的优化极限为6%。
A parametric model validated by a dynamic response experiment under variable thermal disturbance condition was established to simulate heat transfer of heat sinks based on Comsol Multiphysics.The optimization results of the previous research was combined,passive cooling effect of the heat sinks were simulated and analyzed.The results show that the excess temperature problem due to high initial air temperature and initial thermal disturbance can be alleviated by increasing the steel consumption and optimizing the fins parameters,and full running time of control equipment can be increased.For example,when steel consumption is 200 kg/m^(2),the initial indoor temperature can be increased by 2℃and the initial thermal disturbance can be increased by 30%after fins optimization.When the steel consumption is increased to 150 kg/m^(2)and the optimal design is adopted,all equipment can operate for 5 hours.And the heat transfer optimization potential of the ceiling heat sinks is 6%based on the actual project.
作者
吴晓艳
黄奕翔
张旭
Wu Xiaoyan;Huang Yixiang;Zhang Xu(School of Mechanical Engineering,Tongji University,Shanghai 201804,China;School of Mechanical Engineering,Jiaxing University,Jiaxing 314001,China)
出处
《低温工程》
CAS
CSCD
北大核心
2022年第2期29-36,76,共9页
Cryogenics
基金
国家自然科学基金(51678418)。
关键词
参数化建模
动态热响应
被动冷却
热阱
主控室
parametric modeling
dynamic thermal response
passive cooling
heat sinks
main control room
作者简介
吴晓艳,女,41岁,博士研究生、讲师;通信作者:张旭,男,66岁,博士生导师、教授。
