热板瞬态热性能分析
|
摘要
设计一种用相变散热来扩散热量的热管基板模块,通过热板瞬态性能实验发现热板蒸发端芯体和冷凝端芯体温度降分别占热管总温度降的86%和13%,关闭比启动时温度分布更均匀。热板达到稳态的时间主要取决于传热系数,传热系数越大,达到稳态的时间越短。蒸发端芯体是主要热阻,热板启动和关闭时蒸发端温度始终大于冷凝端温度。同时对各类散热装置进行了热阻分析,确定了热板散热器的传热优化方向。
A heat pipe substrate module diffused heat by phase change was designed and transient thermal properties of the vapor chamber was analyzed.The temporal experiment results indicated that temperature drop of the wick of the evaporation and condensation is respectively by 86 percent and 13 percent of the total temperature drop of the vapor chamber,and the closure is more uniform than the startup of the temperature distribution.The time of heat pipe to get steady state mainly depends on the heat transfer coefficient.The larger the heat transfer coefficient is,the shorter the time to reach steady state is.The wick of the evaporation is the main thermal resistance,when the heat pipe starts and closes,the temperature of evaporation is always greater than the condensation.At the same time,the thermal resistance of various heat sinks was analyzed,and the heat transfer optimization direction of the flat heat plate radiator was determined.
A heat pipe substrate module diffused heat by phase change was designed and transient thermal properties of the vapor chamber was analyzed.The temporal experiment results indicated that temperature drop of the wick of the evaporation and condensation is respectively by 86 percent and 13 percent of the total temperature drop of the vapor chamber,and the closure is more uniform than the startup of the temperature distribution.The time of heat pipe to get steady state mainly depends on the heat transfer coefficient.The larger the heat transfer coefficient is,the shorter the time to reach steady state is.The wick of the evaporation is the main thermal resistance,when the heat pipe starts and closes,the temperature of evaporation is always greater than the condensation.At the same time,the thermal resistance of various heat sinks was analyzed,and the heat transfer optimization direction of the flat heat plate radiator was determined.
引文
[1]ZHU K,ZHENG M,WANG B,et al.Experimental Study of Energy Saving Performances in Chip Cooling by using Heat Sinkwith Embedded Heat Pipe[J].Energy Procedia,2017,105:5160-5165.
[2]IWAMURO N,LASKA T.IGBT history,state-of-the-art,and future prospects[J].IEEE Transactions on electron devices,2018,65(6):2675-2675.
[3]JAROSLAW L,BOGUSLAW W,GILBERT D M,Measurements and simulations of transient characteristics of heat pipes[J],Microelectronics reliability,2006,46:109-115.
[4]郭磊.电子器件散热及冷却的发展现状研究[J].低温与超导,2014,42(2):62-66.
[5]RAHMAN M L,NAWRIN S,SULTAN R A,et al.Effect of fin and insert on the performance characteristics of close Loop pulsating heat pipe(CLPHP)[J].Procedia Engineering,2015,105:129-136.
[6]YE Y H,SHI Y X,SAW L H,et al.Performance assessment and optimization of a heat pipe thermal management system for fast charging lithium ion battery packs[J].International Journal of Heat and Mass Transfer,2016,92(1):893-903.
[7]CHO J,YANG J,PARK W.Evaluation of air distribution system's airflow performance for cooling energy savings in high-density data centers[J].Energy and Buildings,2014,68:270-279.
[8]王玉珏,杜雪涛.水冷式热管散热器在服务器中的应用研究[J].机械设计与制造,2015(5):39-42.
[9]汪双凤,胡艳鑫,陈金建.应用于LED灯具散热的平板热管传热特性[J].工程物理学报,2012,33(8):1371-1374.
[10]WANG X Y,ZHU Y L,ZHU M Z,et al.Thermal analysis and optimization of an ice and snow melting system usinggeothermyby super-long flexible heat pipes[J].Applied Thermal Engineering,2017,112:1353-1363.
[11]张明,刘中良,王晨.平板热管均热器与热沉的一体化设计[J].工程热物理学报,2010,31(5):853-856.
[12]张亚平,余小玲,冯全科,新型径向平板热管传热性能的实验研究[J].西安交通大学学报,2007,41(7):780-783.
[13]CHEN T S,CHEN K H,WANG C C.A simplified transient three-dimensional model for estimating the thermal performance of the vapor chambers[J].Applied thermal engineering,2006,26:2087-2094.
[14]战洪仁,李春晓,王立鹏,等.基于VOF模型对重力热管内部沸腾冷凝过程的仿真模拟[J].2016,35(1):30-35.
[15]于程,刘向东,张孟臣,等.平板热管内气液两相流动与传热的可视化实验研究[J].工程热物理学报,2017,38(4):807-810.
[16]张良华,余小玲,杨旭,等,电力电子集成模块用平板热管的传热研究[J].电子学报,2009,37(8):11851-1854.
[2]IWAMURO N,LASKA T.IGBT history,state-of-the-art,and future prospects[J].IEEE Transactions on electron devices,2018,65(6):2675-2675.
[3]JAROSLAW L,BOGUSLAW W,GILBERT D M,Measurements and simulations of transient characteristics of heat pipes[J],Microelectronics reliability,2006,46:109-115.
[4]郭磊.电子器件散热及冷却的发展现状研究[J].低温与超导,2014,42(2):62-66.
[5]RAHMAN M L,NAWRIN S,SULTAN R A,et al.Effect of fin and insert on the performance characteristics of close Loop pulsating heat pipe(CLPHP)[J].Procedia Engineering,2015,105:129-136.
[6]YE Y H,SHI Y X,SAW L H,et al.Performance assessment and optimization of a heat pipe thermal management system for fast charging lithium ion battery packs[J].International Journal of Heat and Mass Transfer,2016,92(1):893-903.
[7]CHO J,YANG J,PARK W.Evaluation of air distribution system's airflow performance for cooling energy savings in high-density data centers[J].Energy and Buildings,2014,68:270-279.
[8]王玉珏,杜雪涛.水冷式热管散热器在服务器中的应用研究[J].机械设计与制造,2015(5):39-42.
[9]汪双凤,胡艳鑫,陈金建.应用于LED灯具散热的平板热管传热特性[J].工程物理学报,2012,33(8):1371-1374.
[10]WANG X Y,ZHU Y L,ZHU M Z,et al.Thermal analysis and optimization of an ice and snow melting system usinggeothermyby super-long flexible heat pipes[J].Applied Thermal Engineering,2017,112:1353-1363.
[11]张明,刘中良,王晨.平板热管均热器与热沉的一体化设计[J].工程热物理学报,2010,31(5):853-856.
[12]张亚平,余小玲,冯全科,新型径向平板热管传热性能的实验研究[J].西安交通大学学报,2007,41(7):780-783.
[13]CHEN T S,CHEN K H,WANG C C.A simplified transient three-dimensional model for estimating the thermal performance of the vapor chambers[J].Applied thermal engineering,2006,26:2087-2094.
[14]战洪仁,李春晓,王立鹏,等.基于VOF模型对重力热管内部沸腾冷凝过程的仿真模拟[J].2016,35(1):30-35.
[15]于程,刘向东,张孟臣,等.平板热管内气液两相流动与传热的可视化实验研究[J].工程热物理学报,2017,38(4):807-810.
[16]张良华,余小玲,杨旭,等,电力电子集成模块用平板热管的传热研究[J].电子学报,2009,37(8):11851-1854.