含化学吸热热沉的传热实验分析研究  

Heat Transfer Experimental Analysis Study of Chemical Absorption Heat Sink

作　　者：李静[1] 赵恒[1] 

机构地区：[1]华南理工大学传热强化与过程节能教育部重点实验室,广州510640

出　　处：《工程热物理学报》2015年第11期2427-2431,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51176053)

摘　　要：为了进一步验证碳与二氧化碳化学吸热反应可以大量快速地移除热量,使用耐驰STA449C热综合分析仪,采用差示扫描量热的方法来分析二氧化碳与活性碳的吸热反应过程,得到活性碳样品质量随时间的变化曲线,焓变量随温度的变化曲线,从而获得碳与二氧化碳化学吸热反应的反应焓变。同时,通过设计碳-二氧化碳喷射冷却实验,检测利用该吸热反应进行散热的实际效果,验证将该化学吸热反应应用于高热流密度和高温条件下散热的可行性。In order to further verify that heat could be removed largely and instantaneously by applying this C-CO_2 endothermic reaction,NETZSCH STA449 C thermal analyzer,which is based on the Differential Scanning Calorimetry method（DSC）,is used in the experiment to analyze the endothermic process.TG curve（the mass of activated carbon varies with time） and DSC curve（enthalpy change varies with temperature） are obtained.Then the reaction enthalpy change is calculated,which is proved to be in accordance with theoretical calculation.Moreover,by designing C-CO_2 spray cooling experiment to test the real effect of heat dissipation,validity of numerical simulation and feasibility of applying this reaction for heat removal under high temperature or high heat flux conditions is clarified.

关 键 词：热分析 喷射冷却 TG曲线 DSC曲线 焓变量 

分 类 号：TK123[动力工程及工程热物理—工程热物理]