论文部分内容阅读
相变浆体在蓄能和温度控制等方面有重要应用。本文通过改进等效比热模型,在定热流边界条件下,对典型相变浆体(包括相变微胶囊浆体和四丁基溴化铵水合物浆体)在管内的层流对流换热建立了数学物理模型并进行了数值计算得出了相变浆体在不同加热量、初始浆体浓度和质量流量条件下管内沿程温度变化,与实验结果进行了对比并分析了各参数对流动换热的影响。
Phase change slurry has important applications in energy storage and temperature control. In this paper, by improving the equivalent specific heat model, the convection heat transfer of typical phase change slurry (including phase change microcapsule slurry and tetrabutylammonium bromide hydrate slurry) in the tube under constant heat flow boundary conditions The mathematic model was established and numerical calculation was made to get the change of temperature along the tube in different heating amount, initial slurry concentration and mass flow condition. The results were contrasted with the experimental results and the influence of each parameter on the flow Effect of heat exchange.