基于FloEFD的吸附式制冷设备结构热设计与分析

A Structure Thermal Design and Analysis Based on FloEFD of an Adsorption Cooling System

本文针对特定的吸附式制冷设备开展了热力学仿真,并对水汽通道进行了结构设计与分析。探究了不同水汽通道结构对于吸附式制冷设备运行参数的影响。在仿真分析中,应用了工业级流体分析软件FloEFD,在简化后的MCAD模型上开展热仿真计算,极大地简化了分析流程。分析结果显示当水汽通道采用多孔矩形结构时,通道表明温度变化差异不大,比起使用单一的矩形孔状通道结构,其冷凝物质分量更为集中,但会有过多的相变潜热被通道结构吸收从而可能影响水汽在冷凝端的凝结效率。简化的仿真计算定性地对水汽通道结构的进行了热分析,该仿真方案可在未来结合实验进行验证并进一步细化还原设备原始的结构参数,以此在数值上探究该通道结构对吸附式制冷设备性能的关系。

Thispaper involves in the thermal simulations of a specialised adsorptionrefrigeration, where the structureof the vapour gate connecting the condenser and adsorption was analysed byinvestigating the effects of various gate structures on the workingperformance of refrigeration. An industrial fluid analysis software, FloEFD,was applied to simulations, which contributed to simplifying analysis process as modified MCAD model can bedirectly simulated. Results illustrate that the variation of temperatureis not significant within rectangular structure with openings. In comparison tothe gate with one opening, the condensed substance is more concentrated, but massivelatent heat of phase change might be absorbed by the gate, which may affect thecondensation efficiency of water vapor at the condenser. The simplifiedsimulations qualitatively conducted thermal analysis on the gate. In addition,this model can be verified in combination with experiments in the future andfurther developed by refining the structural parameters of the equipment, so asto explore the numerical correlation between the gate and the performance ofadsorption refrigeration.