【摘要】 建立了一种环套结构腔体式吸收器模型,对吸收器集热过程进行了稳态分析,讨论了典型工况下各参数的变化对腔体式吸收器效率及工质出口温度的影响,得出当聚光器开口宽度为5 m的时候,腔体开口圆心角、内壁半径、流道外壁半径的优化值分别为24°,0.168 m和0.20 m.计算得出工质出口温度相同时,真空管吸收器的热转换因子要高于管簇式和环套式,管簇式高于环套式.更多还原

【Abstract】 A model was constructed for the cavity absorber of the eyelet thimble structure,and the heat collecting process of the absorber was analyzed under steady state.The influence of the variation of several parameters on the efficiency of the cavity absorber and the outlet temperature of the working media was discussed in typical operation mode.The following conclusion was obtained: when the aperture width of the concentrator is 5 meters,the optimized values for the centre angle of the aperture,the inner and the outer radius of the flow passage are 24°,0.168 m and 0.20 m,respectively.The computed result shows that when the outlet temperature is the same,the heat conversion factor of the vacuum tube absorber is the highest,with that of the tube bundle absorber higher than that of the eyelet thimble cavity absorber.更多还原