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跨度增大;随着边界角的增大,热流密度圆周分布曲线向圆周角90°方向平移,同时热流密度极大值降低.在太阳直射强度大致相同情况下,入口流速与入口温度对接收管表面对流换热与最大温差影响很大;同时变物性对流体对流换热影响也较大.

参考文献

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[3] M F Modest.Radiative Heat Transfer[M].New York:Academic Press,Inc,2003
[4] 王志峰.抛物跟踪式太阳高温集热器的研究[J].太阳能学报,2000(01):69-76.
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