采用电加热的方法,在恒热流和单独底面加热的情况下,实验研究了在不同风速和腔体倾角下风向角对一侧全开的圆柱形腔体热损失特性的影响.实验结果表明:风向角对混合对流热损失努塞尔数Nuc.w的影响比较复杂,其影响与风速和腔体倾角有关;风向角对辐射热损失努塞尔数Nur.w的影响较小,Nur.w随风向角的变化只在一小范围内波动.风向角对导热、辐射和混合对流热损失影响较小;辐射和导热热损失随风向角变化有着相同的变化趋势,且它们近似相等,但均远小于混合对流热损失.
参考文献
| [1] | Convection heat loss from cavity receiver in parabolic dish solar thermal power system: A review[J].Solar Energy,2010(8):1342-1355. |
| [2] | Lan Xiao;Shuang-Ying Wu;You-Rong Li.Numerical study on combined free-forced convection heat loss of solar cavity receiver under wind environments[J].International Journal of Thermal Sciences,2012:182-194. |
| [3] | M. Prakash;S. B. Kedare;J. K. Nayak .Investigations On Heat Losses From A Solar Cavity Receiver[J].Solar Energy,2009(2):157-170. |
| [4] | U. Leibfried;J. Ortjohann .Convective heat loss from upward and downward-facing cavity solar receivers: measurements and calculations[J].Journal of Solar Energy Engineering,1995(2):75-84. |
| [5] | Experimental and simulation study on wind affecting particle flow in a solar receiver[J].Solar Energy,2010(2):263. |
| [6] | Wu, S.-Y.;Guan, J.-Y.;Xiao, L.;Shen, Z.-G.;Xu, L.-H..Experimental investigation on heat loss of a fully open cylindrical cavity with different boundary conditions[J].Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics,2013:92-101. |
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