The thermal performance of a saturated steam solar cavity receiver was numerically studied. In order to improve the uniformity of heat flux and wall temperatures on the boiling tubes, the proper selection method of the surface reflectivity for the boiling tubes and the other cavity walls was found. The uniform surface reflectivity of the boiling tubes can only obtain the highly non-uniform heat flux and wall temperature distributions. When the surface reflectivity of the boiling tubes is selected according to the non-uniform distribution of heat flux, the wall temperatures and the heat flux on the boiling tubes appear much more uniform. And when the surface reflectivity of the other cavity walls is selected as high as possible, the thermal efficiency of the receiver would be improved. Meanwhile, the increasing surface reflectivity of the cavity walls has slight effect on the heat flux and wall temperature distributions of the boiling tubes.
- Fluids Engineering Division
Selection of Surface Reflectivity for a Solar Cavity Receiver
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Tu, N, Wei, J, & Fang, J. "Selection of Surface Reflectivity for a Solar Cavity Receiver." Proceedings of the ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. Volume 1C, Symposia: Fundamental Issues and Perspectives in Fluid Mechanics; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Gas-Solid Flows: Dedicated to the Memory of Professor Clayton T. Crowe; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes. Chicago, Illinois, USA. August 3–7, 2014. V01CT24A003. ASME. https://doi.org/10.1115/FEDSM2014-21331
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