Thermal Performance Analysis of High-temperature Heat Transfer Process of Solar Energy
Volumetric solar receivers (VSR) have become a promising technology for the solar thermal conversion. The absorption of the concentrated solar radiation and the heat transfer to the working fluid are the two dominant processes. Firstly, the effects of two typical modeling approaches of the concentrated solar radiation for receiver are compared in view of porosity and mean cell size. Then, the radiation transport within the solar window and the porous absorber is fully simulated. The effects of porous structure parameters, slope error of the concentrator, and the alignment error of the receiver are analyzed.
Keywords: volumetric solar receivers (VSR), Monte Carlo ray tracing method, concentrated solar radiation, heat transfer
 Roldán, M. I., Zarza, E., and Casas, J. L. (2015). Modelling and testing of a solarreceiver system applied to high-temperature processes. Renewable Energy, vol. 76, pp. 608–618.
 Cui, F. Q., He, Y. L., Cheng, Z. D., et al. (2012). Numerical simulations of the solar transmission process for a pressurized volumetric receiver. Energy, vol. 46, no. 1, pp. 618–628.
 Wang, F. Q., Shuai, Y., Tan, H. P., et al. (2013). Heat transfer analyses of porous media receiver with multi-dish collector by coupling MCRT and FVM method. Solar Energy, vol. 93, pp. 158–168.
 Villafán-Vidales, H. I., Abanades, S., Caliot, C., et al. (2011). Heat transfer simulation in a thermochemical solar reactor based on a volumetric porous receiver. Applied Thermal Engineering, vol. 31, no. 16, pp. 3377–3386.
 Wang, F. Q., Shuai, Y., Tan, H. P., et al. (2013). Thermal performance analysis of porous media receiver with concentrated solar irradiation. International Journal of Heat and Mass Transfer, vol. 62, pp. 247–254.
 Lee, H. J., Kim, J. K., Lee, S. N., et al. (2012). Consistent heat transfer analysis for performance evaluation of multichannel solar absorbers. Solar Energy, vol. 86, no. 5, pp. 1576–1585.
 Shuai, Y., Xia, X. L., and Tan, H. P. (2008). Radiation performance of dish solar concentrator/cavity receiver systems. Solar Energy, vol. 82, no. 1, pp. 13–21.
 Buie, D., Dey, C. J., and Bosi, S. (2003). The effective size of the solar cone for solar concentrating systems. Solar Energy, vol. 74, no. 5, pp. 417–427.
 Delatorre, J., Baud, G., and Bézian, J. J. (2014). Monte Carlo advances and concentrated solar applications. Solar Energy, vol. 103, pp. 653–681.
 Hasuike, H., Yoshizawa, Y., Suzuki, A., et al. (2006). Study on design of molten salt solar receivers for beam-down solar concentrator. Solar Energy, vol. 80, no. 10, pp. 1255–1262.
 Johnston, G. (1998). Focal region measurements of the 20m2 tiled dish at the Australian National University. Solar Energy, vol. 63, no. 2, pp. 117–124.
 Dai, G. L., Xia, X. L., Sun, C., et al. (2011). Numerical investigation of the solar concentrating characteristics of 3D CPC and CPC-DC. Solar Energy, vol. 85, no. 11, pp. 2833–2842.
 Modest, M. F. (2013). Radiative Heat Transfer (third edition). San Diego: Academic Press.
 Vafai, K. (2005). Handbook of Porous Media (second edition). Porland: Taylor and Francis.
 Wu, Z. Y., Caliot, C., Flamant, G., et al. (2011). Coupled radiation and flow modeling in ceramic foam volumetric solar air receivers. Solar Energy, vol. 85, pp. 2374–2385.
 Wang, F. Q., Tan, J. Y., Ma, L. X., et al. (2014). Thermal performance analysis of porous medium solar receiver with quartz window to minimize heat flux gradient. Solar Energy, vol. 108, pp. 348–359.
 Wu, Z. Y., Caliot, C., Flamant, G., et al. (2011). Numerical simulation of convective heat transfer between air flow and ceramic foams to optimise volumetric solar air receiver performances. International Journal of Heat and Mass Transfer, vol. 54, no. 7, pp. 1527–1537.
 Lee, H. J. (2014). The geometric-optics relation between surface slope error and reflected ray error in solar concentrators. Solar Energy, vol. 101, pp. 299–307.
 Kribus, A., Grijnevich, M., Gray, Y., et al. (2014). Parametric study of volumetric absorber performance. Energy Procedia, vol. 49, pp. 408–417.