Simulation and analysis of the central cavity receiver’s performance of solar thermal power tower plant

Abstract Solar central receiver, which plays a dominant role in the radiation–heat conversion, is one of the most important components in the solar tower plants. Its performance can directly affect the efficiency of the entire solar power generation system. In this study, an integrated receiver model for full range operation conditions was proposed in order to simulate and evaluate the dynamic characteristics of a solar cavity receiver. It mainly couples the radiation–heat conversion process, the determination of convective heat transfer coefficient, the temperature computation of receiver walls and the calculation and analysis of the thermal losses. Based on this model, the dynamic characteristics of the solar cavity receiver were tested by encountering a sudden solar radiation disturbance. In addition, the thermal loss was also calculated and analyzed with different wind conditions. The results indicated that the parameters of the receiver had a significant variation under the sharp disturbance of DNI if no control rules were imposed. The wind conditions can obviously affect the thermal losses and the value reaches its maximum when the wind blows from the side of the receiver ( α  = 90°). In order to verify the validity of this model, the simulation results were used to compare the design points under the same input conditions, and the results showed that simulation data had a good agreement with design data.

[1]  Sawat Paitoonsurikarn,et al.  A New Correlation for Predicting the Free Convection Loss from Solar Dish Concentrating Receivers , 2006 .

[2]  J. A. Dirks,et al.  SOLERGY; A computer code for calculating the annual energy from central receiver power plants , 1987 .

[3]  Hirohisa Matsumura,et al.  On the Conditions of Incipient Subcooled-Boiling with Forced Convection , 1963 .

[4]  Masud Behnia,et al.  Combined radiation and natural convection in a rectangular cavity with a transparent wall and containing a non‐participating fluid , 1990 .

[5]  Yiding Cao,et al.  Convection heat loss from cavity receiver in parabolic dish solar thermal power system: A review , 2010 .

[6]  Zhifeng Wang,et al.  Modeling and simulation of the pioneer 1 MW solar thermal central receiver system in China , 2009 .

[7]  M. Behnia,et al.  An Experimental and Computational Study of the Heat Loss Characteristics of a Trapezoidal Cavity Absorber , 2004 .

[8]  R. L. Earle.  CHAPTER 5 – HEAT-TRANSFER THEORY , 1983 .

[10]  Shireesh B. Kedare,et al.  Investigations on heat losses from a solar cavity receiver , 2009 .

[11]  Sawat Paitoonsurikarn,et al.  Experimental Investigation of Natural Convection Heat Loss From a Model Solar Concentrator Cavity Receiver , 2004 .

[12]  Sendhil Kumar Natarajan,et al.  Numerical investigation of natural convection heat loss in modified cavity receiver for fuzzy focal solar dish concentrator , 2007 .

[13]  Y. Hsu.  On the Size Range of Active Nucleation Cavities on a Heating Surface , 1962 .

[14]  A. M. Clausing,et al.  Convective losses from cavity solar receivers--Comparisons between analytical predictions and experimental results , 1983 .

[15]  Zhifeng Wang,et al.  Prospectives for China's solar thermal power technology development , 2010 .

[16]  A. M. Clausing,et al.  An analysis of convective losses from cavity solar central receivers , 1981 .

[17]  B. Bonduelle,et al.  Development of an Optimal Control Strategy for the Themis Solar Plant: Part I—Themis Transient Model , 1989 .

[18]  Qiang Yu,et al.  Modeling and simulation of 1 MW DAHAN solar thermal power tower plant , 2011 .

[19]  M. Berenguel,et al.  Modelling and Simulation of Central Receiver Solar Thermal Power Plants , 2005, Proceedings of the 44th IEEE Conference on Decision and Control.