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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

OPTIMIZATION OF SOLAR CAVITY RECEIVER FOR CROSS LINEAR CONCENTRATED SOLAR POWER SYSTEM – A NUMERICAL STUDY

Get access (open in a dialog) DOI: 10.1615/IHTC16.nee.024318
pages 7953-7960

Sinopsis

This work focused on the optimization of the receiver of Cross-linear concentrated solar power (CL-CSP) system called Cavity Linear Receiver (CLR). CL-CSP is a hybrid system developed by Tokyo Institute of Technology to combine features from Linear Fresnel Reflector (LFR) and Solar Power Tower (SPT). The CLR optimization considers the non-uniformity of solar heat flux and tube temperature which are related to the tube position and cavity size. A 3D numerical simulation method from the combination of several commercial tools is utilized for this purpose. It is divided into two parts, optical simulation using the Monte Carlo Ray Tracing Method (MCRT) and CFD simulation using Finite Volume Method (FVM). The geometrical parameters to be investigated are the receiver tubes position, cavity depth, and cavity width along with cavity surface reflectivity. The numerical simulations investigated the effect of these parameters’ variation to receiver efficiency. The investigations were done under steady state condition and uniform input condition. The combined numerical simulation had been successfully utilized to perform optimization on the CLR in determining cross-sectional configuration with the highest performance. Also, through the variation of geometrical parameters in CLR, the optical efficiency was known to be more significant to the overall efficiency. The highest optical efficiency was achieved when the tubes were close to the cavity window and the distance between tubes was small.