Estimation of Temperature Profile of A Receiver in Solar Central Tower

In the Solar Central Tower, the receivers are used to convert the concentrated solar radiations into useful energy via appropriate thermic fluid. A suitable optical field design for the positioning of the heliostats on the ground and the design of receiver system at a calculated height are two of the challenging tasks in the field of concentrated solar thermal technologies (CSTT). To estimate the optical power incident on the receiver for a designed solar field ray tracing techniques have efficiently been used. The incidence of high concentration of solar radiation at the receiver has a potential of damaging it during the operational hours due to varying flux in the incoming solar radiation. To protect the receiver from thermal damages, it proposed to monitor the receiver remotely using an imaging optics kept at the ground. The Planckian radiation emanating from the receiver during the operational hour is envisaged for this purpose. The estimated power in the Planckian radiation for a designated aperture of the imaging optics at various intervals during the day. The detectors having responsivity between two different range of wavelength can be used to monitor the change in the temperature of the receiver.