Determining the Deflection Magnitude of a Steel Receiver from a DSG Parabolic trough Concentrator under Stratified Flow Conditions

The purpose of this study is to determine the magnitude of the deformation of the receiver of a direct steam-generating system based on the angular distribution of temperature obtained from the water flow rate for a parabolic trough collector under stratified conditions. Several publications have developed models of temperature distribution in the wall of receivers but they have not been associated with a deformation feature. The model employed develops a finite difference grid for the tube wall; the system is solved for the boundary conditions imposed by the stratified flow under homogeneous distribution of concentrated solar radiation. The deflection magnitude is compared with experimental data obtained by the Experimental Solar Plant at the IIUNAM in Mexico City and reported in numerous scientific publications. The model results lie within a range of +/- 10% from experimental data.