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In a parabolic trough concentrator, solar rays collected by the reflective surface are concentrated on the solar receiver. In our case, and among the different sensors designed for radiation concentration, we mention the parabolic cylindrical collector. A mathematical model is established to estimate the outlet temperature of the heat transfer fluid as well as the temperatures of the absorber tube and the glass envelope. A hourly simulation is performed from sunrise to sunset during a clear skydoi:10.5281/zenodo.4625468 fatcat:yr3vvsus4fcbfm4ctka2gwi3ki