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This article presents a detailed analysis of parameters that affect the optical performance of parabolic trough solar collector (PTSC) and proposes a suitable method to optimize the relevant ones. A mathematical model is drafted and simulated for known geometry and parameters of industrial solar technology (IST) PTSC. The model was evaluated for three different configurations of IST PTSC involving distinct components. A comparison between the experimental results and model estimations indicates a maximum root-mean-square error (RMSE) of 0.7997, confirming the reliability of the proposed model. The influence of variations in absorber diameter (D_ao), length (l_rc), width (w_rc), and focal length of PTSC (f_rc), along with direct normal incidence (I_n), dirt factors (ξ_dm, ξ_dhc), and angle of incidence (θ) on the optical performance of PTSC has been investigated. It was established that variation in mentioned …