This study deals with the preliminary analysis of a small-scale Parabolic Trough Collector (PTC) installed on a rooftop at an industrial complex for the production of process heat. Four scenarios, featuring Heat Transfer Fluid (HTF) outlet temperatures from the PTC of 120°C, 150°C, 200°C, and 250°C, were assessed, varying both collector surfaces and storage capacities; the Levelized Cost of Heat (LCOH) was evaluated for each configuration. The analysis considered data from a commercially available PTC, selected based on a survey among research and industrial partners, and integrated into the System Advisor Model (SAM) libraries. Meteorological data from a North Italian site, characterized by a low annual DNI value, was also considered, assuming this location for the solar plant installation. Economic evaluations employed both literature reviews and real-component purchase price assessments conducted by the partnership. The findings suggest that a LCOH between 4.30 and 4.83 c€/kWh is achievable, with the HTF outlet PTC temperature of 200°C emerging as the scenario allowing for the lowest LCOH due to its balance between the costs of the plant, particularly those related to storage systems, and the thermal energy output.
Rovense et al. (Thu,) studied this question.