Design and Operation of Sustainable Systems: Heliostat Design Report

This report presents a comprehensive design of a heliostat, a crucial component in concentrated solar power systems. The report begins with an introduction to heliostats and their significance in harnessing solar energy, emphasizing the Second Law of Thermodynamics and the advantages of small-scale heliostat systems. The core of the report focuses on the design of a journal bearing for the heliostat, including the selection of bearing diameter, consideration of forces, and pressure calculations. The report delves into the determination of the specific wear rate, material selection (Nomex), and friction torque calculations. Furthermore, the design is optimized to minimize frictional force and torque while ensuring a 25-year lifespan. The report concludes with a proposed monitoring and prevention system, highlighting the HelioControl system for closed-loop control and optimization of heliostat aim points. The design considers various factors, including material properties, operational parameters, and the integration of advanced control systems to enhance the efficiency and longevity of the heliostat system.