The University of Arizona
Self Focusing heliostats with Closed Loop Tracking
Principal Investigator: J. Roger Angel angelj@email.arizona.edu
This project will design, manufacture, and test a new type of heliostat and study its application for high-concentration CSP. The University of Arizona will integrate a DOE Small Innovative Projects in Solar (SIPS)-type reflector with a high-accuracy mount and tracking camera to demonstrate an accurately focused and centered image of the solar disc. This will be maintained automatically throughout the day by mechanically coupled twisting of the reflector. Even when using perfectly focused facets, distortions of the reflected image on the receiver are introduced due to the non-normal incidence between the heliostat and the receiver. The dynamic focusing of the mirror facet can result in a reflected image that approaches the theoretical limit, potentially leading to higher operating temperatures for concentrated solar power (CSP) and industrial process heat applications.
Topic area: Advanced Manufacturing
Topic area: Field Deployment