https://repository.cyi.ac.cy/handle/123456789/864 2026-05-01T21:29:13Z https://repository.cyi.ac.cy/handle/CyI/2152 Title: Adaptive optics heliostat facet local control mechanism Authors: Milidonis, Kypros Abstract: Adaptive optics heliostat facet local control mechanism 2023-03-21T00:00:00Z https://repository.cyi.ac.cy/handle/CyI/2151 Title: UAV-based system and method for the characterization of the radiant field of reflective concentrating solar systems Authors: Milidonis, Kypros; Blanco, Manuel Jesus; Grigoriev, Victor; Bonanos, Aristides Abstract: Currently, all the existing flux measurement systems that operate at concentrating solar facilities around the world are custom made, tailored for the specific needs of each application. Most of these systems are fixed at specific locations and are only able to characterize and obtain flux measurements on flat plates located in front of a receiver. They don't provide an overall estimate of the radiant field around the focal point or line of the Concentrating Solar System. For the majority of the systems, expensive equipment is needed to carry out the measurements (i.e. high-end CCD or CMOS cameras) while the mechanics of the systems can be quite complex, issues of thermal expansion and thermal load by convection of hot air and radiation have to be considered in the design process. This imposes space requirements in front of the receiver to be implemented, and in most cases the need for complicated cooling circuits. Furthermore, those flux measurement systems should operate in a manner that they do not impose any interruptions to the operation of the plant. The above issues become even more significant at very large plants. In Concentrated Solar Tower system technology for instance, where the heliostat field is circular surrounding a cylindrical receiver on the tower making it is very difficult to implement a traditional method for characterizing the heat flux reaching the receiver, i.e. installing a vertical linear moving bar, which is moved along the circumferential receiver line is not an easy task, and, depending on the angle of acceptance of the receiver, several cameras are needed on the ground to capture the reflected radiation. 2022-11-10T00:00:00Z https://repository.cyi.ac.cy/handle/CyI/2150 Title: UAV-based system and method for the characterization of the geometry of solar concentrating mirrors Authors: Milidonis, Kypros; Blanco, Manuel Jesus; Grigoriev, Victor; Bonanos, Aristides Abstract: Currently, all the existing flux measurement systems that operate at concentrating solar facilities around the world are custom made, tailored for the specific needs of each application. Most of these systems, are fixed at specific locations and are only able to characterize and obtain flux measurements on flat plates located in front of a receiver. They don't provide an overall estimate of the radiant field around the focal point or line of the Concentrating Solar System For the majority of the systems, expensive equipment is needed to carry out the measurements (i.e. high-end CCD or CMOS cameras) while the mechanics of the systems can be quite complex, issues of thermal expansion and thermal load by convection of hot air and radiation have to be considered in the design process. This imposes space requirements in front of the receiver to be implemented, and in most cases the need for complicated cooling circuits. Furthermore, those flux measurement systems should operate in a manner that they do not impose any interruptions to the operation of the plant. The above issues become even more significant at very large plants. In tower technology, for instance, where the heliostat field is circular surrounding a cylindrical receiver on the tower making it is very difficult to implement a traditional method for characterizing the heat flux reaching the receiver, i.e. installing a vertical linear moving bar, which is moved along the circumferential receiver line is not an easy task, and, depending on the angle of acceptance of the receiver, several cameras are needed on the ground to capture the reflected radiation. 2022-11-10T00:00:00Z