Читать книгу Energy Storage - Группа авторов - Страница 19

A circular array of large mirrors with sun-tracking motion (called heliostats) reflect direct sunlight onto an absorber system in central receiver. Such systems are also called power tower as the receiver is mounted on the top of a tower [Figure 1.3]. This is a point focusing system and the two axis tracking allows a higher concentration ratio and temperature. The receiver collects radiation as thermal energy and a HTF carries the energy from the receiver to the power block. Central receiver configuration allows high plant size due to its design. Currently, 25% of the installed CSP configurations are central receiver plants [Figure 1.4]. Research works on central receiver systems are reviewed and presented by Behar et al. (2013), Ho and Iverson (2013), and Avila-Marin (2011).