Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014.
Thermal energy storage systems are integrated with concentrated solar thermal power plants to extend their operation beyond sunshine hours. They can also be used to boost their output during cloudy conditions. There are many types of thermal energy storage systems, but this article seeks to develop a broad operating logic that is applicable to most schemes. The article will describe how heat is moved into and out of thermal energy storage systems during operation, namely their charging and discharging processes.