This paper was presented at the 2008 International Renewable Energy Storage Conference which took place in Berlin, Germany. In 2003/2004, the German government funded a project undertaken by the German Aerospace Center to test a concrete storage module on the Plataforma Solar de Almeria in Spain.
A follow up project developed by Ed. ZÃ¼blin AG concentrated on cost reduction, storage capacity and thermal conductivity. The design, construction and test results of the concrete storage test module are presented in this paper.
The successful results of the tests proved that concrete storage technology is a suitable option for storing sensible heat. Its wide range of possible working temperatures (in the range of up to 400Â°C and possibly 500Â°C in future developments) and its modular structure make it particularly attractive to applications such as parabolic trough solar thermal power plants amongst other technologies.