Working package WP13 (JRB) addresses research to establish the know-how on how to achieve ultra-high concentration in CSP facilities. This field has recently received an increased interest e.g. in research projects addressing solar gas turbine (EU Projects: SOLHYCO, SOLUGAS) or in application of solar powered thermo-chemical cycles (EU Projects: HYCICLE , HYDROSOL) where temperature above 1000°C are required. One very promising concept is the use of secondary concentrators that re-concentrate the sunlight in a second stage close to the absorber surface.

Another important parameter for the design and evaluation of high flux concentrators is the ‘sunshape’ (angular distribution of solar irradiation). This quantity is rarely measured and it does not exist a common way to measure it accurately. So the outcome of this task is expected to be:

Downloadable reports: