Researchers interested in testing collectors and the overall thermal system’s performance often requires highly collimated solar simulators. Sciencetech’s highly collimated solar simulators produce collimated light which allows optical collectors to concentrate the sunlight onto receivers. This can be used to assess the performance of the solar collectors in terms of the amount of suns (irradiance) that can be achieved at the receivers with the concentrating system.
We use spherical/parabolic back reflectors, fresnel lenses and other collimating optical configurations to produce solar simulators with extremely high collimations, almost similar to the sun’s divergence angle. We have several standard highly collimated solar simulator systems. One of our previously designed highly collimated solar simulators has the ability to produce a collimation angle with a half angle of 0.35
Most solar receivers are made up of a selectively layered absorber that serves to absorb the incoming solar radiation in the infrared wavelengths and transform it into heat. If you are conducting testing on the absorbing efficiencies and properties of solar thermal receivers, the most suitable solar simulator would be a high flux or a highly concentrated solar simulator that can produce dense intensities at the target. Such intensities will mimic the concentrating capabilities of solar thermal collectors in order to assess the absorbing power levels. These high-ﬂux solar simulators can oﬀer a spectrum similar to the solar light and while providing high light ﬂuxes to resemble a real concentrated solar power system.
We use high powered xenon or metal halide arc lamps with concentrating optics such as elliptical back reflectors to concentrate the light to a tight spot with high levels of irradiance values. The highest sun levels we have achieved are in the range of 10,000 suns with the use of a large system of multiple, high wattage xenon arc lamps.
Depending on your unique research requirements, we can customize highly concentrated solar simulators with different spectral matches, spatial non uniformities, temporal stabilities and other important parameters that should be included in your solar simulator solution.