Experimental Facility for Investigations of Wire Mesh Absorbers for Pressurized Gases.

Tests of pressurized solar radiation absorbers require suitable pressure vessels and window structures for the penetrating light in order to heat up pressurized gases or gases other than air [1]. A test setup for such investigations has been developed at the Solar-Institut Jülich and is presented below. Air and Helium are the fluids used in the experiments. Helium has more favorable heat transfer properties. Computations have shown that helium has a higher volumetric heat transfer coefficient than air. Therefore, helium is a more suitable fluid to achieve the volumetric effect. [ABSTRACT FROM AUTHOR]