Abstract: A solar receiver includes a hollow body, which has a longitudinal axis (8.4), a wall (8) surrounding the longitudinal axis (8.4), an opening (9) disposed in the wall (8) for the entry of heat rays, and an end region opposite the opening (9). The wall (8) includes an outer wall (8.1), an inner wall (8.2), and a partition wall (8.3) disposed therebetween. The outer wall (8.1) and the partition wall (8.3) enclose an outer annular space (8.1.1). The inner wall (8.2) and the partition wall (8.3) enclose an inner annular space (8.2.1). The outer annular space (8.1.1) has, in the end region, an inlet (12) for a free-flowing medium. The two annular spaces (8.1.1, 8.2.1) are conductively connected to one another in the region of the opening (9), and the inner annular space (8.2.1) has an outlet (11) for a free-flowing medium in the end region.

Abstract: Length adjustment can be performed in a simple manner and without impairment of the insulating effect in an insulation cassette for the heat insulation of elongated elements. A multilayer insulation includes flat reflection elements (21, 22). Each layer of the insulation has at least two of the flat reflection elements (21, 22), which overlap at least partly at their ends (24) facing each other.

Abstract: A support for a pipeline, especially for cold liquids, has a two-part or more than two-part carriage, which surrounds an insulating shell surrounding the pipeline. The carriage includes carriage parts connected to one another at connection flanges. One of the connection flanges is arranged under the pipeline when viewed from a base plate on which the pipeline is supported vertically toward the central axis of the pipeline.

Abstract: An insulation system for shafts through which hot gases flow, especially exhaust gas shafts of gas turbines has an insulation layer (20, 40) as well as a flat cover (26, 39), which holds the insulation layer (20, 40) and covers it against the gas flow. The cover (26, 39) is guided by bearing rails (21, 41). In such an insulation system, the number of spacers (22, 23, 24; 47, 48, 49) by which the bearing rails (21, 41) are fastened to a shaft wall (25, 50) shall be minimized. Furthermore, the insulation system shall be able to be manufactured with a high degree of prefabrication in the workshop and with low assembly effort at the construction site. The bearing rails (21, 41) are fastened to the shaft wall (25, 50) with a fixed mount (31, 51) and at least one movable mount (32, 52).