Abstract: An absorber unit including at least one heater element, a transparent enclosure, and a mount for the enclosure. The mount includes an inner tube and an outer tube. The invention also relates to a mirror unit including at least one reinforcement having a concave reinforcement element, wherein an upper mirror is fastened to an inner side of the reinforcement element and/or a lower mirror is fastened to an outer side of the reinforcement element. The invention also relates to a solar collector or solar installation including at least one support arm for receiving a mirror unit and/or an absorber unit.

Abstract: A distributor unit for a tracking unit for a solar collector, the distributor unit including at least one first line section with a first rotational block, which is designed to establish a fluidic connection between the first line section and a base element, in particular an upright, and a second line section with a second rotational block, which is designed to establish a fluidic connection between the second line section and a first support arm of the solar collector. The first line section is rotatably connected to the first rotational block, and the second line section is rotatably connected to the second rotational block.

Abstract: A distributor unit for a tracking unit for a solar collector, the distributor unit including at least one first line section with a first rotational block, which is designed to establish a fluidic connection between the first line section and a base element, in particular an upright, and a second line section with a second rotational block, which is designed to establish a fluidic connection between the second line section and a first support arm of the solar collector. The first line section is rotatably connected to the first rotational block, and the second line section is rotatably connected to the second rotational block.

Abstract: An opening and closing module for solar collector installations, characterized in that solar collectors and holding apparatuses form fixed movement units, which are arranged mirror-symmetrically in pairs and are attached via displaceable joints to a support apparatus, which is fixedly or movably attached to a supporting frame. The individual rotary joints at the movement units are positively guided via linear guides or pendulum supports, which are anchored at the support apparatus.

Abstract: A cleaning system for solar collectors, characterized in that movably mounted cleaning nozzles for introducing steam or water are secured to collectors, which can be closed in pairs at the mirror ends. The cleaning process is to take place partially or completely in the closed state or protective position.