Control cylinder for solar energy collector - operated by temperature variable volume insert to move solar panel for maximum absorption

摘要

The hydraulic cylinder has an internal chamber (2) filled with material with internal passages and subjected to variable temperature. The front of the cylinder has an end wall (4). The end wall has a central hole to allow the passage of a tube (5). The piston (6) is connected to the rod (7) with the external joint (8). The tube has a return spring (5). The cylinder operates with change of solar temperature so that solar panels may be oriented according to the panel surface temperature.