.~ With means to reposition solar collector for optimum radiation exposure {6}
604
.~.~ Having fluid power
DEFINITION
Classification: 126/604
Having fluid power:
(under subclass 600) Apparatus wherein the force for moving the actuating device is from a liquid or gas. [figure] [caption]The present invention relates to automatic thermal/hydraulic logic system for continuously positioning a heliostat in alignment with the sun in both horizontal and vertical planes. Solar radiation is monitored by phials which produce signal pressures of a magnitude that varies with phial exposure to the rays of the sun. The produced signal pressures are directed to thermally controlled valves which are compared with mechanically controlled valves of similar design feature. These control valves are centered so long as hydraulic fluid pressure signals on each end of a control valve are equal, but the valve spool is displaced to the left or to the right if and when a pressure differential
is created (improper alignment). When a specific differential sets in, a mechanical action takes place which moves the heliostat to its proper concentrating position. Movement ceases when the differential disappears (proper alignment).
