SOLAR THERMAL COLLECTOR DEVICE AND AUTOMATIC SOLAR TRACKING METHOD FOR SOLAR THERMAL COLLECTOR DEVICE

摘要

This solar thermal collector device (10), when controlling a collector (20) on the basis of a trajectory directly opposite the sun, performs a step-like control in which the collector stops at predetermined time intervals at a given angle on the basis of the trajectory and the angle is then changed; calculates the amount of heat collected by the receiver (30) during the control period; performs a trajectory detection test in which the time at which the amount of heat collected by the receiver (30) is at the maximum, and the setting angle of the collector (20) at this time, are obtained; and, if the difference between the setting angle of the collector at the time obtained in the trajectory detection test and the setting angle in the trajectory calculation obtained through changing the parameter relating to installation error is smaller than a predetermined value, determines a parameter; and controls the driving system (50) at the setting angle calculated after making a correction on the basis of the determined parameter.