| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a solar thermal collection system capable of improving the efficiency of a track detection test and collecting solar heat with high efficiency.SOLUTION: A control device stops a solar thermal collector at a certain angle for predetermined time at a time of setting a track of the solar thermal collector confronting the sun, exerts a stepped control to change the angle thereafter, calculates a temperature difference of a fluid of a heat collection tube based on measured values of fluid temperatures at an inlet and an outlet by a temperature sensor during a period of the control, carries out a track detection test for obtaining time at which the temperature difference of the fluid has a maximum value and a set angle of the solar thermal collector at the time, calculates a correction parameter relating to installation errors on the basis of the set angle of the solar thermal collector at the time obtained by the track detection test, determines whether the correction parameter satisfies a predetermined convergence conditions, and changes the predetermined time for which the solar thermal collector is stopped at the predetermined angle and then carries out a track detection test again if the correction parameter does not satisfy the convergence condition.</p> |
