| 摘要 |
PURPOSE:To control the temperature at the outlet of a heat medium with high accuracy, by estimating the temperature of the heat medium at the outlet of a heat collector based on the temperature of the heat medium at the inlet of the heat collector as well as the temperature inside the heat collector to control the flow rate and then compensating the flow rate by the actual temperature at the outlet of the heat collector. CONSTITUTION:The temperature and flow rate of a heat medium at the inlet of a solar energy collector 1 are detected together with the temperature of the heat medium within the collector 1 by a temperature detector 4 fitted to the inlet of the collector 1, a flow rate detector 6 and a temperature 5 provided within the collector 1. Based on this detection value, the temperature at the outlet of the collector 1 is estimated by a digital arithmetic device 7. A flow rate controller 2 is controlled by the deviation between the estimated value and the set value, and therefore the temperature at the outlet of the heat medium is controlled. Furthermore the outlet temperature of the heat medium is detected by a temperature detector 3 provided at the outlet of the collector 1, and a flow rate controller 2 is controlled by the deviation between the temperature at the outlet of the heat medium and the set value. Then the control of the flow rate is compensated by the estimated value. |
