| 摘要 |
The solar-powered system comprises a solar panel (SOK) which is connected to the primary side of a heat exchanger (WAT) via a primary liquid cycle (PKL). A storage tank (SPE) is connected to the secondary side of the heat exchanger via a secondary liquid cycle (SKL). A control device (STE) is provided to control the primary and secondary pumps (PPU, SPU). The control device is arranged such that after a request to activate the primary cycle, maintains an auxiliary primary cycle which shuts out the heat exchanger with the help of a three-way valve (V1) until the temperature exceeds a value which eliminates frost damage. The temperature is measured by a sensor (S3,S1) in the primary cycle and/or solar panel. A non-return valve (RSV) is arranged in the inflow of the primary cycle, on the side of the heat exchanger. - |
