| 摘要 |
<p>A solar hot water system (10) comprising an ambient temperature sensor (34), a controller (20), a valve (18), a water storage tank (14), having an inlet and an outlet (14b), and at least a first solar panel (12), having an inlet (12a) in fluid communication with the water storage tank outlet (14b) and an outlet (12b) in fluid communication with the water storage tank inlet (20). When the temperature sensor (34) indicates to the controller (20) that the ambient temperature is above a predetermined level, the controller (20) controls the valve (18) to direct flow from the water storage tank outlet (14b) to the solar panel inlet (12a) and from the solar panel outlet (12b) to the water storage tank inlet (14a). When the temperature sensor (34) indicates to the controller (20) that the ambient temperature is below a predetermined level, the controller controls the valve (18) to direct flow from the solar panel inlet (12a) to the valve (18) and so to atmosphere.</p> |
