| 摘要 |
An apparatus, and associated method, for controlling the connection of a heating device water circuit 4 to a main water circuit 5. The connection includes a valve 8 for controlling the flow of water from the heating device water circuit output to the main water circuit. The apparatus includes a control system for controlling operation of the valve, where the control system has two sensor inputs comprising first and second temperature sensor inputs 9, 10. The first temperature sensor input measures a return temperature at a location upstream of the heating device water circuit output and in a flow path extending from this output toward the heating device. The second temperature sensor input measures a forward temperature of the main water circuit downstream of the heating device water circuit output. Preferably, the heating device water circuit includes a combined heat and power (CHP) unit heating device 1 and a heat storage means 3. The main water circuit preferably includes a secondary heating device 2, such as a boiler. The CHP unit and the secondary heating device may be arranged to operate in a first mode where the CHP unit provides heat to the heat storage means and the secondary heating device provides all of the heated water required to meet the heat demand of an installation. |
