| 摘要 |
The water heating system comprises a water storage tank 6, boiler 2 (e.g. condensing boiler), separate water heating system 8, additional tank 52 arranged to receive hot emissions from the boiler, and a pump system. The pump system is connected to the storage tank and is arranged to direct water from the storage tank to either the separate water heating system or the additional tank depending upon the state of the separate water heating system and the additional tank. The pump system may comprise a pump 30 and a control valve 32 controlled by a controller 60, the controller commanding the pump and valve to direct water from the storage tank based upon temperature measurements taken by sensors 12,56. The additional tank may comprise a boiler heat recovery system 4 that collects condensation produced by exhaust fumes of the condensing boiler, the heat from the condensate being passed to water in coil 54. The separate water heating system may comprise a renewable energy system such as a solar collector 10 having a drain back tank 16 and a heat exchanger 18. The system may also comprise a mains water supply 42. A method of heating water is also claimed. |
