| 摘要 |
A flue gas heat recovery system comprises a first heat exchanger 5 configured to recover heat from flue gases emitted by a boiler 6, a thermal store comprising a tank 2 containing a heat recovery liquid 3, and a first circulation means 4 to circulate the heat recovery liquid through the first heat exchanger. Preferably, the system also comprises a second heat exchanger 8 configured to transfer heat from the heat recovery liquid to water 9 entering the boiler, and a second circulation means 7 to circulate the heat recovery liquid through the second heat exchanger. The heat recovery liquid may comprise water with corrosion inhibitors, water with dissolved solutes, or a non-aqueous liquid such as oil. The thermal store tank may be open vented. A further heat capture system, such as a solar panel (19, fig.3), may be used to augment the heat stored in the thermal store. The first and second circulation means may comprise pumps. Preferably, an additional circulation means (26, fig.4) is used to circulate heat recovery liquid through an underfloor heating system (25, fig.4). |
