| 摘要 |
<p>Heating apparatus comprising a combined chimney breast and fireplace unit (1) has a flue pipe (3) extending upwardly from the region of the fireplace (2) to a flue gas exit (4) in an upper region of the chimney breast. An air heating duct (5) conveys air in heat exchange relationship with the exterior surface of the wall of the flue pipe (3) from an air inlet (6) in the upper region of the chimney breast to the region of the fireplace (2). Air heating passages (12) surround the fireplace (2) and communicate with the air heating duct (5) for conducting air received from the duct (5) in heat exchange relationship with exterior surfaces of walls (11) defining the fireplace (2) to a hot air duct (16) for conveying at least part of the heated air to a hot air outlet (17) in the upper region of the chimney breast. The air heating duct (5) and the hot air duct (16) are separated within the unit (1) by a partition wall (20) extending upwardly within the unit (1) from the region of the fireplace (2) to the region of the flue gas exit (4) and hot air outlet (17) in the upper region of the chimney breast. The unit (1) may be associated with further extension units to carry the flue pipe and ducts through further storeys of a house and a roof space, and to bring about at the same time further heat exchange between hot flue gases in the flue pipe and air or water conducted through the units.</p> |
