| 摘要 |
<p>A method for conditioning supply air in respect of its temperature in a recuperative heat exchanger (63) through which the supply air and exhaust air flow in heat-exchanging relation comprises supplying water to vertical walls of exhaust air flow passages (74) of the heat exchanger when cooling of the supply air is required and heating the exhaust air by means of a burner (87), preferably a gas burner, immediately adjacent the inlet of the exhaust air flow passages (74) when heating of the supply air is required. A recuperative heat exchanger (63) for carrying the method into effect comprises means for providing a flowing film of water on the walls defining flow passages (74) for the exhaust air and a burner (87) for heating the exhaust air immediately adjacent the inlet end of these flow passages.</p> |
