| 摘要 |
<p>A recycling channel starting from the outlet end of the drying zone of a linen drying and extending to the inlet end of the drying zone, forms a closed circuit for the current of air propelled by the fan, along which the air makes repeated passages. Arranged along the path followed by the air there is a preheating system located upstream to the drying zone and acting as a heat pump. Downstream to the drying zone there is first of all a chilled zone on the walls of which, the vapour collected condenses and is evacuated by gravity. This is followed by a reheater zone for the air which is propelled along the channel to be put through the drying zone in a new cycle.</p> |
