| 摘要 |
<p>The invention provides both a method and apparatus for drying moisture-containing materials, in which the material is dried in a drying chamber (10). A heat exchanger (12) is provided in the drying chamber (10), and whilst air is prevented from entering the chamber, vapour or gas given off by the material is extracted from the chamber, at least some of that vapour or gas is compressed, and the compressed vapour or gas is passed through the heat exchanger (12), so that at least part of the latent heat of evaporation of the vapour or gas at the increased pressure is used to create the necessary temperature gradient between the heat exchanger (12) and the atmosphere within the drying chamber (10), to cause the heat emission required for drying the material.</p> |
