| 摘要 |
<p>A rotary, parallel plate, regenerative dehumidifier comprises a rotor, itself comprising a multi-spoked frame supporting a spirally wound, plastics film ribbon (12) coated on both surfaces with a desiccant. Gas may flow axially through the rotor between the turns of ribbon so as to contact the desiccant thereon. The rotor is encircled by a casing and circumferential and diametral seals define two gas flow passages extending in the axial direction through the rotor. In use, gas to be dried flows through one said passage and a desiccant regenerating gas flows in the opposite direction through the other. The desiccant on the ribbon comprises silica gel covering that half (20) of the ribbon first met by the gas to be dried and sodium type X zeolite covering the other half (19) of the ribbon. The dehumidifier functions more efficiently than a like dehumidifier in which the ribbon is wholly coated with either desiccant alone.</p> |
