| 摘要 |
<p>A heat and mass exchanger for exchanging heat and mass between an airsteam (16), a liquid desiccant (26) and a refrigerant, comprises one or more roll-bond plates (10). Each roll-bond plate has at least one internal passage (18), the passage(s) being generally in the plane of the respective roll-bond plate. In use, a refrigerant is caused to flow through the internal passage(s) of the roll-bond plate(s). One or more flow areas (14) for a liquid desiccant are defined over at least part of an external surface of the roll-bond plate(s). In operation the air stream (16) makes contact with a large area wetted by flow of liquid desiccant (26), providing effective transfer to the desiccant of heat from the air and of latent heat from water vapour carried in the air. At the same time, the refrigerant flowing in the internal passage(s) (18) of the roll-bond plates (10) continuously cools the desiccant.</p> |
