| 摘要 |
A process comprising electrically activating a thermoelectric module (24) to provide a first module heated surface (26) and a module cooler surface (28); feeding the impure liquid to the first module heated (26) surface to produce vapour of the liquid; and transferring the vapour to the module cooler surfa ce (28) to effect heath transfer to the module cooler surface (28), the improvement comprising (a) directing a first portion of the vapour adjacent to or onto the module cooler surface (28) to effect heat transfer to the module cooler surface to produce a first condensed liquid; (b) directing a second portion of the vapour to condenser means (18) comprising a second cooler surface (46) remote from the module cooler surface (28) to effect heat transfer to the second cooler surface (46) to produce a second condensed liquid; and (c) collecting the first and second condensed liquids; wherein t he condensation means is such as to accept the balance of the latent heat contained in the vapour produced by the first module heated surface (26) whi ch latent heat cannot be pumped from the module cooler surface (28) through the module to the first module heated surface (26) in order to maintain the process under continuous vapour flow. |
