DISTILLATION METHOD HAVING COUNTERFLOW HEAT EXCHANGE WITH CONDENSATE

摘要

A distillation method and apparatus which may be used in making potable water from sea water. The input liquid is circulated in a system wherein the heat of evaporation is recovered as the heat of condensation from the condenser is returned to the evaporator. The heat required to bring the raw liquid to the boiling point is supplied by heat exchange between the leaving condensate and/or concentrate with the entering raw liquid.