Sea water desalination - by descending film evaporation and vapour compression in common horizontal tank

摘要

Plant for the desalination of sea water consists of an evaporator which is combined in one unit with a vapour compressor, driven by an i.c. engine. The evaporator is a descending film evaporator with a horizontal nest of evaporator tubes. The compressor is arranged in the centre of one end, in line with the central vapour collection space around which the evaporator tubes are grouped. This improves the capacity of a plant without increased capital cost. It operates with very small temp. differentials between heating and boiling space.