A Practical Manual On Sea Water Distillation
With A Description Of The Necessary Machinery For The Process

i35 CHAPTER VII . THE DISTILLING CONDENSER. 1. By distilling condenser is meant the condenser that is annexed to the evaporator. This is different from the surface condensers used for condensing engines. 2. The distilling condenser is generally used for two purposes—first, to condense all or part of the gained or secondary steam received from the evaporator into pure distilled water (more or less warm) to make up for the loss of the boiler feed-water, or, secondly, to condense part or all of such evaporator steam into cold fresh water for drinking purposes. (a) Warm Feed-Water Production. 3. Fig. 17 shows a distiller for yielding icarm water. The secondary steam or vapour from the evaporator enters the distilling condenser at (A), and its passage into the tubes (T) is sometimes controlled by a valve. The steam or vapour thus admitted is condensed (by the surrounding cold water) into warm distilled water, which escapes at the outlet (B). The circulation sea water enters the distiller casing at (C), fills the casing, and surrounds the tubes ; after condensing the secondary steam or vapour inside the tubes, it finally escapes at the outlet (D) in a more or less heated state. The feed-water can be taken from the branch (F), which may be placed a little higher than the circulation outlet, so that the feed-