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

THE DISTILLING CONDENSER. 139 shown, it is got at its coldest, as it rises up pipe (F) direct from the bottom pan (B). 8. The following slight addition is needed to make the distiller work properly when the lower sheaf of tubes forms part of the apparatus ; it consists of a breathing knob to vent pipe (K), which allows the excess air to escape, when it comes over with the secondary steam at (S), by passing up the central tube and out into the atmosphere. In the distiller for producing warm water, the distilled water can escape freely from the bottom pan, and the air can pass along with it, but in the cold water producing distiller the lower tubes are filled with water, and there is no such means for the air to escape. 9. The distilled water produced by the distiller (Figs. 17, 18) flows, or is pumped away, as may be arranged. If the water is warm for feeding boilers, and an automatic feed regulator is included with the apparatus, the distilled water gravitates into the fresh water box of the feed regulator, and as it flows from the regulating box to the adjacent box, the water may flow or be pumped to where desired. If the distilled water is produced cold, it flows from the fresh water pipe (F) to a filter (described later on), then through the feed regulator, from which it flows or is pumped to where desired. 1. The Circulation Water. 10. The secondary steam passing from the evaporator into the distilling condenser has to be condensed. Cold sea water, being ready to hand, naturally suggests itself. Not only is the sea water the readiest, but it is also by far the most efficient medium that could be obtained for