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

xiv CONTENTS. (E) The Feed. 1. Its Quantity. Sections. Salinity at 3S5 is beat,.................................. 92 Ordinary Sea Water (Ocean) Salinity,...................... 93 Impure Water more or less Fresh,.......................... 94 Saline Matter alone separable, ....... 95 2. Its Regulation. Feed Regulation—Fixed Amount provided,.................... 96 Fig. 11 97 Fig. 12 explained, 98 Fig. 13 : Regulation for Varying Evaporation, .... 99 Use of, when working with Exhaust Steam, .... 100 Fixes Strength of Brine and avoids Waste of Heat, . . . 101 Materials of Feed Regulator,..............................102 Feed from a Head of Water, ........ 103 3. Its Temperature—Heaters. Quantity and Temperature of Feed involved in removing, . . 104 Two Sources of Heat available,............................105 (1) “ Latent ” Heat of Secondary Steam—Fig. 13, . . . 106, 107 (2) “ Sensible ” Heat of Primary Water—Fig. 14, ... 108, 109 Heat Obtained explained,..............................110-113 Lagging of Heaters. Material of Lagging,......................................114 Economy, Standard of—on Ships. Special Economy by using Exhaust Steam,..................115, 116 Heater Surface. Amount of,...............................................117, 118 Heater—Construction of Steel or Gun-metal Casing—Inlets and Outlets, Position of, . 119 Copper Tubes,.............................................120