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

_________ xxiv CONTENTS. (</) The Feed Heaters. Arrangement of Heaters for Boiler and Evaporator Feed Water, . Fig. 22—Set of Heaters,________________________________ Pump Steam Economised,________________________________ Pump Exhaust used for (1) Heating Boiler Feed, or (2) be led into First Evaporator Coils, • •••••• Heaters, Construction,_____________________________________ Heaters, Surface of,..................................... Heaters, Materials used, ________________________________ Sections. 80 81, 82 83-85 86 87 88 89-91 (e) The Feed Regulator. Extension of type shown in Fig. 12; Fig. 23 for Multiple Distil- lation.........................................• • • 92’95 Objects of Regulator to regulate Feed and preserve uniform Brine Strength,...............................__ 96 Suction therefrom to Pump not to admit Air, .... 97 (/') The Pump—Its Functions. Threefold—(1) Circulation, (2) Fresh Water Delivery, and (3) Separate Feeds to Boiler and Evaporators, . 1. The Circulation Pump. Margin of Capacity,_________________________ Its Lubrication,________________________________________ Economy of Using the Exhaust Steam. Direct or Indirect Multiple effect given,__________________101, 102 2. Feed-Water Pump. Air not to be sucked in,_______________________________ Deliver the Feed Waters through Heaters, . 104 3. Fresh-Water Pump. Suitable for forcing the water to a height or distance, . ■ . 105 Circulation Pump—Strainers. Substances drawn in interfere with Feed Regulator, . . . 106