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

___________ CONTENTS. xxi Boiler Pressure. Sections. Right Pressure for best Economy,________________________29 Pump Steam. Steam to Drive Pump to be counted in Economy, ... 30 Exhaust’Steam used partly Retrieves Loss ____________________.... 31 Specified Economy. Heat obtained Extraneously, and Distilled Water used by Appara- tus, should be brought into Account for and against the Economy Specified,.................................. 32 Dirty Surfaces. Economy Reduced by Deposits on Heating Surfaces, especially of Boiler, 33................................................ Pressure Raised to Compensate, _____________________________...... 35 Margin of Power. Margin of 40 to 50 per cent, (of Time Production) Expedient— Working Apparatus Continuously, ____________________.... 36, 37 (C) Detailed Description of Land Apparatus. (a) The Boiler. Generally, for Sea-Water Feed,_____________________________38-40 1. Type, of Boiler. Water Tube Boilers—Cornish and Lancashire Boilers, . . 41-43 Simplest Construction, without Internal Work, is best, . • 44 2. Size of Boiler. Primary Steam only to be Generated,________________________45, 46 Boiler Suitable to various Types of Apparatus, .... 47 Salt-water Feed to be taken into Account, . 48 Boiler gets Smaller, but Pressure Greater, at each stage of Multiple Effect, _______________________________________ 49 Lowest Possible Pressure most Economical, .... 50, 51