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

xii CONTENTS. (C) Heating Surface. Sections. Pressure Inside Coil,.......................................... 25 “ Sensible ” Heat to be Regai’ded, ...... 26 Basis of Standard Working Conditions, ..... 27 Comparison at Different Internal and External Pressures, . . 28-36 Applicable mostly to Multiple Distillation,.................... 37 Form of Surface, .......... ag Fig. 5 : Original Form,................................ 40 41 Figs. 6 and 6a : “ Weir’s” Original Type,....................42-44 Fig. 7 : Caird & Rayner’s First Improvement— Fig. 8 : Caird & Rayner’s Later Type, . . . . . , . . 45 46 Straight Vertical Tubes give way to Coils, ..... 47 Objects in View in Shape of Surface, ...... 48-50 Surface Measured by Square Feet—Table K : Surface of Various Tube Sizes,................................................ m Size and Length of Tubes used, ....... 52 Fixing of Coils,................................................53 Figs. 9 and 10 : Showing Mode of Fixing,........................54 Thickness of Tubes used,....................................... 55 Materials used for Coils,...................................... 5g Copper and Brass Compared. 1. Conductivity. Péclet’s Experiment,........................................ 57 Ratio of Copper and Brass—Table L,.......................... 58 2. Galvanic Action. Comparison of Copper and Brass—Tinning—Zinc Plates used to Divert Action,........................................... 59 Effect of Galvanic Action,.................................. 60 Tinning, when necessary, ........ 61 Evaporative Surfaces, Fitting of. How Fitted at Ends, and to Casing, ...... 62-64 Coil Drain. Action of Coil Drain Explained, ...... Size of Drain— Water, not Steam, to pass—“ Sensible ” Heat passes, not Latent Heat,........................... 65, 66 67, 68