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XX                                                 CONTENTS

CHAPTER                                                                                                                                                                 PAGE

IX. REVERBERATORY FURNACES CONSIDERED AS INVERTED WEIRS
WITH A CISTERN OR RESERVOIR.    DIMENSIONS  UPON WHICH

THEIR CORRECT OPERATION DEPENDS.......................    56

X. THE APPLICATION TO HOT GASES OF THE THEORY OF JETS OF

WATER..................................................    63

XI. METHODS OF COMPUTATION FOR FURNACES OF VARIOUS TYPES. ..    72

PART II
PRINCIPLES FOR THE RATIONAL CONSTRUCTION OF FURNACES ...    87
The Subdivision of a Current of Hot Gas..................    88
I.   VERTICAL REGENERATORS.................................    93
II.   HORIZONTAL REGENERATORS...............................    95
III.    HOT-BLAST STOVES.......................................    97
Construction of the Combustion Chamber of a Hot-blast
Stove...............................................  102
IV.   HOT-BLAST TEMPERATURE EQUALIZERS......................  107
V.   IRON TUBE HOT-BLAST OR AIR HEATERS.................... 108
VI.   STEAM BOILERS..........................................   109
VII.   CHAMBER FURNACES, BRICK AND POTTERY KILNS..............   112
VIII.   CEMENTATION FURNACES..................................   115
IX.   FURNACES FOR ANNEALING MALLEABLE IRON CASTINGS.......   116
X.   CONTINUOUS OR MULTIPLE CHAMBER KILNS, RING FURNACES. .   116
XI.   MUFFLE FURNACES.......................................   121
XII.   VERTICAL FURNACES FOR TEMPERING, ANNEALING AND HEAT
TREATING.............................................   123
XIII.    HORIZONTAL TEMPERING FURNACES,........................  126
XIV.   ANNEALING AND HEATING FURNACES FOR BOILER PLATES.....   128
XV.   ORDINARY REVERBERATORY FURNACES FOR REHEATING.......   129
XVI.   SIEMENS TYPE REHEATING FURNACES.......................  131
XVII.   PIT FURNACES...........................................   135
XVIII.   CONTINUOUS HEATING FURNACES...........................  138
XIX.   TUNNEL FURNACES OR KILNS..............................  144
CONCLUSION.............................................   149
APPENDICES
I. FORMULA FOR THE INVERTED WEIR, ACCORDING TO THE COM-
PUTATION OF PROFESSOR J.-C. YESMANN.....................  153
II.  GAS FACTORS, VOLUMETRIC AND WEIGHT......................  160
III. VELOCITY HEADS REQUIRED FOR DIFFERENT VELOCITIES........  163