Modern Gasworks Practice

810 INDEX Purifiers (dry), in rotation, 588 in series, 588 lifting gear for, 605 operation of, 588 present day systems, 588 pressure in, 605 reverse action in, 582 rules for size of, 20, 597 size of connections, 21, 600 temperature of, 577, 581 valves for, 607 various rules for size, 598 water gas, 21 water valves for, 609 Pyrometers, 229 accuraoy of, 235, 241 base metal, 240 Callendar, 233 Cambridge, 233 expansion types, 241 Féry types, 237, 241 Foster, 238 general considerations relating to, 242 installation of, 241 optical, 231, 239 radiation, 237, 238 resistance, 233 Siemens, 233 Stefan-Bolzman law, 239 Steinle, 230 theoretical principles of, 239 thermo-electric, 235 Wanner, 232 Wedge, 232 Wheatstone’s bridge, 234 Quartz, in fireclay, 194 various forms of, 198 Radiated energy, 239 Radiation, losses from, 67 prevention of loss from, 81 Pyrometers, 237, 238 Rankine’s formula for wall pressure, 53 Rateau exhausters, 497 Rational analysis of fireclays, 195 Reactions, theory of combustion, 65 Reducing atmosphere, 207, 209 Rees, W. J„ 217 Reeson retort house governor, 279 Reflux pressure system, 268 Refractory materials, 193 casting of, 211 contraction and expansion of, 202, 207 corrosion of, 215, 217 crushing strength of, 202, 208 diatomaceous, 227 Refractory materials, effect of atmosphere on, 207, 209 effect of impurities on, 200, 209, 215 effect of loading on, 202, 204 ferric oxide in, 196 fluxing of, 200, 209, 224 for insulation, 226 for producers, 225 for water gas plants, 215 German retorts, 198, 210 hånd and machine made, 211, 213 porosity of, 202, 206, 210 relation of to retort setting, 208 silica, 196, 198 siliceous, 196 tests for, 202 texture of, 200 working temperatures of, 209 working up of clay for, 195 Regenerators, 60 Brooke’s, 100 design of, 76 different types of, 95 Drake’s, 99 effect of, 64, 95 Gibbons and Masters, 97 Pintsch’s, 99 S. Metropolitan Gas Co.’s, 101 Winstanley’s, 101 Reinforced concrete (see under Concrete) Resin bodies in coal, 358 Resistance pyrometers, 233 Retort house, oapacity of, 17 charging and discharging maohines, 281 cost of, 27,51,52 dimensions of, 56, 71 floors for, 57 govemors, 275 horizontal, 52, 60 mechanical handling plant for, 280 pressure on walls of, 53 roofs for, 57 stage type, 52 subway type, 52 various types of, 55 Retort settings (see also under Producers) appurtenances for, 244 bracing for, 246 chimney area for, 86 combustion chamber, 103 constructional points, 73, 223 continuous horizontal, 109 Control of horizontal, 125 cost of, 106, 221 depth of fuel bed for, 65 dimensions of, 18, 71 direct-fired, 60, 70 explosions in, 132