Document G0EBY0nXjvwLZ23MoqpzMDeN

Heating Ventilating Air Conditioning Guide 1938 Duct, ducts (icontinued) sizes of, 567, 571, 635 temperature loss in. 415 # temperature measurement m, 809 velocity measurement in, 811 Dust, 79, 823 air speeds to convey, 635, 642 catching devices, 86 collectors. 643 concentration in air, 82, 815 counter, 815 disposal of, 86 industrial exhaust systems, 633 measurement of, 815 Dynamic equilibrium. Carrier's equation for, 2 Dynamic head, 823 Dysenteria, 52 Eczema, 604 EDR, equivalent direct radiation, 828 Effective temperature, (see Temperature, Effective) Ether. 81. 579 Elbow, elbows, design of, 367, 398 equivalents, 340 loss of pressure in, 564 . resistance in, 643 sheet metal used in, 641 welding of, 368 Electric, electrical, automatic, control system, 686 central fan heating systems, 744 control, motor, 703 . current, as corrosion agent, 374. heat equivalent, 141, 160, 750 heating, 741 auxiliary, 749 cost of, 750 of hot water,- 747 industrial, 748 heaters, 742 conduction, 742 gravity convection, 743 radiant. 743 heating elements, 252, 742, 743 with unit heaters, 743 lamp bulbs, heat from, 160 motors, 703 resistors, 742 Eliminator plates and baffles, 499 Enthalpy. 22, 823 Entropy, 473, 478, 823 tables. 36, 38. 40, 42. 44 Equations, conversion, 833 Equilibrium, dynamic, 2 hygroscopic, 626 Equipment noise, 586 Equipment room, design of, 591 Equivalent, equivalents, circular, 572 direct radiation, 304, 601, 828 - elbow, 340 evaporation, 251, 823 heat, 823 of air infiltration, 140 of brake horsepower, 141 electrical, 833 mechanical, 826 length of run, 305 square feet, 264 Estimated design load, 823 Estimated maximum load, 823 Estimating driers, 665 Estimating fuel consumption, 229' Ethylene, 597 Eupatheoscope, 762, 817 Evaporation, 516 equivalent, 251 from human body, 54, 74 from water pans, 268 Evaporative condensers, 483 Evaporative cooling, 423, 483, 495, 501 Evaporators, 483 Exfiltration, 121, 229, 413 Exhaust systems, 633 classification of, 633 collectors, 643 corrosion, protection against, 645 design procedure for, 634 ducts for, construction of, 641 design of, 640 resistance in, 643, 644 . efficiency of, 645 fans for, 645 filters for, 644 flexible. 640 hoods for, 637 air flow in, 638 axial velocity formula for, 637 chemical laboratory, 640 large open, 639 velocity contours In, 637 industrial, 633 lateral, 637 motors for, 645 spray booth, 640 suction requirements, 635 velocity requirements, 635, 642 Expansion, of joints, 315, 767 of pipe. 315, 359, 767 in steam piping, 767 tanks, 349 Explosion hazard, inflammability of gases, 81 in operating rooms, 597 Exposure factors, 140 Extended heating surface, 823 Extended surface heating unit, 823 F Fan, fans, 531 A.S.H.V.E. test code for, 534 attic, 464 booster, equipment, 390, 426 control of, 541 designation of, 543 drives, arrangement of, 542 for drying, 540 for dust collecting, 541, 645 dynamic efficiency of, 533 efficiency of, 533 in electrical heaters, 744 furnaces, 393 for gas-fired furnaces. 222 induced draft. 180 for industrial exhaust systems, 645 mechanical draft, 180 mechanical efficiency of, 533 motive power of, 543, 706 control of, 703 operating characteristics, 180, 533 operating velocities, 539, 540 performance of, 531, 539 quietness of, 442 ratings of, 538 selection of. 396, 538, 541, 543, 645 static efficiency of, 533 ' system characteristics, 537 systems of heating, 409 tip speeds, 538 total efficiency of, 533 types of. 393, 531, 535. 539 in unit conditioners, 455 in warm air systems,- 390, 396 Xll Alphabetical Index to Technical Data Section Fatigue, human, 56 Fever therapy, (see Artificial Fever) Filter, filters, 521 automatic, 523 cloth, 644 design of, 521 dry air, 524 hay fever air, 604 installation of. 525 resistance of, 396 for sound, 392 unit type, 521 viscous type, 521 Fire walls, 640 Firing rate, 169, 171 Fittings, 355, (see also Connections, Pipe) areas of, 364 boiler, 258 copper, 365 flanged, 366, 723 lift, 287 screwed, 364 welding, 366, 370 Flame, with oil burners, 214, 219 Flanges, welding neck. 371, 372 Flexible exhaust systems, 640 Flexible materials, 589 Floors, heat transmission through. 111 Flue-gas analysis, 816 Fluid, fluids, cooling of, 511 formula for flow of, 563 meters, 774 Foodstuffs. regain of moisture of, 626 temperatures and humidities for processing, 622, 656 Force, 824 Forced-air heating system, design, 393 Forge shops, heat given off in, 675 Formulae, conversion, 833 heat transmission, 91 Foundries, heat given off in, 675 Freezing, of cooling water, 517 insulation against, 733 Friction, of air. In pipes. 566, 567 in chimneys, 185 coefficients, 567 factors, 393 heads in pipes, 336 in heating units, 412 losses in ducts, 565, 567, 571 in water pipes, 791 Fuel, fuels, 165; (see also Anthracite, Coal, Coke, Gas, Lignite, Oil) bed, draft loss through, 189 burning equipment, automatic, 201 burning rate charts, 238 consumption, 229, 236 oil gages, 221 oil, heating value, 174, 660 oil specifications, 174 requirements, of buildings, 236 degree-day method, 231 theoretical method, 230 utilization of, 229 Fumes, 79, 824 industrial exhaust systems, 633 toxicity of, 83. Fundamentals of heating and air conditioning, 1 Furnace, furnaces, 824 capacity, 383 design of. 173, 211, 246, 377, 383, 394,400 door slot openings, 486 gas-fired, 222 hand-fired, 173 performance curves of. 385 types of. 221. 393, 403 volume, 824 for warm air systems, 393 Furnacestat, 399 G Gage, gages, draft, 808 fuel oil, 221 pressure, 824 steam, 258 vacuum, 808 Galvanometer, 809 Garage, garages, air flow necessary in, 676 A.S.H.V.E. ventilation code, 679 . heaters, for, 224 Gas, gases, burner control, 698 burning rate chart, 239 calorific value, 141, 176 in chimneys, 183 combustion constants. 659 constant for dry air, 8 flue, analysis, 816 fuel, manufactured, 176 natural, 176 properties of, 176 inflammability, 81 requirements per degree day, 237 scrubbers, 86 toxicity of, 83 Gas-fired appliances, 221 automatic control of, 225, 698 boilers, 222, 245, 456 carbon monoxide produced by, 224 chimneys for, 196 classification, 221 combustion in, 224 conditioning unit, 462 control of, 225, 698 conversion burners,-224 furnace requirements for, 394, 900 heat from, 160 rate of gas consumption, 395 Tarings of, 226 sizing, 225 types of space heaters, 223 ' used with unit heaters, 443 warm air furnaces, 222 Gaskets. 366 Glass, heat transmitted through, 117, 152 solar radiation through, 152 Globe thermometer, 762 Glossary of terms. 819 Goitre, 599 Gonorrhea, 603 Grates, 824 areas of. 249. 255, 383. 402, 421. 824 of furnaces, 249, 255, 383, 402, 421 of stokers, 201 Gravity, circulation, 345 convectors, 263, 743 heat emission of, 263 gravity-indirect heating systems, 272 pressure heads, 344 specific, 3 steam heating systems, 275, (see also Steam Heating Systems) warm air heating systems, design of, 377 Grille, grilles. 824, (see also Registers) anemometer readings through, 812 for concealed heaters, 270 recirculating, 381 of roof ventilators, 672 velocity through, 401 for warm air systems, 381, 397 H Hartford return connection, 258, 278, 318 Hay fever, 604 Hazard of explosion, in operating rooms, 597 xiii