Document OzqXDyp42ozvwy4evJ529p0ML

Heating Condensers (continued) design data, 814 .evaporative,.872 water cooled, 872 Condition line, 60, 315 Conductance, 3,' 167, 170, 179 air space, 170, 178 building materials, 171,178 ' insulators, 171, 178,649 : soil, 169 surface, 175, 654 '- Conduction, 3, 89dirying methods, 1070 electric heaters, 953. equation, 90 steady-state, solutions, 101 : Conductivity. 3, 89, 174, 178' batt type,insulation, 171, 178 building boards, 171,178 building materials, 174, 178 . homogeneous materials, 169-' insulating materials, 171, 172, 178, 179, 649 insulation blankets, 172,178 insulators, 172, 178, 649 . loose-fill insulation, 172, 182 masonry materials,. 171, 178plastering materials, 171, 178 rigid insulation, 172 roofing construction, 172 soil, 173, 174 woods, 172, 179 Conductor, 3 Conduits for piping, 667 Connections, boiler, 400, 512 heating unite, 524 , Control, controls., absorption unite, 904 actuated, 897 actuating, 896 . adsorption units, 904 airborne infection; 132 all-year conditioning, 678, 901, 906 application, 898 automatic, 482 , 895 fuel appliances, 361, 899 temperature, 896 basic types, 895 central fan system, 677, 904 all-year system, 677, 905 heating cycle, 682 coal-fired plant, 899 compressor, 876, 904 cooling unite, 903 damper operator, 898 dehumidification, 903, 904 dehydrating equipment, 865 ' design, 911 designation, 895 draft, 333 electric heating, 899 electronic, 909 equipment for motors, 927 fan, 768, 904. gas burner, 899 gas-fired appliances, 899 heating unit, 899 high temperature, 551 hot water heating, 902 hot water supply, 1113 humidity, railway cars, 1082 ice bunker, 904 indicating, 897 individual rooms, 1092 limit, 900 modulating, 895, 901 motor, 913 oil burners, 899 panel heating, 907 circuit balance, 908 inertia, 907 night temperature, .908 typical systems, 909 pneumatic systems, 895 rate of biochemical reactions, 1019 Ventilating Air Conditioning Guide 1955 Control, controls (continued) rate of chemical reactions, 1017 rate of crystallization, 1019 recording, 897 refrigeration equipment, 874, 903 compressor type, 904 ice cooling, 904 well water, 903 regain, 1016 relay, 898 residential systems,- 899 room, 910 room thermostat, 900, 910. safety, 877 service water- temperature, 1113 ship control, 1092 single phase -motor, 926 . solenoid valves, 876 sound, 931 squirrel-cage- motor, 924 steam heating, 901 . steam jet system, 904 stoker, 369, 899 system, 901 temperature, 895 . .> terminology, 895-898. . - thermostats, 896 - two-position control, 895 types, 895, 896- .. unit cooler, 903,. unit heaters, 902 unit systems, 901, 902, 903 unit ventilators, 903 valves, 525, 629, 897 ' ventilator, 235 volume, 713 warm air system, 900 zone, 901, 910 Controllers, 895 functions, 895 - types, 895 Convection. 3, 89, 99 / equation, 91 unit conductances, 93 Convector, convectors, 3, 553. 557 correction factor, 558, 560 heat emission, 560 . heating effect, 560 induction, 684, 685 ' ratings, 558 Converging vanes, 706 Conversion burners, 379 uations, 15, 206 era, 603, 613, 873 Cooling. 269, 596 air conditioning unite, 603, 1122 atmospheric water, 797' coil selection, 831 evaporative, 685 load, 269, 681 methods, 1119 ' performance of coils, 837, 839 ponds, 805 residential, 1119,1122 sensible, 686 spray, 803, 805 effect of wind, 806 make-up water, 821 size of equipment, 807 ' winter freezing, 822 systems, 677, 1080, 1084 towere, 804 atmospheric, 807 design, 813, 814 mechanical, 809 operation, 821 performance, 816 selection, 819 unite, 603 component parts, 604 control, 610 definitions, 603 defrosting, 614 design, 604 XIV Cooling (continued) performance, 603, 611 ratings, 610, 614, 615 remote, 608 sound isolation, 607 types of, 613 . . water,i805, 812 water piping, 1104 . Copper elbow equivalents,-529 Copper tube dimensions, 620 Core area, 691, 1143 . Corrosion. 619. 621, 971 < air ducts, 990 atmospheric, 989 ' boilers, 962, 989 ' cathodic protection, 991 coal storage equipment, 989 oold water, 972 oondensates, 973, 974, 987, 988 flue gas, 357 '' flues, 989 heating systems', 981 hot water,-97$ - industrial exhaust ' systems, 1046 minimizing condensate, 987 pipe, 983,990 .. prevention, 975,-1048 - - refrigerating systems; 986 - underwater, 983 , Cost of air conditioning, 995, ' 1124 ' amortization, 995 - - condenser water, 1002 first, 995 . fixed charges, 995- heating, 1004 interest, 998 '< installed, 996 insurance, 999 labor,'1000 -. maintenance, 999 owning and operating, 1001 rent, 999 servioe, 999 taxes, 998 refrigeration equipment, 1001 water, 1000 Crack length method, 223 used for computations, 261 Crystallization control rate of, 1019 Cylinder dryer, 1072 D Dalton*s rule. 28 ! Damper, dampers, 334, 469, 677, 709, 715, 769, 897 Darcy formula, 69- Decibel, 931 Definitions, 1 Defrosting, 614 Degree-day. 3, 441 for cities. 443, 452 formula for, method, 442 industrial, 452, 453 operating unit,- 450 . unit fuel consumption, 448 Degree of saturation, 8, 25, 31 Pehumidlficatlon. 678,801,885 air conditioning unite, 608 air washers, 801 coil selection, 823, 833 comparison of methods, 885 control, 889 definitions and methods, 885 equipment, 801, 885, 889 performance, 888 estimating loads, 892 liquid methods, 890, 891 moisture load, 892 ships, 1091 solid methods, 887, 889 vapor transfer, 894 Dehumidifying agents, 885 sorbente, 885 Index to Technical Data Section Debumidlfication (continued) Drying, 1017, 1051 Dust collectors (continued) absorbents, 885 application of hygrometry, settling chambers, 790 . adsorbents, 885 1065 scrubbers, 789, 791 . Density of air, 1 calculations, 1066 testing methods, 779 Design conditions chart, 1065, 1067 types, 788 summer, 270, 273. conduction, 1071 wet, 789 winter, 245-252 constant rate period, 1055,1057 centrifugal, 791 Dew-point' apparatus temperature,. 270, convection, 1071 - critical moisture, 1062 effect of air velocity, 1056 - packed tower, 791 ..." spray towers, 791 washers, 791 313 flue gas, 358, 989 equations, 1062 ' equilibrium moisture, 1063 wet filters,. 791 Dynamic head; 5, *726 . temperature, 9,-26, 1146.- equipment, 1070 losses, 726 Dichiorodifluoromethane, 849- example, 1074 ' 851,478, 879 Dielectric heating, 967.. - external conditions, 1053. factors influencing, 1052'.. 'E ; 1 Direct expansion coils, 826 fired unit heater, 587 indirect heating unit, 3'" radiator, 7 return system, 3, 534 Disc fan, 757 Distribution of air (see - Air Distribution), 455, 467, 677, 691, 1080,1088 falling rate period, 1059 internal conditions, 1053" -mechanism of, 1052 methods, 1070 -. conduction, 1071' convection, 1071, - -; radiant, 1070 periods, 1054 _, problem, 1074. . radiant, 1070 %. surface teroperature,-;1056 EDR (Equivalent direct radia tion). 7. 496,! 500,-502, 504, 553 . - defined, 7, 553, 558 Effective temperature^ 9,-122 chart, 122, 126 index, 122 Efficiency / boiler, 396 conversion burner furnace, 408 District beating; 663 condensate return,-669 . systems, 1051 ,* .:/ terminology, 1051 . seasonal, 438 Ejector nozzles, 709 Elbow -4-: meters 675 . T; operation, 673; ; - pipe insulation, 669 piping, 659, 671 ... Duct, ducts, 457-459', 469,'713 air velocities in, 468, 738,-1034, 1042 approaches to outlets, .713 attenuation,'939 : - copper equivalents,. 529 \/ - friction lo6ses, 529,730, -731 - iron equivalents, '501, 529 conduits for, 660 . inside, 671 sizes, 667 area change, 732 attenuation, 939, 943 circular equivalents, 725 sheet metal, equivalent, 726728 tunnels, 670 - .. steam requirement, 663. zoning, 673 Diverging vanes, 706 Domestic oil burners, 369 Door, doors coefficients of transmission, 195 leakage, 223, 225 natural ventilation, 234 Down-Feed one-pipe riser, 3, 6, 487 steam heating, 4, 493 system, 4, 485 Draft, drafts, 4, 415 available, 417, 422 calculations, 415 chimney, 415 control, 334 construction details, 746, 1043 design, 457,.470, 738, 739, 1038 design methods, 739- equal friction, 740. static regain, 742 velocity reduction, 739 dynamic losses, 726. elbow friction losses, 730 exhaust design, 1038 friction losses, 721 heat loss coefficients, 750, 753 lining, 942 maintenance, 752 measurement of velocities, 1139 noise transmitted, 934 pressure changes, 735 pressure loss, 721, 730 recirculating, 457, 459, 463, 716 rectangular equivalents - of Electric, electrical : baseboard, 957 control systems, 899 convector, 957 . demand control, 968 . dielectric heating, 967 heat applications, 954 heating, 953 calcinating capacities, 965 central,' 960, 961 control, 955, 959 domestic water, 964 equipment, 953 heat pump, 961 induction, 967 power problems, 967 . resistors, 8, 953. systems, 955 units, 954 hot water heating, 960 factors, 416 Sral equation, 415 ,4 industrial chimneys, 417 ' mechanical, 415 natural, 227, 415 regulation, 333 residential chimneys; 421 requirements, 333, 416, 429, round, 432, 725 resistance, 721 roughness correction, 725 sizing, 712, 741 sound absorbers, 940 symbols for drawing, 17. system design, 457, 461, 465, 721 weight, 749, 750 induction heating, 967' installation methods, 955 . motor design limits, 914 / panel heating, 568,958;'959,960 precipitators, 779, 792 radiant convector, 957 radiant heating, 568, 957 resistors, 953, 958 steam radiator, 958 appliances, 430 theoretical/415Drawing symbols, 17 Drip, drips, 4, 487, 521 Drum dryer, 1072 Duct sizing, 712 i equal friction method, 740 general rules, 458, 470, 739 static regain method, 742 velocity method, 739 systems, 913, 955 voltage ratings, 914 Electricity, static, 139, 1020 . Emissivity, 95, 170 Enclosed radiator, 563 Enthalpy, 4, 24, 30, 51 7; Dry air, 1 composition, 25, 350 filters, 779 properties of, 30 velocity head, 729 Dry-bulb temperature, 9 Dry cooling coils, 823, 837 Dry return, 8, 485 Dust, 4, 151 combustible, 161 concentrations, 155 determination, 154 filters. 775, 784 , 790 precipitators, 779, 792 removal, 775 size, 153 free, 4 specific, 4, 30 Entropy, 4, 30, 51 mixing, 51 Equivalent evaporation, 4 Estimating fuel consumption, 437 Eupatheoscope, 1148 Dust collectors. 775, 786 Evaporative Dryer, dryers, 1070 cabinet, 1072 calculations, 1066 application, 775, 784, 788 centrifugal, 789 cyclone, 790 condensers, 872 cooled, unit conditioners, 603 cooling, 685 compartment, 1071, 1072 cylinder, 1072 cloth, 790 degree of dust removal, 787 Evaporators, 873 1 drum, 1072 rotary, 1072 i spray, 1073 tunnel, 1072 electrostatic, 792 fabric, 790, 792 factors affecting selection, 787 inertial separators, 789 Excess air, 334, 348, 352, 381 Exhaust opening, 716, 1032, 1042 measurement of velocities. 1048, 1143 XV 1L_