146 CHAPTER 7_______ i <- Then substituting values for Aa, A, and G, N may be found as follows: 10.7 X 151V _ 0.243 X 1740 = 2 5 fr0m Which> N = 6 58 1948 Guide (2) This establishes the maximum whole number of coil rows that can be used as 6 and it is now possible toi determine the actual location of the exit air conditions from Equation 7 by solving for the actual value of ti -- 1dpi for a 6 row coil. 10.7 X 15 X 6 , 102 - 80 0.243 X 1740 081 *i " fdps = 2.275 This establishes values of 9.78 for 7-----7^ = R and 2.25 for h -- fdm. h -- *dpi (3) Next, the exit air condition at 57.3 F dry-bulb and 56 F wet-bulb as shown at B, is found by locating a point on the load ratio line at q horizontal distance of 2.25 dry-bulb degrees from the saturation curve

292 CHAPTER IS *1948 Guide an ^1'xa7JlP^e 71.

486 CHAPTER 25 . 1948.Guide ' connections are led as shown.

j-.y i.-' 92 Heating Ventilating Air; Conditioning Guide j948*- RODWELL, Robert D.

Heating Ventilating Air Conditioning Guide 1949 'Pipe, piping {continued) economical thickness insula* tion, 591 expansion, 566 fittings, 561 fitting equivalent, 477, 505 flexibility, 566 hangers, 567 heat losses, 579 hot water heating systems, 603 inside dimensions, 562 insulation prevent freezing, 589 leader sizes, 436 low temperature insulation, 588 materials, 561, 982 overhead distribution, 467, 699, 954 refrigerant sizes, 775 . sizes, 471, 504 high pressure steam, 479 hot water forced circulation, 515 hot water gravity circula tion, 513 indirect heating units, 486 low pressure, 477 maximum velocity, 475, 510 one pipe riser, 478 orifice systems, 471 pressure drop, 478-483, 505 sub-atmospheric systems, 486 tables for, 480 two-pipe riser, 478 two-pipe vapor systems, 484 vacuum systems, 485 water supply systems, 947 steam distribution, 461, 595, 599 steam beating systems, 461 supports, 567 symbols for drawing, 17 ' tax, 380, 381 thread connections, 567 threads, 667 tunnels, 599 underground insulation, 596 unit heater connections, 462, 553 water supply, 947 Pitot tubes, 95, 200 Plate cell, 846 Plenum absorbers, 845 Plenum chamber, 6 Pneumatic control systems, 663 Pressure {continued) regulators, 486, 598, 664 static, 7 taps, 88 total, 7 vapor, 7 velocity, 7 Prime surface {see Healing Sur face), 8 Propeller fan, .631 Protective Coatings, 982 Psychrometer, 7. 53 Psychrometric chart, 226 Pump, pumps condensate return, 490 mechanical circulators, 503 vacuum hwating, 490 controls, 491 piston displacement, 491 Pyrometer, 7, 196 optical, 196 radiation, 196 R Radial flow fan, 631 Radiant drying, 914 Radiant heating, 615 application methods, 618 * calculation principles, 620 oontrol, 629 electric, 620 fundamental computations. 617 hot water, 618 mean radiant temperature. 615 measurement of, 628 objective, 617 operative temperature, 616, 628 steam, 619 warm air, 618 Radiation, 7 baseboard, 521 equation, 106 load, 380 shape factor, 106 Pollution of air, 179 Polyphase motors, 678, 685 Ponds, 717 Potentiometer, 6 Power, 6 Precipitators, 650, 657 Pre-cooling, 867 Preheating, 857 Premature infant nurseries, 239 Pressure absolute, 6 atmospheric, 1 gages, 197 foes, water supply 947 measurement, 197 barometer, 198 ` piping, - Radiator, radiators, 7, 521 baseboard, 521 codes, 524, 991 concealed, 523 connections, 499, 500 correction factor, 525 . direct, 7 effect of paint, 526 enclosed, 528 gas-fired, 366 heat emission of, 521 heating effect, 526 heating up, 528 output of, 521 panel, 6 ratings, 524 recessed, 7, 523 tube, 521 types of, 521 warm air, 366 Railway air conditioning, 927 air distribution, 928 air cleaning, 928 humidity control, 930 summer systems, 928 temperature control; 930 ventilation, 928 winter systems, 927.

304 CHAPTER IS 1949 Guide Table 20.

324 CHAPTER IS * 1949-Guide as Affected by Solar Radiation, by F.

434 CHAPTER 21 1949 Guide in balancing the air distribution of the system, a damper should be placed in each leader pipe except one, this latter leader preferably being connected to a room heated at all times, such as a living room.

646 CHAPTER 32 1949 Guide ' Fan Engineering, Buffalo Forge Col Heating/ Ventilating and Air Conditioning, by Harding and Willard, Revised Edition; 1932 (John Wiley & Sons).

936 CHAPTER 48 .. 1949 Guide quired, control response must be phenomenally fast; For'example,: on some the air going to the cabin from jet engine compressor can change temperature at rate of 150 deg per second.

..vi-.ry, 1043 Industrial Hygiene Foundation, 4400 Fifth Avenue, Pittsburgh, Pa.

Air System Equipment Fans and Bumm The Peerless Electric Company Warren, Ohio FANS AND BLOWERS BACKWARD CURVE BLOWERS--In sizes from 12J in. to 36} in.; selflimiting hp characteristics; NAFM standards; dynamically balanced wheel; heavy cast-iron hub; nothing in air stream; quiet entry, passage and exit; job-matched motor; convertible dis charge; belt drive or direct drive.

EXHIBIT ASBESTOS FIBER VENDORS Advocate Mines, Ltd.

June* 1941 Air Ifyglcne Foundation, 4400 Fifth Avenua, Pittsburgh, Pa.

Digest of Industrial Hygiene . 22.