842 CHAPTER 47 1948 Guide of the air and the hygroscopic properties,of .the material as explained in Chapter 45.

882 CHAPTER 50 - ,1948 Guide , TABLE 8..

Heating Ventilating Air Conditioning Guide 1949 Enthalpy, 4, 35 free, 4 specific, 4, 35 Entrance loss, 801 Entropy, 4, 35, 50 mixing, 50 Equivalent evaporation, 4 Estimating fuel consumption, 417 Eupatheoscope, 208, 628 Evaporative condensers, 769 cooled, unit conditioners, 705 cooling, 867 Evaporators, 771 Excess air, 335, 362, 367 Exhaust opening, 803, 896 measurement of velocities, 203, 899 Exhaust systems, 895 air flow measurement, 899 axial velocity formula, 899 classification of, 895 corrosion, 907 duct construction, 904 duct design, 904 duct resistance, 906 duct velocity, 904 ducts for, 904 air velocities in, 904 construction, 904 design, 904 resistance, 906 dust filters, 647, 656 efficiency of, 906 hoods, 896 air flow, 899 air velocity, 897 axial velocity formula for, 899 capture velocities, 897 chemical laboratories, 902 design principles, 896 kitchen, 903 large open, 901 lateral exhaust, 902 low velocity systems, 900 spray booths, 902 suction, 897 velocity contours, 900 resistance of, 906 suction requirements, 897 types of fans, 907 . velocity requirements, 897 Expansion ' factor, gases, 92 of pipe, 500, 566 orifice plates, 87, 88 tank size, 517 tanks, 510, 515 valves, 773 F Fan, fans, 387, 388,.631 arrangement of drives, 642 attic, 644 ' location, 645 Fan, fans, attic (continued) types, 644 axial flow, 631 centrifugal, 631 characteristic curves, 634 control, 643 designations, 641 efficiency, 634 furnace system, 443 laws, 632, 633 motive power, 644 noise generated, 640, 841 . performance, 632 radial flow. 631 selection or, 639 air conditioning systems, 639 industrial exhaust systems, 907 speed, 632, 640 system "characteristics, 638 volume control, 643 Fanning formula, 77 Fever therapy, 241 equipment for production of, 241 . film conductance, 115, 122, 124, 152 coefficient, 115, 152, 155 Filter, filters, 388, 647 air conditioning units, 701 dry air, 647, 650,' 929, 933 dust, 647' installation, 654, 933 performance, 651 selection, 653 testing, 651 viscous automatic, 649 viscous impingement type, 648 Fittings, 438, 450, 561 pipe allowance, 438, 450; 477, 505 types of, 438, 450, 568 , Flame temperature, 331 Flexible mountings, 853 Float trap, 492 Floor . cooling uoit, 708 heat transfer coefficients, 137, 142 unit heater, 548 Flow coefficients, orifices, 85, 87, 88 compressible fluids, 81 critical, 84 \ measurement liquids, 91 orifices, 91 Pitot tube, 95, 199 steam, 90 Flow meters, 601 Flue gas loss, 335, 339 .

200 CHAPTER 11; 1949.

510 CHAPTER 24 . 1949 Guide the longest supply and longest return piping.

558 CHAPTER 26 1949-Guide cient to warm the air needed to meet the ventilating requirements, a corre sponding reduction may be made in the amount of direct radiation installed.

958 CHAPTER 50 " `1949 Guide equipment, and-controls, or may consist'of1a: separate storage tank and external direct-fired water heater,1 which may be a so-called side-arm heater for small capacity or a gas-fired boiler for larger capacity.

1014 1949 Guide National Radiator Co., The, 1254- INSTRUMENTS.

AAL ^Iellon Institute of Industrial Research UNIVERSITY OF PITTSBURGH % PROGRESS REPORT for the reek ended June 1*, 1947 INDUSTRIAL HYGIENE FOUNDATION Subjects under which report is to be indexed Industrial Fellowship No. 2*9-1?

Mellon Institcte of Industrial Research UNIVERSITY OF PITTSBURGH PLAINTIFF'S EXHIBIT PROGRESS REPORT for the week ended Janus I.NlUSTfTAL riYuIi-.i r OUSDi.riOii Subjects under!

c entiai fT1' Mellon Institute of Industrial Research U.vi vkhsitv of Pittsuukgh PROGRESS REPORT : or -*ie-----wek- .ended------- Hoyanhf'r PI, IQ.'.P Subjects under which report ia to be indexed rlYDUNn i3LIMliJrL3i{------Industrial Fellowship No. 153=1 3 copies mede: 1 - Mellon Institute 2 - Industrial Hygiene file An industrial hygiene survey was made at the Barberton plant of the Pittsburgh Plate Glass Company.

932 CHAPTER 41 eft = 10 log* (2J where I = the sound intensity in watts per square centimeter.

494 CVrHt IATUPTIELfRX 4<t6U H, W.

446 29lh Saiional Safely Congress K.

I 163.; Well, now, coming on from that -- next slide - we!