Air Hygiene Foundation of America, Inc 4400 Fifth Avenue, Pittsburgh, Pa.

American Society of Heating and Ventilating Engineers Guide, 1930 The first requisite in any well-ordered heating system is a design which will give most nearly 100 per cent perfect heat.

American Society of Heating and Ventilating Engineers Guide, 1930 always available gas is highly desirable, as it saves the trouble of operating a steam boiler.

!

American Society of Heating and Ventilating Engineers Guide, 1931 Relative kinematic viscosity...;________ Time in seconds obtained from a vis cosity measurement with a specific instrument, from which viscosity may be computed by appropriate formulas______________ _______ ______ v/vw . / Symbols for General Thermodynamics Mechanical equivalent of heat______ ... j Heat equivalent of work________ 1/J or A Ordinary temperature, F or C (6 is pre ferably used only when t is used for Time in the same dis cussion)0 (theta) or t Absolute temperature, F abs or K..0 or (0 (capital theta) is preferably used ' only when 6 is used for ordinary temperature].

American Society of Heating and Ventilating Engineers Guide, 1932 to lower the indoor temperature about 3 deg as indicated by the Effective Temperature Line on the Comfort Chart.

American Society of Heating and Ventilating Engineers Guide, 1932 although at present data are lacking for accurately evaluating the effect of heat capacity on the refrigerating requirements of air-conditioned buildings.

American Society of Heating and Ventilating Engineers Guide, 1932 periods and from which it can flow back into the system during the cooling-down, periods.

American Society of Heatingand Ventilating Engineers Guide, 1932 damper operator No. 5 to open the intake damper from outside.

American Society of Heating and Ventilating Engineer's Guide, 1932 SCHOOL ROOM VENTILATION1 The entire field of ventilation presents no more important problem than the adequate and satisfactory ventilation of the average school room occupied for approximately six hours of the day by a class of 40 pupils and a teacher.

American Society of Heating and Ventilating Engineers Guide, 1932 the building for recirculation of the air when desired, and a duet system attached, to the fan outlet to convey and distribute the air to various parts of the building to be warmed by the apparatus.

;:T^ -A American Society of Heating and Ventilating Engineers Guide, 1932 LYMAN, Samuel E.

American Society of Heating and Ventilating Engineers Guide, 1934 and which are constructed of porous brick and lime mortar.

V American Society of Heating and Ventilating Engineers Guide, 1934 Centrifugal Fans and Blowers2 as adopted by the American Society of Heating and Ventilating Engineers and the National Association of Fan Manufacturers.

American Society 0/ Heating and Ventilating Engineers Guide, 1935 PROPERTIES OF STEAM Steam is water vapor which exists in the vaporous condition because sufficient heat has been added to the water to supply the latent heat of evaporation and change the liquid into vapor.