HEATING VENTILATING AIR CONDITIONING GUIDE 1941 Estimating Coal or Coke Consumption Coal or coke consumption estimates cari be made in exactly the same way as for oil.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 SELECTION OF EQUIPMENT The type of system to be used is controlled by the existing load con ditions, the degree of perfection expected from the system, and the designer's knowledge of the operating characteristics of the various types of equipment.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 SELECTION OF FANS The following information is required to select the proper type of fan: 1.

HEATINC .VENTILATING AIR CONDITIONING GUIDE 1941 other experimental data which have been presented, the; usual endeavor is to secure not less than 90 per cent efficiency for underground piping.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 Armstrong Machine Works, 1032- AIR VELOCITY REGULATORS ATTIC FAN COOLERS (S*F0IU 1033 C.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 on the driving motor, or fan, may be changed to vary the speed of the fan thus altering the air volume.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1942 By-pass: A pipe or duct, usually controlled by valve or damper, for short-circuiting fluid flow.

HEATING VENTILATING AIR CONDITIONING CUIDE 1942 Micron__ - V- (mu) Miles per hour.........................:.......................................................................................... ....mph Millimeter........................................... .......................................................................................mm Minute......................... ...................... --................. -.............-.................................................. min Molecular weight............................. ................................................................................. mol. wt Mol.mol Ounce----------------------- --------------------- ------------------------------------------------------------------- --oz Pound.........................-......--.................................................. ................... .............................. lb Power, Horsepower, Work per unit time._________________________ ______ ____ __ ___ P Pressure, Absolute pressure, Gage pressure, Force per unit area........................................p Quantity (total) of fluid, water, gas, heat; Quantity by volume; Total quantity of heat transferred--------------------------------------------- Q Quality of steam, Pounds of dry steam per pound of mixture_______________ __________x Revolutions per minute---------------------------------------- rpm Saturated liquid at saturation pressure and temperature, Liquid in contact with vapor______ ____________________ __________ _____________________ Subscript t Second____ ........................................... -.............. --.....-...........................-...............................sec Specific gravity.............. ...................... ........................................................................... .......sp gr Specific heat.................................... .................. ..............................................................sp ht or c Specific heat at constant pressure--........... ..................................................... .......................cD Specific heat at constant volume--------------!...............

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 HATCH, O.

HEATING VENTILATING AIR CONDITIONING GUIDE 1943 The earliest investigation into the relation between pressure, specific volume, and temperature for gases was.made by Boyle (1661) who was able to confirm the hypothesis that the volume of a given weight of gas should vary inversely as the absolute pressure if temperature is main tained constant.

HEATING VENTILATING AIR CONDITIONING GUIDE 1943 only for persons having an average surface area of'19.5 sq ft or that of the average adult American male, 5 ft 8 in. in-height and weighing 150 lb, and will therefore not apply to many audiences made up largely of women or younger persons.

HEATING VENTILAT1NC AIR CONDITIONING CUIDE 1943 A53 and A120 combines the schedule thicknesses of the American Standard for Wrought-iron and Wrought-Steel Pipe, A.5.A.

HEATING VENTILATING AIR CONDITIONING GUIDE 1943 order to prevent flooding of the lower dehumidifiers.

HEATING VENTILATING AIR CONDITIONING GUIDE 1943 collecting tank, or in a separate tank used for storage.

HEATING VENTILATING AIR CONDITIONING CUIDE.1944 circulated through the precooling coil where the entering air is cooled by the water and the heated water sent back to the reheating coil.