HEATING VENTILATING AIR CONDITIONING GUIDE 1940 HORIZONTAL SUPPLY MAINS The horizontal mains supplying the risers at the top of a down-feed system must be liberally sized unless the house tank is set at a much higher elevation' than usual:' To provide a gravity head on the highest fixtures of 15 lb per square inch it is necessary for the water line in the house tank to be nearly 40 ft higher, and with the line loss considered this, becomes about 45 ft.

fTSETIOgeKS HEATING VENTILATINC AIR CONDITIONING GUIDE 1940 SCOTT, Allison F.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 CONNECTICUT Bridgeport-- Earie.

HEATING VENTILATING AIR CONDITIONING CUIDE 1941 water in the direct return system among the several risers, it is necessary to introduce resistances to balance the circuit.

7 HEATINC VENTILATING AIR CONDITIONING CUIDE 1941 fan will be capable of delivering air against pressures that may not have been foreseen during the design of the duct system. 12.

HEATINC VENTILATINC AIR CONDITIONING GUIDE 1941 equal blackness is obtained.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 to obtain higher velocities and more uniform flow across the measuring section, it is sometimes possible to reduce the duct to a smaller cross section at the Pitot station by use of a long transition piece.

HEATING VENTILATING AIR CONDITIONING CUIDE 1942 Table 4.

HEATING VENTILATING AIR CONDITIONING CUIDE 1942 the radiator and the air in the room, and is expressed in Btu or Mb per hour.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 but in most types of buildings this load will be relatively small compared with the heating load and will seldom occur at the time of the heating peak.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 Table 9.

HEATINC VENTILATING AIR CONDITIONING CUIDE 1942 selection.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1942 COMBINED FORCES OF WIND AND TEMPERATURE - Equations for determining the air flow due to temperature difference and wind have already been given.

HEATINC VENTILATING AIR CONDITIONING CUIDE 1943 Table 2.

HEATING VENTILATING AIR-CONDITIONING CUIDE 1943 Table 6.