Handbook for heating and ventilating engineers . ble witli the olderforms. Both of these forms of fans are used in plenumwork, and are placed on the forcing side of the circulatingsystem just between the air intake and the heater coils,or just following the heater coils, and hence produce a pres-sure within the building or suite heated, so that leakagesare outward and not so detrimental to the good workingof the plant as in the exhaust system. The motive power for fans may be of four kinds,electric direct drive, steam engine or steam turbine directdrive, and belt and pulley drive, as shown in
Handbook for heating and ventilating engineers . ble witli the olderforms. Both of these forms of fans are used in plenumwork, and are placed on the forcing side of the circulatingsystem just between the air intake and the heater coils,or just following the heater coils, and hence produce a pres-sure within the building or suite heated, so that leakagesare outward and not so detrimental to the good workingof the plant as in the exhaust system. The motive power for fans may be of four kinds,electric direct drive, steam engine or steam turbine directdrive, and belt and pulley drive, as shown in Figs. 87, 88, 89and 90. Which of these drives will be the most appropriatewin depend entirely upon local conditions and the nature PLENUM WARM AIR HEATING 157 of the available power supply. The steam engine or steamturbine drive is perhaps the most common, since somesteam must be present for the supply of the heating coils,and since, too, the exhaust of the engine or turbine maybe used to supplement the live steam used for Art.
Size: 1405px × 1778px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectventila, bookyear1913
