. The principles of ventilation and heating and their practical application. based. The work tobe done is essentially the same in each, viz., to force 30,000 cubic feetof air into the building per minute, said air being at a sufficient tempera-ture to heat the building to 70° F., with the thermometer at 15° belowzero outside (or, as in the modified specification, at 10° below zero out-side). The essential difference between the two sets of specificationsconsists in the amount of heating surface to be supplied. In the originalspecifications, it is required that there must be at least one square
. The principles of ventilation and heating and their practical application. based. The work tobe done is essentially the same in each, viz., to force 30,000 cubic feetof air into the building per minute, said air being at a sufficient tempera-ture to heat the building to 70° F., with the thermometer at 15° belowzero outside (or, as in the modified specification, at 10° below zero out-side). The essential difference between the two sets of specificationsconsists in the amount of heating surface to be supplied. In the originalspecifications, it is required that there must be at least one square footof radiating surface to 65 cubic feet of space, which would make about14,300 square feet of radiating surface to the entire building, and, also,that it is to be arranged to run at a pressure of five pounds, or less whendesired. The modified specifications require that the total area ofheating surface is to be equivalent in condensing power, in combinationwith other parts of the apparatus, to 31,164 lineal feet of i-inch pipe, or X56 VENTILATION AND HEATING. <^:. Figure 47.—SECOND FLOOR PLAN, UNION LEAGUE CLUB, AS HEATyrD AND VENTILATED BY F. TUDOR ft CO.—PEABODY & STEARNS, ARCHITECTS. /.—Inlet.(3.—Outlet. r.—Top.^.—Bottom. .-.•.•.—Foul relative distribution of air is shown by the numbered arrows. VENTILATION AND HEATING. 157 9,800 square feet exposed to an atmosphere of 65°, and that the appar-atus is to be arranged to work at either high or low pressure. It will be seen that the plan proposed by Mr. Tudor and accepted bythe committee provides for a comparatively small amount of radiatingsurface, which must be raised to a correspondingly higher of the special difficulties which this involves are done away withby the expedient of placing the greater part of the radiating surfacebetween the fan and the outer air, so that this part of the surface can behighly heated, and the fan can be relied on to secure a thorough mixtureof
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Keywords: ., bookcentury1800, bookdecade1880, booksubj, booksubjectventilation
