. The principles of ventilation and heating and their practical application. & 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
. The principles of ventilation and heating and their practical application. & 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 this superheated with cooler air. So far as the heating is concerned, this plan has proved fairly satis-factory, but the ventilation of the theatre cannot be said to be a Figure 48. A sufficient amount of air is not introduced, and that which does comein is not sufficiently distributed. By reference to Figure 48 it will be seen that the seats remote fromthe stage must obtain very little fresh air. With reference to the difference as to amount of heating surfacecalled for by the original specifications, and that provided for in thespecifications proposed by the contractor, it is to be remarked that it ismuch better that the amount of heating surface should be specified bythe architects, or by an engineer who is not connected with any estab-lishment for the supply of heating apparatus, than to follow the usualrule and let each bidder determine for himself the amount of radiatingsurface which he will supply. 158 VENTILATION AND HEATING. But the requirement that a certain amount of radiating surface shallbe furnished will be of little use, unless the various bidders are satisfiedthat
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