Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 238
Fig. 161. Mixing Damper for Regulating Temperatureof Air .Supplied by Double-Duct System. 194 HEATING AND VENTILATION 185 der is by-passed under the heater into the cold-air pipes. Mixing … e3 w -aaoo •j: i^ ootoa •rH ID P. 6 goo >> CObO a a S dampers are placed at the bases of the flues as already described, toreo-ulate the temperature in different rooms. 195 186 HEATING AND VENTILATION ELECTRIC HEATING Unless electricity is produced at a very low cost, it is not com-mercially…
Architecture · Building · Carpentry
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