Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 118
DIRECT-INDIRECT SYSTEM OF WARMING, SHOWING ADJUSTABLE DAMPER. Ameiican Radiator Company. … DIRECT-INDIRECT METHOD OF WARMING TAKING A FRESH AIR SUPPLYFROM OUTSIDE AND PASSING IT UPWARD American Kadialor Comnauv HEATING AND VENTILATION SI It is often desirable to wanu a room at tilnes when ventilationis not necessary, as in the case of living rooms during the night, orfor quick warming in…
Architecture · Building · Carpentry
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