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Illustrations of the theory and practice of ventilation : with remarks on warming, exclusive lighting, and the communication of sound (1844)

Reid, D. B. (David Boswell), 1805-1863 · London : Longman, Brown, Green, & Longmans · leaf 159

An illustration from Illustrations of the theory and practice of ventilation : with remarks on warming, exclusive lighting, and the communication of sound, 1844, leaf 159
282. Fig. 121. Circular moveable, or rotatory ventilators,as they are termed, are often placed in Fig. 121.windows. They act well in so far as theydistribute the air that passes throughthem, instead of permitting it to moveoffensively in a less divided stream. Inother respects they are of little or…

Ventilation · Heating · Lighting · Architectural acoustics

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