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 146
a Plenum, by a Vacuum, or by a Mixed Movement. 247. Plenum Ventilation (Fig. 92). When air is blowninto any apartment by the force of the wind, or by any me-chanical power, it is said to be ventilated by a plenum, move-ment or impulse; and, when in this condition, it is filled tosuch an extent with… … nally from the superfluity within. These circumstances, andthe certainty of introducing, without mixture, the air that isconsidered best, form thegreat peculiarity of plenumventilation, which can hesustained only by theconstant use of machinery,as the influence of windis, in general, too un-certain…
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