![Handbook for heating and ventilating engineers . •a. Plenum System. b. Exhaust System. Fig. 85. slightly higher than the atmosphere, and hence all leak-ages will be outward through doors and window crevices.A Handbook for heating and ventilating engineers . •a. Plenum System. b. Exhaust System. Fig. 85. slightly higher than the atmosphere, and hence all leak-ages will be outward through doors and window crevices.A](https://l450v.alamy.com/450v/2an0we2/handbook-for-heating-and-ventilating-engineers-a-plenum-system-b-exhaust-system-fig-85-slightly-higher-than-the-atmosphere-and-hence-all-leak-ages-will-be-outward-through-doors-and-window-crevicesa-system-so-installed-is-usually-called-a-plenum-syficm-thefan-may-however-be-of-the-exhausting-type-fig-85-band-placed-in-the-attic-with-which-ducts-from-the-roomsconnect-so-that-the-fan-tends-to-keep-the-air-of-the-build-ing-at-a-slight-vacuum-as-compared-with-the-atmospherethus-inducing-ventilation-air-is-then-supposed-to-enterthe-basement-inlet-pass-over-the-coll-surface-an-2an0we2.jpg)
Handbook for heating and ventilating engineers . •a. Plenum System. b. Exhaust System. Fig. 85. slightly higher than the atmosphere, and hence all leak-ages will be outward through doors and window crevices.A
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Mechanical Ventilation Types: Exhaust, Supply, Balanced & Energy Recovery - Home Ventilating Institute
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