VENTILATION: Exhausting Hot Air From the Greenhouse Peak

Culture Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 8 years ago.

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Install a turbine generator as high as possible with a small fan under it blowing straight up; refer to A83-52
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Ventilation Comments
VENTILATION: Rate of Exchange On hot days the greenhouse needs one change of air per minute by exhaust fans. A78-606 0
VENTILATION: Size of the Vents They should be at least 10% of the roof area as a minimum. RMH 0
VENTILATION: With Solar Energy A solar chimney draws air vertically out of the greenhouse without machinery; build a flue out of three/eighths inch exterior plywood; for diagram, materials, method of operation; refer to OD88-30 0
VENTILATORS: Non Electric Self-automated ventilator units are moved by a heat-expandible mechanism, they need no electricity and are useful in case of electricity failure; some growers use them only. Ca85(l)-10 0

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