Automatic temperature and humidity regulation – Mixing fluid of dissimilar temperature – Plenum type
Patent
1986-05-27
1988-03-15
Bennett, Henry A.
Automatic temperature and humidity regulation
Mixing fluid of dissimilar temperature
Plenum type
236 49, 237 55, G05D 2300
Patent
active
047307714
ABSTRACT:
This invention provides a device for meeting the demand of a forced-air furnace for make-up air in a building, the make-up air being available from a duct leading from outside the building. The device takes warm air from the hot air plenum of the furnace and returns the air to the return air plenum. This flow of air is caused by a differential pressure between the two ducts when the furnace is operational and operates a valve element which normally closes the duct carrying outside air and opens to permit flow of this air in response to the passage of warm air between the hot air and return plenums.
REFERENCES:
patent: 3009643 (1961-11-01), Dibert
Shepherd Charles G.
Squires Thomas E.
B. D. Wait Co. Limited
Bennett Henry A.
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