Automatic temperature and humidity regulation – Hot-air furnace – Air and fire control
Reexamination Certificate
2006-09-12
2006-09-12
Tanner, Harry B. (Department: 3744)
Automatic temperature and humidity regulation
Hot-air furnace
Air and fire control
C236S01500E, C431S012000, C431S076000
Reexamination Certificate
active
07104460
ABSTRACT:
A method of determining the amount of air flowing through an outside air damper of a recirculating air heater includes the steps of sensing an amount of airflow flowing through the damper, recording the amount of airflow and a damper position value at a plurality of damper positions, and interpolating a curve relating the amount of airflow to the damper position for all damper positions between a minimum damper position and a maximum damper position. Once the amount of air flowing through the outside air damper is determined from a position on the curve, the concentration of carbon dioxide (CO2) within a building space can be calculated and/or determined to be within acceptable limits.
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Masen Mark Geoffrey
Mimick Frank Phillip
Schlachter John James
Sundberg David Ray
Howard & Howard
Maxitrol Company
Tanner Harry B.
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