Pressure independent control for air distribution system

Details Pressure independent control for air distribution system Pressure independent control for air distribution system

1991-03-28

1992-06-23

Tapolcai, William E.

Automatic temperature and humidity regulation

Thermostatic

Expanding solid

137486, 1374875, F24F 1310

Patent

active

051235927

ABSTRACT:
An air terminal adjustment method to achieve an air flow setpoint wherein the time to achieve the setpoint is determined by calculating the difference between the flow setpoint and an actual flow and then dividing the difference by a change in flow per unit time. The time to achieve the setpoint adapts to changes in static pressure in the air terminal.

REFERENCES:
patent: 4026321 (1977-05-01), Kahoe et al.
patent: 4375224 (1983-03-01), Noll
patent: 4643353 (1987-02-01), Harris
patent: 4705066 (1987-11-01), Gut et al.
patent: 4844149 (1989-07-01), Dreibelbis et al.
patent: 4909308 (1990-03-01), Dreibelbis et al.
patent: 4928728 (1990-05-01), Nakane et al.

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