Pressure dependent variable air volume control strategy

Details Pressure dependent variable air volume control strategy Pressure dependent variable air volume control strategy

1997-07-08

1998-06-23

Wayner, William E.

Automatic temperature and humidity regulation

Ventilator type

Electrically actuated

165217, 236 28D, 454255, G05D 1500, F24F 700

Patent

active

057693153

ABSTRACT:
A control strategy for rejecting supply air temperature disturbances in variable air volume air conditioning units using staged DX cooling. The strategy, and corresponding system, minimizes supply air temperature disturbances by controlling zone air dampers through a mapping of zone heat transfer requirements and damper positions. The mapping maintains a zone temperature setpoint, even with relatively large temperature swings caused by system-supplied conditioned air. The primary parameter that is controlled by the strategy of the present invention is a heat transfer rate associated with a temperature-controlled zone. The control strategy of the present invention estimates the zone heat transfer rate at a particular sampling instant and controls the damper position in response thereto.

REFERENCES:
patent: 5344069 (1994-09-01), Narikiyo
patent: 5400963 (1995-03-01), Ishikawa
patent: 5558274 (1996-09-01), Ben-Aissa et al.

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