Determination of maximum allowable humidity in indoor space...

Details Determination of maximum allowable humidity in indoor space... Determination of maximum allowable humidity in indoor space...

2007-02-20

2007-02-20

Norman, Marc (Department: 3744)

Refrigeration

Automatic control

Humidity sensor

C236S04400R

Reexamination Certificate

active

11016373

ABSTRACT:
Known psychometric characteristics of air are employed to achieve accurate indoor relative humidity control to prevent condensation inside a building envelope without complex mathematical computational requirements. An HVAC system control includes a simple control algorithm employed to calculate an effective delta (ΔT) based upon a single adjustment factor (A*) and environmental inputs. The effective delta (ΔT) is then used to determine a maximum allowable indoor relative humidity. The system control is then operable to selectively activate/deactivate a device to adjust an actual indoor relative humidity to a value less than the maximum allowable indoor relative humidity to prevent condensation inside the building envelope.

REFERENCES:
patent: 3951625 (1976-04-01), Follette
patent: 2005/0155363 (2005-07-01), Shah
patent: 2006/0100744 (2006-05-01), Sharma et al.

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