Cooling set point control

Details Cooling set point control Cooling set point control

2005-05-17

2005-05-17

Tanner, Harry B. (Department: 3744)

Refrigeration

Automatic control

Humidity sensor

C236S04400R

Reexamination Certificate

active

06892547

ABSTRACT:
Methods and apparatus for controlling the cooling set point value of a climate control system are provided. In one illustrative embodiment, a humidity error is determined as a function of the actual humidity in the inside space and a humidity set point value. The cooling set point value is then adjusted by a cooling offset that is a function of the humidity error. Under humid conditions, and when insufficient dehumidification occurs during a normal cooling cycle, lowering the cooling set point may provide further dehumidification, which may improve comfort in the inside space. Under less humid conditions, and when the humidity level in the inside space is already below the humidity set point value, increasing the cooling set point value may lower the energy usage of the climate control system while still providing comfort.

REFERENCES:
patent: 4735054 (1988-04-01), Beckey
patent: 4889280 (1989-12-01), Grald et al.
patent: 4947928 (1990-08-01), Parker et al.
patent: 5062276 (1991-11-01), Dudley
patent: 5346129 (1994-09-01), Shah et al.
patent: 6401468 (2002-06-01), Hoyle et al.
patent: 6557771 (2003-05-01), Shah

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