Demand limit control by integral reset of thermostats

Details Demand limit control by integral reset of thermostats Demand limit control by integral reset of thermostats

G - Physics

05

D

323/1, 341/108,

G05D 23/19 (2006.01) F24F 11/00 (2006.01) G05B 11/42 (2006.01) H02J 3/14 (2006.01)

Patent

CA 1313552

ABSTRACT OF THE DISCLOSURE A temperature control system for a building is disclosed utilizing a central demand limit controller. The system includes a number of control modules or thermostats that have both proportional error and integral error functions. The integral error is reset at intervals by an interstage differential to drop single stages of air conditioning. This reduces demand until the maximum allowed demand is met. The integral error function is a timed function and the stages return in a random manner to restore setpoint temperature.

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