Hierarchial control for discrete chiller units

Details Hierarchial control for discrete chiller units Hierarchial control for discrete chiller units

1993-05-07

1994-07-12

Wayner, William E.

Refrigeration

Automatic control

Diverse, cascade or compound refrigeration-producing system

236 1EA, 417 7, F25B 700

Patent

active

053277422

ABSTRACT:
System and process are disclosed for the hierarchial control of a plurality of discrete chiller units each having individual dedicated controls. The system and process imposes limits on the amount of compression that can be demanded by the individual dedicated controls. These limits are selectively changed in response to whether a level of chilling has been collectively achieved. The selective changing of these limits is premised on examinations of each individual chiller unit including the recent history of any changes in compression by the unit.

REFERENCES:
patent: 3513662 (1970-05-01), Golber
patent: 4463574 (1984-08-01), Spethmann
patent: 4467617 (1984-08-01), Kitauchi
patent: 4483152 (1984-11-01), Bitondo
patent: 5097670 (1992-03-01), Yoshikawa et al.

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