Reactive control for discrete chiller units

Details Reactive control for discrete chiller units Reactive control for discrete chiller units

1993-05-07

1994-05-10

Wayner, William E.

Refrigeration

Processes

Compressing, condensing and evaporating

62201, 417 8, F25B 700

Patent

active

053097270

ABSTRACT:
System and process are disclosed for reacting to conditions that may arise in a plurality of discrete chiller units all individually controlled by dedicated control units. The system and process react to temperature conditions of the coolant when it enters and when it leaves the chiller units. The system normally supervises the manner in which the chillers are allowed to individually increase or decrease chilling capacity. The system furthermore overrides this supervisory control of the individual chiller units when the coolant entering the chiller units drops below a threshold value. The chilling capacity of all running chiller units is decreased when this latter condition occurs.

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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