Operating optimization for plural parallel connected chillers

Details Operating optimization for plural parallel connected chillers Operating optimization for plural parallel connected chillers

1978-05-08

1980-07-01

Gruber, Felix D.

Boots, shoes, and leggings

165 13, 62175, 236 1EA, 364505, G05B 1302, G06F 1520, F24H 1106

Patent

active

042109574

ABSTRACT:
An optimization system for switching between plural parallel connected chillers in a refrigeration system is disclosed which system establishes optimized changeover criteria based upon the design refrigerant head for the chillers, the minimum refrigerant head for the chillers, the capacity of the chillers at design head and the capacity of the chillers at minimum head, and which system, using these criteria, calculates optimized switchover capacity as a function of the present actual refrigerant head. The system then compares the optimized switchover capacity to the present building load and, if the capacity is insufficient to meet the building load, an additional chiller is switched in and, if the optimized switchover capacity is greater than the building load and more than one chiller is operating, one of the chillers is disconnected.

REFERENCES:
patent: 3400374 (1968-09-01), Schumann
patent: 3555251 (1971-01-01), Shavit
patent: 3875995 (1975-04-01), Mannion et al.
patent: 3995443 (1976-12-01), Iversen
patent: 4084388 (1978-04-01), Nelson
patent: 4122893 (1978-10-01), Thompson

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