Title:
液体冷却器の自動制御システム
Document Type and Number:
Japanese Patent JP4439842
Kind Code:
B2
Abstract:
An automatic control system of the invention comprises a plurality of liquid chillers, a principal controller, and a plurality of secondary controllers respectively connected to the liquid chillers and the principal controller. The automatic control system stores a British Thermal Unit (BTU) table that includes a predetermined high load limit parameter and a predetermined low load limit parameter varying according to the number of liquid chillers in operation. The principal controller compares an actual load of the currently operating liquid chillers with the high and/or low load limit parameter to determine an adequate number of liquid chillers that have to be operated. By evaluating the number of liquid chillers currently operating, the principal controller then determines whether liquid chillers have to be switched on or switched off through the secondary controllers.
Inventors:
So Nishiki
Application Number:
JP2003167399A
Publication Date:
March 24, 2010
Filing Date:
June 12, 2003
Export Citation:
Assignee:
Muang Hong Electronic Co., Ltd.
International Classes:
F25D13/00; F25D17/02; F25D29/00; F25D31/00
Domestic Patent References:
| JP2001033192A | ||||
| JP2000121287A | ||||
| JP3204543A | ||||
| JP4313695A | ||||
| JP5141897A |
Attorney, Agent or Firm:
Hideka Tanaka
Kunihiko Shiromura
Tsuyoshi Kumano
Kunihiko Shiromura
Tsuyoshi Kumano