Title:
COOLING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/005842
Kind Code:
A1
Abstract:
A cooling system (100) includes a cooling tower (1) that cools chilled water by means of free cooling, an inverter-driven cooling fan (6) with which the cooling tower (1) is provided, and a heat exchanger (2) that exchanges heat between cooling water that has been cooled by the cooling tower (1) and cold water the temperature of which has been raised by a load device (3). In addition, the cooling system is equipped with a simulator that sets the bias frequency of the cooling fan (6) for each wet-bulb temperature of the outside air and for each load of the load device (3), and a control device (71) which is formed having a calculation control unit (72) that calculates the actual measured value for the wet-bulb temperature and the actual measured value for the load, and which, of the bias frequencies set by the simulator, outputs a bias frequency that corresponds to the actual measured value for the wet-bulb temperature and the actual measured value for the load as the drive frequency of the cooling fan (6).
Inventors:
KITAJIMA KEIICHI (JP)
KIKUCHI HIROSHIGE (JP)
MIYAJIMA YUJI (JP)
KIKUCHI HIROSHIGE (JP)
MIYAJIMA YUJI (JP)
Application Number:
PCT/JP2012/067373
Publication Date:
January 10, 2013
Filing Date:
July 06, 2012
Export Citation:
Assignee:
HITACHI PLANT TECHNOLOGIES LTD (JP)
KITAJIMA KEIICHI (JP)
KIKUCHI HIROSHIGE (JP)
MIYAJIMA YUJI (JP)
KITAJIMA KEIICHI (JP)
KIKUCHI HIROSHIGE (JP)
MIYAJIMA YUJI (JP)
International Classes:
F28F27/00
Foreign References:
| JP2009216375A | 2009-09-24 | |||
| JP2010060204A | 2010-03-18 |
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
Michizo Isono (JP)
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Claims:
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