Title:
COLD WATER CIRCULATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/157347
Kind Code:
A1
Abstract:
A cold water circulation system according to one aspect of the present invention is equipped with a heat source, multiple air handling units (AHUs), a pump, and a control unit. On the basis of information indicating the status of the one or more AHUs belonging to an air-conditioning group, the control unit calculates a surplus, which indicates the excess air-cooling performance of the one or more AHUs, and calculates a group surplus, which is determined on the basis of the surpluses of the one or more AHUs belonging to the air-conditioning group. When the group surplus is equal to or greater than a prescribed second threshold value the control unit reduces the flow volume of cold water discharged from the pump by controlling the operating frequency of a power inverter, and when the group surplus is less than the second threshold value the control unit increases the flow volume of the cold water discharged from the pump.
Inventors:
NAKATA TATSUYA (JP)
YANAGI MASAHIDE (JP)
SEKIGUCHI KEISUKE (JP)
YOSHII ARI (JP)
YANAGI MASAHIDE (JP)
SEKIGUCHI KEISUKE (JP)
YOSHII ARI (JP)
Application Number:
PCT/JP2014/058561
Publication Date:
October 02, 2014
Filing Date:
March 26, 2014
Export Citation:
Assignee:
NTT FACILITIES INC (JP)
International Classes:
F24F11/02
Foreign References:
| JP2006064283A | 2006-03-09 | |||
| JP2011247560A | 2011-12-08 | |||
| JP2011179755A | 2011-09-15 | |||
| JP2007205605A | 2007-08-16 | |||
| JPH0875224A | 1996-03-19 | |||
| JP2012193877A | 2012-10-11 |
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL PATENT FIRM (JP)
Nagoya international patent business corporation (JP)
Nagoya international patent business corporation (JP)
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