Title:
CONTROL DEVICE, CONTROL METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2016/125647
Kind Code:
A1
Abstract:
A control device (216) is provided with a control unit (217). When operating a cooling cycle for cooling water using a water heat exchanger (201), the control unit controls the differential pressure determined by subtracting the pressure of the refrigerant in a refrigerant pipe between a compressor (209) and the water heat exchanger from the pressure of a refrigerant in a refrigerant pipe between the compressor and an air heat exchanger (101), so that the differential pressure is equal to or higher than a predetermined differential pressure at which the refrigerant circulates and at which the water does not freeze. When the cooling cycle operation is performed, if the outside air temperature would lower the temperature of the water to the freezing point or below, the control unit causes a chilling unit (1) to operate a reverse cycle of the cooling cycle before causing the chilling unit to start the operation of the cooling cycle.
Inventors:
AKATSUKA KEI (JP)
YAMAGUCHI TORU (JP)
FUWA YASUSHI (JP)
YAMAGUCHI TORU (JP)
FUWA YASUSHI (JP)
Application Number:
PCT/JP2016/052273
Publication Date:
August 11, 2016
Filing Date:
January 27, 2016
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F25B47/02; F25B13/00
Foreign References:
| JP2009174769A | 2009-08-06 | |||
| JP2007170706A | 2007-07-05 | |||
| JP2005351494A | 2005-12-22 | |||
| JP2005300056A | 2005-10-27 | |||
| JP2011257108A | 2011-12-22 |
Other References:
See also references of EP 3249321A4
Attorney, Agent or Firm:
MORI Ryuichirou et al. (JP)
Woods Ryuichiro (JP)
Woods Ryuichiro (JP)
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