Title:
HEAT PUMP SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/080800
Kind Code:
A1
Abstract:
In order to prevent unnecessarily low efficiency in a system in which aqueous medium-using utilization units are connected in a plurality to a single heat source unit, the heat source unit (2) is provided with a variable capacity heat-source-side compressor (21) and a heat-source-side heat exchanger (24) that functions as a radiator for a refrigerant. Each of the utilization units (4a, 4b) connected to the heat source unit (2) is provided with a utilization-side heat exchanger (41a, 41b) that functions as an evaporator for the refrigerant and cools the aqueous medium. An operating capacity control unit (12b) controls the capacity of the heat-source-side compressor (21) in a manner such that the evaporation temperature (Te) of the refrigerant in the utilization-side heat exchangers (41a, 41b) reaches a first target evaporation temperature (Tte1). A second target evaporation temperature calculation unit (191a, 191b) calculates, for each of the utilization units (4a, 4b), a second target evaporation temperature (Tte2a, Tte2b) required for the outlet temperature of the aqueous medium in the utilization-side heat exchanger (41a, 41b) to reach a set temperature (Tsa, Tsb), and a first target evaporation temperature determination unit (12a) sets the lowest value of the second target evaporation temperatures (Tte2a, Tte2b) as the first target evaporation temperature (Tte1).
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Inventors:
HONDA MASAHIRO (BE)
Application Number:
PCT/JP2009/007347
Publication Date:
July 07, 2011
Filing Date:
December 28, 2009
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
DAIKIN EUROPE NV (BE)
HONDA MASAHIRO (BE)
DAIKIN EUROPE NV (BE)
HONDA MASAHIRO (BE)
International Classes:
F25B1/00; F25B7/00
Foreign References:
| JP2009236393A | 2009-10-15 | |||
| JPH0257875A | 1990-02-27 | |||
| JP2007183089A | 2007-07-19 | |||
| JPH0173661U | 1989-05-18 | |||
| JP2007163099A | 2007-06-28 |
Other References:
See also references of EP 2508817A4
Attorney, Agent or Firm:
Shinjyu Global IP (JP)
fresh green -- a global IP patent business corporation (JP)
fresh green -- a global IP patent business corporation (JP)
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