Title:
AIR CONDITIONING AND HOT-WATER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/014306
Kind Code:
A1
Abstract:
[Problem] To provide an air conditioning and hot-water supply system capable of performing an operation in a hot-water supply cycle while using exhaust heat in an air conditioning cycle even when an air conditioning load is smaller than a hot-water supply load.
[Solution] The present invention is an air conditioning and hot-water supply system comprising an air conditioning refrigerant circuit (5) which performs a cooling operation or a heating operation by switching therebetween, a hot-water supply refrigerant circuit (6) which performs a hot-water supply operation, an intermediate heat exchanger (23) which performs heat exchange between an air conditioning refrigerant that circulates through the air conditioning refrigerant circuit and a hot-water supply refrigerant that circulates through the hot-water supply refrigerant circuit, and a control device (1a) which controls the operations. The control device calculates the amount of heat release required by the air conditioning refrigerant circuit in the cooling operation and the amount of heat absorption required by the hot-water supply refrigerant circuit in the hot-water supply operation. The control device performs control such that when the amount of heat release is larger than the amount of heat absorption, the amount of heat corresponding to the difference therebetween is released from an air conditioning heat source-side heat exchanger to the atmosphere, and when the amount of heat absorption is larger than the amount of heat release, the amount of heat corresponding to the difference therebetween is absorbed from the atmosphere by a hot-water supply heat source-side heat exchanger.
Inventors:
KOKUGAN YOKO (JP)
KOTANI MASANAO (JP)
UCHIDA MARI (JP)
KOTANI MASANAO (JP)
UCHIDA MARI (JP)
Application Number:
PCT/JP2010/062828
Publication Date:
February 02, 2012
Filing Date:
July 29, 2010
Export Citation:
Assignee:
HITACHI LTD (JP)
KOKUGAN YOKO (JP)
KOTANI MASANAO (JP)
UCHIDA MARI (JP)
KOKUGAN YOKO (JP)
KOTANI MASANAO (JP)
UCHIDA MARI (JP)
International Classes:
F25B29/00
Foreign References:
| JP2005299935A | 2005-10-27 | |||
| JPS59134469A | 1984-08-02 | |||
| JPH01219454A | 1989-09-01 | |||
| JP2009008381A | 2009-01-15 | |||
| JPH09264614A | 1997-10-07 | |||
| JPH0432669A | 1992-02-04 |
Other References:
See also references of EP 2600081A4
Attorney, Agent or Firm:
The Patent Body Corporate TAKEWA INTERNATIONAL PATENT OFFICE (JP)
Patent business corporation Takekazu international patent firm (JP)
Patent business corporation Takekazu international patent firm (JP)
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Claims: