Title:
AIR CONDITIONING/HOT WATER SUPPLY SYSTEM AND CONTROL METHOD FOR AIR CONDITIONING/HOT WATER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/114461
Kind Code:
A1
Abstract:
In order to provide an air conditioning/hot water supply system and a control method for the air conditioning/hot water supply system which are capable of suitably distributing a coolant during a cycle with a large calorific value to a heat exchanger for exhaust heat recovery and a heat exchanger for exhaust heat, during the exhaust heat recovery operation, a control device (1a) calculates the amount of heat discharged for air conditioning, the amount of heat absorbed for hot water supply, the target condensation temperature in an air conditioning coolant circuit (5), and the target vapor temperature in a hot water supply coolant circuit (6), when the air conditioning operation in an air conditioning cycle and the hot water supply operation in a hot water supply cycle are executed at the same time. In the air conditioning/hot water supply system, the control device (1a) closes a hot water supply coolant flow rate adjustment valve (49a) arranged in a hot water supply coolant inlet (44a) in a hot water supply heat source-side heat exchanger (44) and also adjusts the opening amount for an air conditioning coolant flow rate adjustment valve (35c), arranged in an air conditioning-for-cooling coolant inlet (24a) in an air conditioning heat source-side heat exchanger (24), on the basis of the temperature in the vicinity of an air conditioning-for-cooling coolant outlet (24b), when the amount of heat discharged for air conditioning is greater than the amount of heat absorbed for hot water supply.
Inventors:
KOKUGAN YOKO (JP)
KOTANI MASANAO (JP)
UCHIDA MARI (JP)
KOTANI MASANAO (JP)
UCHIDA MARI (JP)
Application Number:
PCT/JP2011/053863
Publication Date:
August 30, 2012
Filing Date:
February 22, 2011
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; F25B7/00
Foreign References:
| JP2005299935A | 2005-10-27 | |||
| JPS61101771A | 1986-05-20 | |||
| JP2004218943A | 2004-08-05 | |||
| JPH0432669A | 1992-02-04 | |||
| JPH0432669A | 1992-02-04 | |||
| JP2005299935A | 2005-10-27 |
Other References:
See also references of EP 2679934A4
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
Michizo Isono (JP)
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Claims: