Title:
空調給湯システム及びヒートポンプユニット
Document Type and Number:
Japanese Patent JP5380226
Kind Code:
B2
Abstract:
Problem to be Solved:
A discharged warm/cold heat of a refrigerant circuit is effectively utilized in order to attain high energy efficiency. Particularly, an appropriate operation control is executed when a hot-water supplying operation and an air cooling operation are simultaneously performed, whereby high energy efficiency is attained. Solution:
When an air cooling operation by an air temperature adjusting refrigerant circuit 5 and a hot-water supplying operation by a hot-water supplying refrigerant circuit 6 are executed, the air temperature adjusting refrigerant circuit, and the hot-water supplying refrigerant circuit are controlled such that a target evaporation temperature of the hot-water supplying refrigerant circuit 6 or a target condensation temperature of the air temperature adjusting refrigerant circuit 6 is attained, the target evaporation temperature or the target condensation temperature being set based upon an air cooling capacity and an evaporation temperature of the air temperature adjusting refrigerant circuit5 and a hot-water supplying capacity and a condensation temperature of the air temperature adjusting refrigerant circuit 6.
Inventors:
Kazuhiro Endo
Tatsuro Fujii
Tatsuro Fujii
Application Number:
JP2009219895A
Publication Date:
January 08, 2014
Filing Date:
September 25, 2009
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
F25B29/00; F24F11/02; F24H1/00; F25B25/00
Domestic Patent References:
| JP2004218943A | ||||
| JP5005567A |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Yuji Toda