Title:
HYBRID AIR CONDITIONING SYSTEM USING UNDERGROUND HEAT
Document Type and Number:
Japanese Patent JP2009250555
Kind Code:
A
Abstract:
To provide an air conditioning system using both underground heat and outdoor air heat based on the level of efficiency in heat exchange and having high COP.
In this hybrid air conditioning system using underground heat, an air heat exchanger is incorporated into a heat pump using underground heat. When the underground temperature is higher than (outdoor air temperature -; is a positive constant) during use for cooling in summer and when the underground temperature is lower than (outdoor air temperature +; is a positive constant) during use for heating in winter, circulation on an underground heat source side is stopped, and operation as an air heat source heat pump is performed.
Inventors:
SAKAMOTO YOSHIHITO
HAYASHI MASAHIRO
NAKAGAWA YOSHI
KIMIZUKA SATORU
HASHIZUME MORIO
KOMA NORIHIKO
HAYASHI MASAHIRO
NAKAGAWA YOSHI
KIMIZUKA SATORU
HASHIZUME MORIO
KOMA NORIHIKO
Application Number:
JP2008101070A
Publication Date:
October 29, 2009
Filing Date:
April 09, 2008
Export Citation:
Assignee:
JFE STEEL CORP
JFE WELDED PIPE MFG CO LTD
JFE WELDED PIPE MFG CO LTD
International Classes:
F25B30/06; F24J3/08
Domestic Patent References:
| JP2006349332A | 2006-12-28 | |||
| JP2005024140A | 2005-01-27 | |||
| JP2006313034A | 2006-11-16 | |||
| JP2005214591A | 2005-08-11 | |||
| JP2005048972A | 2005-02-24 |
Attorney, Agent or Firm:
Kenichiro Ochiai