Title:
UNDERGROUND HEAT EXCHANGER AND AIR CONDITIONING SYSTEM
Document Type and Number:
Japanese Patent JP2010145033
Kind Code:
A
Abstract:
To provide an underground heat exchanger which can reduce a workload on an operator at an installation site and can improve heat exchange efficiency between underground soil and a heat medium.
A plurality of outer pipes (30) of the underground heat exchanger (10) are buried in the ground with intervals, and inner pipes (20) inserted in the respective outer pipes (30) are connected in parallel to each other. The plurality of underground heat exchangers (10) are classified into first and second groups. Opening/closing valves (9) corresponding to the respective groups are opened and closed to supply low-pressure refrigerants to the groups.
COPYRIGHT: (C)2010,JPO&INPIT
Inventors:
KAWABATA KATSUHIRO
TANIMOTO KEISUKE
ASAI HIDEAKI
TANIMOTO KEISUKE
ASAI HIDEAKI
Application Number:
JP2008323815A
Publication Date:
July 01, 2010
Filing Date:
December 19, 2008
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F24J3/08; F25B27/00; F28D21/00
Domestic Patent References:
| JP2002115870A | 2002-04-19 | |||
| JP2001147056A | 2001-05-29 | |||
| JPH0960984A | 1997-03-04 | |||
| JP2005048972A | 2005-02-24 | |||
| JP2008292044A | 2008-12-04 | |||
| JP2007017137A | 2007-01-25 | |||
| JP2006284065A | 2006-10-19 |
Foreign References:
| EP1637734A1 | 2006-03-22 |
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura
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