Title:
HEAT PUMP SYSTEM OF COMBINATION OF AMMONIA CYCLE AND CARBON DIOXIDE CYCLE
Document Type and Number:
WIPO Patent Application WO/2000/050822
Kind Code:
A1
Abstract:
A novel heat pump system capable of carrying out a cooling (refrigerating) operation or a heating (room heating) operation with ammonia and carbon dioxide, natural media, utilized in a combined state. The heat pump system (1) comprises a combination of an ammonia cycle (2), and a carbon dioxide cycle (3), and is characterized in that a carbon dioxide medium is circulated in the carbon dioxide cycle (3) by heating or cooling a part of the cycle, in addition to utilizing a natural circulation phenomenon in which a liquid head difference is formed in a carbon dioxide medium in the cycle without incorporating a compressor in the cycle, structural members of the ammonia cycle (2) being installed in a place isolated from a machine for cooling and heating an object material.
Inventors:
KANEO HIDETOSHI (JP)
Application Number:
PCT/JP1999/005368
Publication Date:
August 31, 2000
Filing Date:
September 30, 1999
Export Citation:
Assignee:
HACHIYO ENGINEERING CO LTD (JP)
KANEO HIDETOSHI (JP)
KANEO HIDETOSHI (JP)
International Classes:
F25B25/00; F25B9/00; F25B23/00; (IPC1-7): F25B1/00; F25B7/00
Foreign References:
| JPH1123079A | 1999-01-26 | |||
| JPS6438558A | 1989-02-08 |
Other References:
See also references of EP 1164338A4
Attorney, Agent or Firm:
Higashiyama, Takahiko (Hontori 3-Chome Shizuoka-Shi Shizuoka, JP)
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