Zero zone destruction and mixed working medium suitable for compression type heat pump
Title：
Zero zone destruction and mixed working medium suitable for compression type heat pump
Application Number：
 200510115770
Application Date：
 2005/11/11
Announcement Date：
 2006/04/12
Pub. Date：
 2007/07/18
Publication Number：
 1757695
Announcement Number：
 1326967
Grant Date：
 2007-7-18
Granted Pub. Date：
 2007-7-18
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C09K 5/04
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 An Lin, Zan Cheng, Zhu Mingshan, Han Lizhong, Dong Ming, Meng Fuchun, Li Sixiong
Key Words：
 Zero zone destruction, mixed working medium, compression type, heat pump
Abstract：
 A mixed working medium for the high-temp compression-type heat pump features no damage to ozone contains 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, and 1,1,1,3,3-pentafluoropropane. It is possible to add butane to it. Its advantages are no poison, incombustible, and high thermodynamic performance.
Claim：
Priority：
PCT：
LegalStatus：

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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







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