Centrifual cold-water machine unit freon-12 substituted refrigeration agent |
Title： |
| Centrifual cold-water machine unit freon-12 substituted refrigeration agent |
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Application Number： |
01120435 |
Application Date： |
2001/07/13 |
Announcement Date： |
2002/01/02 |
Pub. Date： |
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Publication Number： |
1329122 |
Announcement Number： |
1211453 |
Grant Date： |
2005-7-20 |
Granted Pub. Date： |
2005-7-20 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C09K 5/04 |
Applicant(s)： |
Qinghua Univ. |
Inventor(s)： |
Shi Lin, Zhu Mingshan, Han Lizhong |
Key Words： |
Centrifual, cold-water machine unit, freon-12, substituted refrigeration agent |
Abstract： |
The present invention relates to a refrigerating agent which can be substituted for freon-12 for centrifugal water chilling unit. The said refrigerating agent contains three components of HCFC-22, HFC-227 ea and HFC-124, to which HC-600 a also can be added so as to form four-component composite. Its preparation method adopts physical liquid-phase mixing process according to a certain proportion. Said invention can completely meet the requirements for environment protection, and its thermal property quite approaches to that of freon-12, so that the said invented refrigerating agent can be directly charged, it has no need of changing main component of a compressor and its system, and also has no need of changing production line. |
Claim： |
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PCT： |
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 Relevancy information |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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