Centrifual cold-water machine unit freon-12 substituted refrigeration agent
Title:
Centrifual cold-water machine unit freon-12 substituted refrigeration agent
Application Number:
01120435
Application Date:
2001/07/13
Announcement Date:
2002/01/02
Pub. Date:
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:
Priority:
PCT:
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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
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