Refrigerant for replacing freon-12 in centrifugal type cooling water unit
Title：
Refrigerant for replacing freon-12 in centrifugal type cooling water unit
Application Number：
 200410009628
Application Date：
 2004/09/30
Announcement Date：
 2005/05/18
Pub. Date：
 2006/08/02
Publication Number：
 1616587
Announcement Number：
 1267524
Grant Date：
 2006-8-2
Granted Pub. Date：
 2006-8-2
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C09K 5/04
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Wang Xin, Shi Lin, Zhu Mingshan
Key Words：
 Refrigerant, replace, freon-12, centrifugal type, cooling water unit
Abstract：
 The refrigerant consists of 1, 1, 1, 2-tetrafluoroethane, 1, 1, 1, 2, 3, 3, 3-heptafluoropropane and chlorobifluoromethane or 1, 1, 1-trifluoroethane. The present invention can meet the special requirement of centrifugal cooling water set on the substitute in molar mass, refrigerating amount unit volume, exhaust density of compressor and other parameters. The present invention makes the centrifugal chiller not only operate normally in designed work state but also adapt the load change. The present invention coincides with the requirement of protecting ozone layer and reducing green house effect. The refrigerant may be refilled directly and may be used as the substitute of available Freon-12 in centrifugal chiller.
Claim：
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PCT：
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