Mixed heat pump work substance with zero ozone layer destroying potential
Title：
Mixed heat pump work substance with zero ozone layer destroying potential
Application Number：
 200510086433
Application Date：
 2005/09/16
Announcement Date：
 2006/03/01
Pub. Date：
 2007/11/07
Publication Number：
 1740263
Announcement Number：
 100347265
Grant Date：
 2007-11-7
Granted Pub. Date：
 2007-11-7
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C09K 5/04
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Shi Lin, Zan Cheng, Zhu Mingshan, Han Lizhong, Dong Ming, Meng Fuchun
Key Words：
 ozone layer destroying, potential, zero, mixed, heat pump, work substance
Abstract：
 The mixed heat pump work substance with zero ozone layer destroying potential is one kind of mixed refrigerating work substance for use in medium and high temperature water source heat pump set. The work substance contains three substances of 1, 1, 1, 2-tetrafluoro ethane, 1, 1, 1, 2, 3, 3, 3-heptafluoro propane and 1, 1, 1, 2, 3, 3-hexafluoro propane, or may have butane added to constitute quaternary mixed work substance. The preparation process is physical mixing of the liquid components in certain proportion. The present invention has the advantages of no destruction on ozone layer, no toxicity, being inflammable and high thermal performance, and may be used directly in HFC-134a heat pump set, with the heat pump set being able to provide hot water of about 80 deg.c.
Claim：
Priority：
PCT：
LegalStatus：

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information

Zero zone destruction and mixed working medium suitable for compression type heat pump


Other Patents of Same Inventor

Refrigerating medium for heat pump of high-temp water source
Centrifual cold-water machine unit freon-12 substituted refrigeration agent
Substitute refrigerant for freon-12 centrifugal cold water machine set
Refrigerant for medium and low temperature refrigeration or air conditioner heat pump system
Refrigerant
Refrigerant for middle- or low-temp refrigerating system
Refrigerant for replacing freon-12 in centrifugal type cooling water unit
Zero zone destruction and mixed working medium suitable for compression type heat pump
Coprocessor
Built-in speech discriminating method based on sub-word hidden Markov model



News & Events More>>

Last Update  
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.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo