ENVIRONMENTAL REFRIGERANT INSTEAD OF R502 - ZHEJIANG LANTIAN ENVIRONMENTAL

Title:

ENVIRONMENTAL REFRIGERANT INSTEAD OF R502

Document Type and Number:

WIPO Patent Application WO/2005/047418

Kind Code:

A1

Abstract:

The present invention relates to an environmental refrigerant instead of R502. The present refrigerant is comprised of fluoroethane (HFC-161), pentafluoroethane (HFC-125) and trifluoromethane (HFC-143a). Preferably, the refrigerant consists of 1%-30% of HFC-161m 35%-65% of HFC-125 and 5-64% of HFC-143a. The refrigerant has zero ODP, has no damage to ozonosphere, its GWP is substantially smaller than R502 and currently primary replacement R404A, and conforms to environmental protection. Working pressure and reduction ratio of said refrigerant are similar to R502. Without altering main parts in system, thermo-working properties such as refrigeration capacities and discharge temperature are superior than R502, therefore said refrigerant can long-term replace for R502, and reduce filling-mount.

Inventors:

GUO ZHIKAI (CN)
CHEN GUANGMING (CN)
XUAN YONGMEI (CN)
GUO XINZHENG (CN)

Application Number:

PCT/CN2004/000320

Publication Date:

May 26, 2005

Filing Date:

April 08, 2004

Export Citation:

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Assignee:

ZHEJIANG LANTIAN ENVIRONMENTAL (CN)
GUO ZHIKAI (CN)
CHEN GUANGMING (CN)
XUAN YONGMEI (CN)
GUO XINZHENG (CN)

International Classes:

C09K5/04; (IPC1-7): C09K5/04

Domestic Patent References:

WO1997007182A1	1997-02-27
WO1994000528A1	1994-01-06
WO1992001762A1	1992-02-06
WO1992001762A1	1992-02-06

Foreign References:

GB2298866A	1996-09-18
JPH07173462A	1995-07-11
JPH08100170A	1996-04-16
EP0583179A1	1994-02-16
US5277834A	1994-01-11
US5211867A	1993-05-18
JPH0517755A	1993-01-26
EP0526745A1	1993-02-10
EP0626435A2	1994-11-30
US5277834A	1994-01-11
GB2298866A	1996-09-18
EP0583179A1	1994-02-16
US5211867A	1993-05-18

Other References: