Air conditioner and heat pump with tetra fluoroethane-containing

Details Air conditioner and heat pump with tetra fluoroethane-containing Air conditioner and heat pump with tetra fluoroethane-containing

1994-09-15

1995-08-08

Skane, Christine

Refrigeration

Refrigeration producer

Compressor-condenser-evaporator circuit

62114, 252 67, F25B 100, C09K 504

Patent

active

054388490

ABSTRACT:
An air conditioner or heat pump containing a working fluid comprising tetrafluoroethane and at least two fluorinated hydrocarbons having a boiling point of not higher than -40.degree. C. under atmospheric pressure selected from the group consisting of methane derivatives and ethane derivatives which consist of one or two carbon atoms, hydrogen atoms and fluorine atoms, which has very small influence on the ozone layer in the stratosphere and is suitable as a substitute working fluid for chlorodifluoromethane.

REFERENCES:
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patent: 3640869 (1972-02-01), Orfeo et al.
patent: 4810403 (1989-03-01), Bivens et al.
patent: 4971712 (1990-11-01), Gorski et al.
patent: 5185094 (1993-02-01), Shiflett
World Patent Index, Latest, accession No. 89-035371[05], Derwent Publications Ltd. (London); Abstract of JP-A-63 308 084, Dec. 1988.
K. Watanabe et al., "Thermophysical Properties of Nonazeotropic Refrigerant Blends," ASME, The American Society of Mechanical Engineers, Winter Annual Meeting, 86-WA/HT-72, Dec. 7-12, 1986.
Shulz, "ASHRAE Transactions," 91, Part 2B, pp. 918-928, 1985.

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