Composition for heat cycle system, and heat cycle system
First Claim
1. A composition, comprisinga working fluid for heat cycle containing difluoromethane as a saturated fluorinated hydrocarbon compound, trifluoroethylene and 2,3,3,3-tetrafluoropropene as unsaturated fluorinated hydrocarbon compounds, and optionally at least one other unsaturated fluorinated hydrocarbon compound which is a compound comprising at least one carbon-carbon unsaturated bond and represented by formula (I), anda refrigerant oil having a breakdown voltage of at least 25 kV, a hydroxyl value of at most 0.1 mgKOH/g, and a minimum temperature on a high temperature side of a phase separation temperature from the working fluid for heat cycle of at least 35°
- C. and a maximum temperature on a low temperature side of at most −
60°
C.;
CxFyRz
(I),where R is H or Cl, x is an integer of from 2 to 6, y is an integer of from 1 to 12, and z is an integer of from 0 to 11, provided that 2x≥
y+z≥
2.
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Abstract
A composition for a heat cycle system having favorable lubricating properties is provided. A heat cycle system employing the composition is also provided. The composition contains a working fluid for heat cycle, which has a low global warming potential and can replace R410A. The working fluid contains an unsaturated fluorinated hydrocarbon compound having a specific structure and a refrigerant oil having a breakdown voltage of at least 25 kV, a hydroxy value of at most 0.1 mgKOH/g, and a minimum temperature on the high temperature side of the phase separation temperature from the working fluid of at least 35° C. and a maximum temperature on the low temperature side of at most −60° C.
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Citations
15 Claims
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1. A composition, comprising
a working fluid for heat cycle containing difluoromethane as a saturated fluorinated hydrocarbon compound, trifluoroethylene and 2,3,3,3-tetrafluoropropene as unsaturated fluorinated hydrocarbon compounds, and optionally at least one other unsaturated fluorinated hydrocarbon compound which is a compound comprising at least one carbon-carbon unsaturated bond and represented by formula (I), and a refrigerant oil having a breakdown voltage of at least 25 kV, a hydroxyl value of at most 0.1 mgKOH/g, and a minimum temperature on a high temperature side of a phase separation temperature from the working fluid for heat cycle of at least 35° - C. and a maximum temperature on a low temperature side of at most −
60°
C.;
CxFyRz
(I),where R is H or Cl, x is an integer of from 2 to 6, y is an integer of from 1 to 12, and z is an integer of from 0 to 11, provided that 2x≥
y+z≥
2.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- C. and a maximum temperature on a low temperature side of at most −
Specification