Composition for heat cycle system, and heat cycle system
First Claim
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1. A composition for a heat cycle system, comprising:
- a working fluid for heat cycle containing at least one unsaturated fluorinated hydrocarbon compound of formula (I), which contains at least one carbon-carbon unsaturated bond, anda refrigerant oil having a breakdown voltage of at least 25 kV, a hydroxyl value of at most 0.1 mgKOH/g, and a kinematic viscosity at 40°
C. of from 5 to 200 mm2/s and a kinematic viscosity at 100°
C. of from 1 to 100 mm2/s;
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,wherein the refrigerant oil does not comprise an ether refrigerant oil.
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Abstract
A composition for a heat cycle system and a heat cycle system employing the composition are provided. The composition has favorable lubricating properties and contains a working fluid for heat cycle and a refrigerant oil. The working fluid has a low global warming potential and can replace R410A. The working fluid contains an unsaturated fluorinated hydrocarbon compound having a specific structure. The refrigerant oil has a breakdown voltage of at least 25 kV, a hydroxyl value of at most 0.1 mgKOH/g, and a kinematic viscosity at 40° C. of from 5 to 200 mm2/s and a kinematic viscosity at 100° C. of from 2 to 30 mm2/s.
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Citations
14 Claims
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1. A composition for a heat cycle system, comprising:
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a working fluid for heat cycle containing at least one unsaturated fluorinated hydrocarbon compound of formula (I), which contains at least one carbon-carbon unsaturated bond, 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 kinematic viscosity at 40°
C. of from 5 to 200 mm2/s and a kinematic viscosity at 100°
C. of from 1 to 100 mm2/s;
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,wherein the refrigerant oil does not comprise an ether refrigerant oil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification