HEAT-TRANSFER FLUID FOR A CENTRIFUGAL COMPRESSOR
A process for cooling or heating a fluid or a body by means of a vapour compression circuit including a centrifugal compressor and containing a heat-transfer fluid, the heat-transfer fluid including at least two compounds selected from 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, 1,1,1,2-tetrafluoropropene, 1,1-difluoroethane and 3,3,3-trifluoropropene, in which: the ratio of the Mach number of the centrifugal compressor to the Mach number which the centrifugal compressor has under the same operating conditions if the heat-transfer fluid is replaced with 1,1,1,2-tetrafluoroethane in the vapour compression circuit is greater than or equal to 0.97 and less than or equal to 1.03; the compression ratio of the centrifugal compressor is less than or equal to the compression ratio which the centrifugal compressor has under the same operating conditions if the heat-transfer fluid is replaced with 1,1,12-tetrafluorethane in the vapour compression circuit.
1 . (canceled)
2 . A composition comprising:
from 5% to 90% of 2,3,3,3-tetrafluoropropene;
from 5% to 60% of 1,1,1,2-tetrafluoroethane; and
from 5% to 80% of 3,3,3-trifluoropropene.
3 . The composition of claim 2 , comprising:
from 10% to 75% of 2,3,3,3-tetrafluoropropene;
from 5% to 60% of 1,1,1,2-tetrafluoroethane; and
from 20% to 80% of 3,3,3-trifluoropropene.
4 . The composition of claim 2 , comprising:
from 10% to 66% of 2,3,3,3-tetrafluoropropene;
from 5% to 50% of 1,1,1,2-tetrafluoroethane; and
from 30% to 80% of 3,3,3-trifluoropropene.
5 . The composition of claim 2 , comprising:
from 10% to 85% of 2,3,3,3-tetrafluoropropene;
from 5% to 60% of 1,1,1,2-tetrafluoroethane; and
from 10% to 70% of 3,3,3-trifluoropropene.
6 . The composition of claim 2 , comprising:
from 10% to 60% of 2,3,3,3-tetrafluoropropene;
from 5% to 50% of 1,1,1,2-tetrafluoroethane; and
from 20% to 60% of 3,3,3-trifluoropropene.
7 . The composition of claim 2 , consisting of:
from 5% to 90% of 2,3,3,3-tetrafluoropropene;
from 5% to 60% of 1,1,1,2-tetrafluoroethane; and
from 5% to 80% of 3,3,3-trifluoropropene.
8 . The composition of claim 2 , consisting of:
from 10% to 75% of 2,3,3,3-tetrafluoropropene;
from 5% to 60% of 1,1,1,2-tetrafluoroethane; and
from 20% to 80% of 3,3,3-trifluoropropene.
9 . The composition of claim 2 , consisting of:
from 10% to 66% of 2,3,3,3-tetrafluoropropene;
from 5% to 50% of 1,1,1,2-tetrafluoroethane; and
from 30% to 80% of 3,3,3-trifluoropropene.
10 . The composition of claim 2 , consisting of:
from 10% to 85% of 2,3,3,3-tetrafluoropropene;
from 5% to 60% of 1,1,1,2-tetrafluoroethane; and
from 10% to 70% of 3,3,3-trifluoropropene.
11 . The composition of claim 2 , consisting of:
from 10% to 60% of 2,3,3,3-tetrafluoropropene;
from 5% to 50% of 1,1,1,2-tetrafluoroethane; and
from 20% to 60% of 3,3,3-trifluoropropene.
12 . A heat transfer composition comprising:
the composition of claim 2 ; and
one or more additives chosen from lubricants, stabilizers, surfactants, tracers, fluorescent agents, odorous agents, solubilization agents and mixtures thereof.
13 . A heat transfer composition comprising:
the composition of claim 7 ; and
one or more additives chosen from lubricants, stabilizers, surfactants, tracers, fluorescent agents, odorous agents, solubilization agents and mixtures thereof.
14 . An installation for cooling or heating a fluid or a body comprising a vapor compression circuit comprising a centrifugal compressor and containing the composition of claim 2 , wherein:
the ratio of the Mach number of the centrifugal compressor to the Mach number that the centrifugal compressor has, under the same operating conditions, when the heat transfer fluid is replaced by 1,1,1,2-tetrafluoroethane in the vapor compression circuit, is greater than or equal to 0.97 and less than or equal to 1.03;
the compression ratio of the centrifugal compressor is less than or equal to the compression ratio that the centrifugal compressor has, under the same operating conditions, when the heat transfer fluid is replaced by 1,1,1,2-tetrafluoroethane in the vapor compression circuit; and
the centrifugal compressor is devoid of rotational speed adaptation means.
15 . The installation of claim 14 , wherein the composition consists of:
from 5% to 90% of 2,3,3,3-tetrafluoropropene;
from 5% to 60% of 1,1,1,2-tetrafluoroethane; and
from 5% to 80% of 3,3,3-trifluoropropene.
16 . The installation of claim 14 , wherein the vapor compression circuit comprises an evaporator and a condenser, and wherein:
a difference between the pressure at the condenser and the pressure at the evaporator in the final vapor compression circuit containing said substitute heat transfer fluid is less than or equal to the difference between the pressure at the condenser and the pressure at the evaporator in the vapor compression circuit containing said 1,1,1,2-tetrafluoroethane, under the same operating conditions.
17 . An installation for cooling or heating a fluid or a body comprising a vapor compression circuit comprising a centrifugal compressor and containing the composition of claim 2 ,
wherein:
the ratio of the Mach number of the centrifugal compressor to the Mach number that the centrifugal compressor has, under the same operating conditions, when the heat transfer fluid is replaced by 1,1,1,2-tetrafluoroethane in the vapor compression circuit, is greater than or equal to 0.97 and less than or equal to 1.03; and
the compression ratio of the centrifugal compressor is less than or equal to the compression ratio that the centrifugal compressor has, under the same operating conditions, when the heat transfer fluid is replaced by 1,1,1,2-tetrafluoroethane in the vapor compression circuit.
18 . The installation of claim 17 , wherein the composition consists of:
from 5% to 90% of 2,3,3,3-tetrafluoropropene;
from 5% to 60% of 1,1,1,2-tetrafluoroethane; and
from 5% to 80% of 3,3,3-trifluoropropene.
19 . The installation of claim 17 , wherein the vapor compression circuit comprises an evaporator and a condenser, and wherein:
a difference between the pressure at the condenser and the pressure at the evaporator in the final vapor compression circuit containing said substitute heat transfer fluid is less than or equal to the difference between the pressure at the condenser and the pressure at the evaporator in the vapor compression circuit containing said 1,1,1,2-tetrafluoroethane, under the same operating conditions.
20 . An installation for cooling or heating a fluid or a body comprising a vapor compression circuit comprising a centrifugal compressor and containing the composition of claim 2 , wherein:
the ratio of the Mach number of the centrifugal compressor to the Mach number that the centrifugal compressor has, under the same operating conditions, when the heat transfer fluid is replaced by 1,1,1,2-tetrafluoroethane in the vapor compression circuit, is greater than or equal to 0.97 and less than or equal to 1.03;
the compression ratio of the centrifugal compressor is less than or equal to the compression ratio that the centrifugal compressor has, under the same operating conditions, when the heat transfer fluid is replaced by 1,1,1,2-tetrafluoroethane in the vapor compression circuit;
the centrifugal compressor is provided with rotational speed adaptation means; and
a rotational speed of the centrifugal compressor in the vapor compression circuit containing said substitute heat transfer fluid is adjusted to a value less than or equal to the rotational speed of the centrifugal compressor in the vapor compression circuit containing said 1,1,1,2-tetrafluoroethane, under the same operating conditions.
21 . The installation of claim 20 , wherein the composition consists of:
from 5% to 90% of 2,3,3,3-tetrafluoropropene;
from 5% to 60% of 1,1,1,2-tetrafluoroethane; and
from 5% to 80% of 3,3,3-trifluoropropene.
22 . The installation of claim 20 , wherein the vapor compression circuit comprises an evaporator and a condenser, and wherein:
a difference between the pressure at the condenser and the pressure at the evaporator in the final vapor compression circuit containing said substitute heat transfer fluid is less than or equal to the difference between the pressure at the condenser and the pressure at the evaporator in the vapor compression circuit containing said 1,1,1,2-tetrafluoroethane, under the same operating conditions.