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US 2020/0048520 A1Published application
Working fluid for heat cycle, composition for heat cycle system, and heat cycle system
AssigneeAGC Inc.
InventorMasato FUKUSHIMA
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AssigneeAGC Inc.
InventorMasato FUKUSHIMA
Estimating the term…
A working fluid for heat cycle, a composition for a heat cycle system containing the working fluid, and a heat cycle system employing the composition are provided. The working fluid has a low global warming potential and can replace R410A. The working fluid contains trifluoroethylene, 2,3,3,3-tetrafluoropropene, and optionally a hydrofluoroolefin other than trifluoroethylene and 2,3,3,3-tetrafluoropropene. The total proportion of trifluoroethylene and 2,3,3,3-tetrafluoropropene based on the entire amount of the working fluid is from 70 to 100 mass %.
1-15. (canceled)
A working fluid for heat cycle, comprising:
Dependencies are inferred from the claim text.
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Comprising halogenated compounds: containing only fluorine as halogen
Hydrocarbons: unsaturated fluorinated hydrocarbons
Aspects relating to compounds used in compression type refrigeration systems: all components of a mixture being fluoro compounds
Aspects relating to compounds used in compression type refrigeration systems: replacement mixtures
Term end not estimated
The present invention relates to a working fluid for heat cycle, a composition for a heat cycle system comprising the working fluid, and a heat cycle system employing the composition.
In this specification, abbreviated names of halogenated hydrocarbon compounds are described in brackets after the compound names, and in this specification, the abbreviated names are employed instead of the compound names as the case requires.
Heretofore, as a working fluid for heat cycle such as a refrigerant for a refrigerator, a refrigerant for an air-conditioning apparatus, a working fluid for power generation system (such as exhaust heat recovery power generation), a working fluid for a latent heat transport apparatus (such as a heat pipe) or a secondary cooling fluid, a chlorofluorocarbon (CFC), such as chlorotrifluoromethane or dichlorodifluoromethane or a hydrochlorofluorocarbon (HCFC) such as chlorodifluoromethane has been used. However, influences of CFCs and HCFCs over the ozone layer in the stratosphere have been pointed out, and their use is regulated at present.
FIG. 1 is a diagram illustrating a composition range of a working fluid for heat cycle of the present invention in triangular coordinates of a composition (mass %) of a mixture of HFO-1123, HFO-1234yf and other component.
FIG. 2 is a schematic construction view illustrating a refrigerating cycle system as an example of a heat cycle system of the present invention.
FIG. 3 is a diagram illustrating a composition range of one embodiment of a working fluid for heat cycle of the present invention in triangular coordinates of a composition (mass %) of a mixture of HFO-1123, HFO-1234yf and HFC-32.
Now, the present invention will be described in detail.
The working fluid of the present invention is a working fluid for heat cycle, which contains HFO-1123 and HFO-1234yf, wherein the total proportion of HFO-1123 and HFO-1234yf based on the entire amount of the working fluid is from 70 to 100 mass %, and the proportion of HFO-1123 based on the total amount of HFO-1123 and HFO-1234yf is from 35 to 95 mass %.
As heat cycle, heat cycle by a heat exchanger such as a condenser or an evaporator may be used without any particular restriction.