WO2021075075A1 - 冷凍サイクル装置 - Google Patents
冷凍サイクル装置 Download PDFInfo
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- WO2021075075A1 WO2021075075A1 PCT/JP2020/015260 JP2020015260W WO2021075075A1 WO 2021075075 A1 WO2021075075 A1 WO 2021075075A1 JP 2020015260 W JP2020015260 W JP 2020015260W WO 2021075075 A1 WO2021075075 A1 WO 2021075075A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
- C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/106—Carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/126—Unsaturated fluorinated hydrocarbons
Definitions
- This disclosure relates to a refrigeration cycle device.
- chlorofluorocarbon CFC
- hydrochlorofluorocarbon HCFC
- chlorine-containing refrigerants such as CFC and HCFC is currently regulated because they have a large effect on the ozone layer in the stratosphere (effect on global warming).
- HFC hydrofluorocarbon
- HFC-based refrigerant examples include difluoromethane (also referred to as methylene fluoride, chlorofluorocarbon 32, HFC-32, R32, etc., hereinafter referred to as “R32”), tetrafluoroethane, R125 (1,1,1,2). , 2-Pentafluoroethane), R410A (pseudo-co-boiling mixed refrigerant of R32 and R125) and the like are known.
- difluoromethane also referred to as methylene fluoride, chlorofluorocarbon 32, HFC-32, R32, etc., hereinafter referred to as “R32”
- R125 tetrafluoroethane
- R410A pseudo-co-boiling mixed refrigerant of R32 and R125
- Hydrofluoroolefin (HFO) -based refrigerants are known as refrigerants having a smaller GWP than HFC-based refrigerants.
- HFO-based refrigerant examples include trifluoroethylene (also referred to as 1,1,2-trifluoroethane, HFO1123, R1123, etc., hereinafter referred to as “HFO1123”.
- GWP about 0.3
- 3-Tetrafluoropropene also referred to as 2,3,3,3-tetrafluoro-1-propene, HFO-1234yf, R1234yf, etc., hereinafter referred to as "R1234yf
- E -1,2-difluoro Ethylene
- HFO-1132 (E) also referred to as HFO-1132 (E)
- R1132 (E) -1,2-difluoro Ethylene
- Patent Document 1 Japanese Unexamined Patent Publication No. 2015-034296 discloses that a mixed refrigerant containing R32 and HFO1234yf is applied to a refrigeration cycle apparatus.
- Patent Document 2 Japanese Unexamined Patent Publication No. 2004-198063 discloses a refrigeration cycle apparatus using a non-azeotropic mixed refrigerant containing R32 and carbon dioxide (R744).
- the temperature gradient of the mixed refrigerant (the difference between the start temperature and the end temperature of evaporation or condensation in the heat exchanger. The temperature difference) may be up to about 25 ° C. Therefore, there is a high possibility that frost will occur in the refrigerant circuit during operation, and in particular, there is a high possibility that frost will occur during evaporation in an air conditioner or the like.
- a mixed refrigerant containing R744 is used in a refrigeration cycle device such as an air conditioner, such a problem may occur.
- the critical temperature of the mixed refrigerant (the maximum temperature at which the supercritical state does not occur) becomes lower.
- the critical temperature becomes lower than the operating temperature of the refrigeration cycle device, the mixed refrigerant is used in the supercritical region during the operation of the refrigeration cycle device. Since it cannot be used, there is also a problem that the performance of the refrigeration cycle device is deteriorated.
- the present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide a refrigeration cycle apparatus capable of suppressing frost formation, performance deterioration, etc. while reducing the influence of global warming.
- the refrigeration cycle apparatus includes a refrigeration circuit including a compressor, an outdoor heat exchanger, an indoor heat exchanger, and an expansion valve, and a refrigerant is sealed in the refrigeration circuit.
- the refrigerant contains three components, R32, HFO1123 and R744, and contains three components.
- the mass ratio of the three components is Point A indicating that R32, HFO1123 and R744 are 46% by mass, 54% by mass and 0% by mass, respectively, and R32, HFO1123 and R744 are 46% by mass, 37.2% by mass and 16.8% by mass, respectively.
- the first straight line connecting the point B indicating that there is
- a second straight line connecting the point A with a point C indicating that R32, HFO1123 and R744 are 0% by mass, 100% by mass and 0% by mass, respectively.
- a third straight line connecting the point C with a point D indicating that R32, HFO1123 and R744 are 0% by mass, 85.7% by mass and 14.3% by mass, respectively, and It is within the range surrounded by the first curve connecting the point B and the point D.
- the mass ratio of all the three components is larger than 0% by mass.
- FIG. 1 It is a schematic block diagram which shows the refrigeration cycle apparatus which concerns on Embodiment 1.
- FIG. It is a triangular composition diagram which shows the composition range (R32 / HFO1123 / R744) of the refrigerant which concerns on Embodiment 1.
- FIG. It is a triangular composition figure which shows the preferable composition range of the refrigerant which concerns on Embodiment 1.
- FIG. It is a triangular composition figure which shows the more preferable composition range of the refrigerant which concerns on Embodiment 1.
- FIG. It is a triangular composition figure which shows the more preferable composition range of the refrigerant which concerns on Embodiment 1.
- FIG. 1 It is a triangular composition figure which shows the more preferable composition range of the refrigerant which concerns on Embodiment 1.
- FIG. 2 is a triangular composition figure which shows the more preferable composition range of the refrigerant which concerns on Embodiment 1.
- FIG. 2 is a triangular composition diagram which shows the composition range (R32 / HFO1123 / R744) of the refrigerant which concerns on Embodiment 2.
- It is a triangular composition figure which shows the preferable composition range of the refrigerant which concerns on Embodiment 2.
- FIG. 1 is a schematic configuration diagram showing a refrigeration cycle apparatus according to the first embodiment.
- the refrigeration cycle device includes a compressor 1, a flow path switching valve (four-way valve) 2 for switching the flow direction during cooling and heating, an outdoor heat exchanger 3, an expansion valve 4, and an indoor heat exchanger 5. Equipped with a refrigeration circuit including.
- the flow path switching valve 2 is not required in the refrigeration cycle device that does not need to switch between cooling and heating.
- the high-temperature and high-pressure gaseous refrigerant compressed by the compressor 1 flows into the outdoor heat exchanger 3 via the flow path switching valve 2 (flow path shown by the solid line) and condenses there.
- the liquid refrigerant condensed in the outdoor heat exchanger 3 flows into the indoor heat exchanger 5 via the expansion valve 4 and evaporates (vaporizes) there.
- the gaseous refrigerant evaporated in the indoor heat exchanger 5 returns to the compressor 1 via the flow path switching valve 2 (flow path shown by the solid line).
- the refrigerant circulates in the refrigerating circuit of the refrigerating cycle device in the direction of the solid arrow shown in FIG.
- the high-temperature and high-pressure gaseous refrigerant compressed by the compressor 1 flows into the indoor heat exchanger 5 via the flow path switching valve 2 (flow path shown by the dotted line) and condenses there. To do.
- the liquid refrigerant condensed in the indoor heat exchanger 5 flows into the outdoor heat exchanger 3 via the expansion valve 4 and evaporates (vaporizes) there.
- the refrigerant evaporated in the outdoor heat exchanger 3 returns to the compressor 1 via the flow path switching valve 2 (flow path shown by the dotted line).
- the refrigerant circulates in the refrigerating circuit of the refrigerating cycle device in the direction of the broken line arrow shown in FIG.
- the above configuration is the minimum component of the refrigeration cycle device capable of performing cooling and heating operations.
- the refrigeration cycle apparatus of the present embodiment may further include other equipment such as a gas-liquid branching device, a receiver, an accumulator, and a high / low pressure heat exchanger.
- the refrigerant contains three components, R32, HFO1123 and R744, within a predetermined composition range.
- FIG. 2 is a composition diagram (triangular composition diagram) represented by triangular coordinates showing the composition ratio (mass ratio) of the three components (R32, HFO1123 and R744) contained in the refrigerant.
- the mass ratios of the three components are the first straight line connecting the points A and B, the second straight line connecting the points A and C, the third straight line connecting the points C and D, and the points. It is within the range (hatched portion in FIG. 2) surrounded by the first curve connecting B and the point D.
- the above range includes the composition ratio on the first straight line (however, the point A is excluded) and the first curve, and does not include the composition ratio on the second straight line and the third straight line.
- the first curve connecting the points B and D is as follows when the points B and D are connected, the component of R744 is the X-axis, and the direction perpendicular to the X-axis is the Y-axis. It is expressed by the formula (1) [boundary condition: 0 ⁇ Y ⁇ 39.84, 14.3 ⁇ X ⁇ 39.8].
- the first curve is a line showing a composition in which the temperature gradient of the refrigerant is 7 ° C. (a boundary line for whether or not frost formation occurs during heating operation when the outside air temperature is 7 ° C.).
- the temperature gradient of the refrigerant is less than 7 ° C., so that frost formation is suppressed even during the heating operation when the outside air temperature is 7 ° C. can do.
- the composition of the refrigerant is within the range of the shaded area in FIG. 2 (the lower side of the first curve connecting the points C and A), the ratio of R32 in the refrigerant is less than 46% by mass. Therefore, the GWP of the refrigerant is 15% or less of the GWP (2090) of R410A. Therefore, the refrigeration cycle device of the present embodiment has little influence on global warming.
- the critical temperature of the refrigerant can be 52 ° C. or higher, and the high pressure side. In, a two-phase region having a high heat transfer coefficient can be used. In a refrigeration cycle device such as an air conditioner, the upper limit of the usable outside air temperature is usually 52 ° C.
- the pressure loss of the refrigerant used in this embodiment is smaller than the pressure loss of R410A.
- a range surrounded by a straight line and a first curve connecting the points B2 and D2 (curve represented by the following equation (1-2) [boundary condition: 0 ⁇ Y ⁇ 39.84, 13.86 ⁇ X ⁇ 39.8]) ( It is preferably in the shaded area of FIG.
- the temperature gradient of the refrigerant is less than 6 ° C. Frost can be suppressed, and frost formation can be suppressed more reliably.
- the second straight line connecting the point C and the point C, the third straight line connecting the point C and the point D3 (R32 / HFO1123 / R744 0/88.7 / 11.3% by mass), and the point B3 and the point D3. It must be within the range (hatched portion in FIG. 4) surrounded by the first curve to be connected (the curve represented by the following equation (1-3) [boundary condition: 0 ⁇ Y ⁇ 39.84, 11.31 ⁇ X ⁇ 33.79]). preferable.
- Y -0.0000015304X 6 + 0.0002020386X 5 -0.0107078613X 4 + 0.2938468312X 3 -4.4132132218X 2 + 35.5395625683X-121.5449310970 ⁇ ⁇ ⁇ (1-3)
- the temperature gradient of the refrigerant is less than 5 ° C. Frost can be suppressed, and frost formation can be suppressed more reliably.
- Y -0.0000012965X 6 + 0.0001480600X 5 -0.0067494894X 4 + 0.1592511164X 3 -2.0569218561X 2 + 15.0215083652X-48.3962777129 ⁇ ⁇ ⁇ (1-4)
- the temperature gradient of the refrigerant is less than 4 ° C. Frost can be suppressed, and frost formation can be suppressed more reliably.
- the second straight line connecting the point C and the point C, the third straight line connecting the point C and the point D5 (R32 / HFO1123 / R744 0 / 93.3 / 6.7 mass%), and the point B5 and the point D5. It must be within the range (hatched portion in FIG. 6) surrounded by the first curve to be connected (the curve represented by the following equation (1-5) [boundary condition: 0 ⁇ Y ⁇ 39.84, 6.72 ⁇ X ⁇ 28.39]). preferable.
- Y -0.0000011225X 6 + 0.0001099130X 5 -0.0042657843X 4 + 0.0860474269X 3 -0.9562929239X 2 +6.8790153675X-21.8643132039 ⁇ ⁇ ⁇ (1-5)
- the temperature gradient of the refrigerant is less than 3 ° C. Frost can be suppressed, and frost formation can be suppressed more reliably.
- the second straight line connecting the point C and the point C, the third straight line connecting the point C and the point D6 (R32 / HFO1123 / R744 0 / 95.5 / 4.5% by mass), and the point B6 and the point D6. It must be within the range (shaded area in FIG. 7) surrounded by the first curve to be connected (curve represented by the following equation (1-6) [boundary condition: 0 ⁇ Y ⁇ 39.84, 4.5 ⁇ X ⁇ 25.7]). preferable.
- Y -0.0000010154X 6 + 0.0000840028X 5 -0.0027360831X 4 + 0.0471715299X 3 -0.4587670880X 2 + 3.7993138372X-11.1892990965 (0 ⁇ Y ⁇ 39.84, 4.5 ⁇ X ⁇ 25.7) ... (1-6)
- the temperature gradient of the refrigerant is less than 2 ° C. Frost can be suppressed, and frost formation can be suppressed more reliably.
- the refrigerant used in the present embodiment may be a three-component mixed refrigerant composed of only the above three components, or may further contain other components.
- examples of other components include HFO1234yf, HFO1234ze, HFO1132 (E), R290, R1270, R134a, R125, and other HFC-based refrigerants.
- the blending ratios of other components and the like are set within a range that does not interfere with the main effects of the present embodiment.
- HFO1132 (E) has substantially the same characteristics such as boiling point as HFO1123, in the refrigerant according to the present embodiment, a three-component mixed refrigerant in which HFO1123 is replaced with HFO1132 (E) is used as the refrigerant according to the present embodiment. Can be used in the same manner as.
- the refrigerant may further contain refrigerating machine oil.
- refrigerating machine oil examples include commonly used refrigerating machine oils (ester-based lubricating oil, ether-based lubricating oil, fluorine-based lubricating oil, mineral-based lubricating oil, hydrocarbon-based lubricating oil, and the like). In that case, it is preferable to select a refrigerating machine oil which is excellent in terms of compatibility with the refrigerant and stability.
- Specific examples of the refrigerating machine oil include, but are not limited to, polyalkylene glycol, polyol ester, polyvinyl ether, alkylbenzene, mineral oil and the like.
- the refrigerant may further contain a stabilizer if necessary, for example, when a high degree of stability is required under harsh usage conditions.
- Stabilizers are components that improve the stability of the refrigerant against heat and oxidation.
- the stabilizer include known stabilizers conventionally used in refrigeration cycle devices, such as oxidation resistance improvers, heat resistance improvers, and metal deactivators.
- the stabilizer examples include (i) aliphatic nitro compounds such as nitromethane and nitroethane, aromatic nitro compounds such as nitrobenzene and nitrostyrene, ethers such as 1,4-dioxane, and 2,2,3,3,3. -Amines such as pentafluoropropylamine and diphenylamine, butylhydroxyxylene, benzotriazole and the like can be mentioned.
- the stabilizer may be used alone or in combination of two or more.
- the blending amount of the stabilizer varies depending on the type, but it should not interfere with the properties of the refrigerant composition.
- the mixing ratio of the stabilizer is preferably 0.01 to 5% by mass, more preferably 0.05 to 2% by mass, based on the total amount of the refrigerant (100% by mass).
- the refrigerant may further contain a polymerization inhibitor.
- the polymerization inhibitor include 4-methoxy-1-naphthol, hydroquinone, hydroquinone methyl ether, dimethyl-t-butylphenol, 2,6-di-tert-butyl-p-cresol, benzotriazole and the like.
- the compounding ratio of the polymerization inhibitor is preferably 0.01 to 5% by mass, more preferably 0.05 to 2% by mass, based on the total amount of the refrigerant (100% by mass).
- the refrigerating cycle device is not particularly limited, but a commercial or household air conditioner (air conditioner), a car air conditioner, a heat pump for a vending machine, a refrigerator, a refrigerator in a container for marine transportation, or a refrigerator is used.
- air conditioner air conditioner
- a heat pump for a vending machine a refrigerator
- a refrigerator in a container for marine transportation or a refrigerator
- examples include a refrigerator for cooling, a chiller unit, and a turbo chiller.
- the refrigeration cycle device of the present embodiment can also be used for a dedicated heating cycle device such as a floor heating device and a snow melting device.
- a dedicated heating cycle device such as a floor heating device and a snow melting device.
- it is useful as an air conditioner (air conditioner) for business use or home use, which requires miniaturization of equipment.
- the description is described in the case where the outdoor unit and the indoor unit are connected one-to-one, but there are a plurality of indoor units for one outdoor unit. Also, there may be a plurality of indoor units for a plurality of outdoor units.
- the refrigerating cycle device of the present embodiment may be a room air conditioner or a packaged air conditioner capable of switching between cooling and heating, or may be a refrigerating cycle device for low temperature equipment such as a refrigerator.
- the refrigeration cycle device of the present embodiment is preferably a refrigeration cycle device (air conditioner) for air conditioning.
- refrigeration cycle device for air conditioning
- examples of the refrigeration cycle device (air conditioner) for air conditioning include room air conditioners, package air conditioners, multi air conditioners for buildings, window type air conditioners, mobile air conditioners, and the like.
- the flow direction of the refrigerant with respect to the air flow direction is set so as to maximize the period efficiency in consideration of the overall energy efficiency in a certain period such as APF (year-round energy consumption efficiency). It is preferable to be done. This makes it possible to improve the actual energy consumption efficiency (performance) of the refrigeration cycle device used for air conditioning. Specifically, a method of setting the flow direction of the refrigerant with respect to the flow direction of air so as to maximize the period efficiency will be described below.
- the outdoor heat exchanger condenser
- the indoor heat exchanger evaporator
- the temperature changes even in the two-phase region, so that the evaporator is also countercurrent. It is preferable that it is designed to be.
- the outdoor heat exchanger (evaporator) side is countercurrent
- the indoor heat exchanger (condenser) side is countercurrent
- the outdoor heat exchanger side is parallel during heating. It is preferable that the indoor heat exchanger side is designed to have a parallel flow.
- the amount of heat exchanged by the indoor heat exchanger (during condensation) is the largest. Therefore, in order to maximize the period efficiency, the outdoor heat exchanger (during evaporation) side is countercurrent, the indoor heat exchanger (during condensation) side is countercurrent, and the outdoor heat exchanger side is parallel flow during cooling. It is preferable that the indoor heat exchanger side is designed to have a parallel flow.
- the outdoor heat exchanger (during evaporation) side flows in parallel, similar to the air conditioner that mainly heats. It is preferable that the indoor heat exchanger (during condensation) side is designed to have a countercurrent flow.
- the above design is for an air conditioner capable of reversible operation of cooling and heating as shown in FIG. Further, by combining a Lorentz cycle, a hexagonal valve, etc., countercurrent may be generated in either the outdoor heat exchanger or the indoor heat exchanger during both cooling and heating (indoor and indoor). Countercurrent cycle on one side outdoors).
- the refrigeration cycle apparatus using the non-azeotropic mixed refrigerant is designed to have high energy efficiency.
- the outdoor heat exchanger or indoor heat exchanger or indoor heat exchanger can be used both during cooling and heating. Both heat exchangers may be designed to be countercurrent (countercurrent cycles both indoors and outdoors). In this case, the refrigeration cycle apparatus using the non-azeotropic mixed refrigerant is designed to have the highest energy efficiency.
- a part or all of the heat exchanger is always countercurrent. (Partially countercurrent: partially countercurrent cycle, all countercurrent: completely countercurrent cycle).
- the indoor and outdoor heat exchangers may be divided into a plurality of parts and combined, and a switching mechanism may be provided to make a cooling / heating variable pass so that the flow velocity of the refrigerant is large at the time of condensation and the flow velocity is slowed at the time of evaporation.
- Embodiment 2 (Refrigerant)
- the composition ratio of the three components in the refrigerant is such that the pressure loss based on the saturated gas temperature of the refrigerant is equal to or less than the pressure loss of R32 widely used in air conditioners and the like. Is set, which is different from the first embodiment. Since the other basic configurations are the same as those in the first embodiment, overlapping description will be omitted.
- the refrigerant used in this embodiment is In the composition diagram showing the mass ratio of the three components in triangular coordinates,
- the mass ratio of the three components is A first straight line connecting a point E indicating that R32, HFO1123 and R744 are 46% by mass, 53.4% by mass and 0.6% by mass, respectively, and the point B.
- the point E and the point F indicating that R32, HFO1123 and R744 are 1.65% by mass, 82.8% by mass and 15.55% by mass, respectively, are connected, and the component of R744 is defined as the X-axis, and the X is taken as the X-axis.
- the second curve represented by the following equation (2) [boundary condition: 1.47 ⁇ Y ⁇ 39.84, 16.35 ⁇ X ⁇ 23.6] when the direction perpendicular to the axis is the Y axis, and When the point B and the point F are connected, the component of R744 is the X-axis, and the direction perpendicular to the X-axis is the Y-axis, the above equation (1) [boundary condition: 1.47 ⁇ Y ⁇ 39.84, 16.35 It is within the range surrounded by the first curve represented by ⁇ X ⁇ 39.8].
- FIG. 8 is a triangular composition diagram showing the composition ratios of the three components (R32, HFO1123 and R744) in the refrigerant according to the present embodiment.
- R32, HFO1123 and R744 the composition ratios of the three components in the refrigerant according to the present embodiment.
- the mass ratio of the three components is surrounded by a first straight line connecting points E and B, a second curve connecting points E and F, and a first curve connecting points B and F. It is within the range (shaded area in FIG. 8).
- the above range includes composition ratios on the first straight line, the first curve, and the second curve.
- the second curve connecting the points E and F has the above equation (2) [boundary condition: 1.47 ⁇ Y ⁇ 39.84] when the component of R744 is the X axis and the direction perpendicular to the X axis is the Y axis. , 16.35 ⁇ X ⁇ 23.6].
- the second curve is a curve shown in FIG. 14B in which the pressure loss ratio is R32 or less (the boundary line of the pressure loss of R32 or less).
- the pressure loss of the refrigerant can be made equal to or less than R32. Therefore, the pressure loss in the pipe or the like can be reduced more reliably than in the first embodiment.
- the first curve connecting the point B and the point F has the above equation (1) [boundary condition: 1.47 ⁇ Y ⁇ 39.84] when the component of R744 is the X axis and the direction perpendicular to the X axis is the Y axis. , 16.35 ⁇ X ⁇ 39.8] (the formula is the same as that of the first embodiment, and only the boundary conditions are different from the first embodiment).
- Y -0.0000035504X 6 + 0.0005589786X 5 -0.0358319203X 4 + 1.2005487479X 3 -22.2016290444X 2 + 216.0131860167X-866.1843532277 ⁇ (1-7)
- the temperature gradient of the refrigerant is less than 6 ° C. Frost can be suppressed, and frost formation can be suppressed more reliably.
- the second curve connecting the point F3 and the point F3 (the curve represented by the above equation (2) [boundary condition: 5.88 ⁇ Y ⁇ 39.84, 16.44 ⁇ X ⁇ 23.6]), and the point B3 and the point F3 (R32 / HFO1123 /).
- the first curve connecting R744 6.8 / 80.2 / 13% by mass) (curve represented by the following equation (1-8) [boundary condition: 5.88 ⁇ Y ⁇ 39.84, 16.44 ⁇ X ⁇ 33.79]) It is preferably within the range surrounded by (the shaded area in FIG. 10).
- Y -0.0000063811X 6 + 0.0009332843X 5 -0.0560517185X 4 + 1.7733026830X 3 -31.1858892719X 2 + 290.1995034461X-1115.9372084806 ⁇ (1-8)
- the temperature gradient of the refrigerant is less than 5 ° C. Frost can be suppressed, and frost formation can be suppressed more reliably.
- the curve to be formed) and the first curve connecting the points B4 and F4 (curve represented by the following equation (1-9) [boundary condition: 9.66 ⁇ Y ⁇ 39.84, 16.65 ⁇ X ⁇ 31.05]). It is preferable that it is within the range (hatched portion in FIG. 11).
- Y -0.0000063892X 6 + 0.0008593393X 5 -0.0476999288X 4 + 1.4030033773X 3 -23.0733208088X 2 + 202.3626203801X-736.7881385396 ⁇ (1-9)
- the temperature gradient of the refrigerant is less than 4 ° C. Frost can be suppressed, and frost formation can be suppressed more reliably.
- the second curve connecting the point F5 (R32 / HFO1123 / R744 16.46 / 74.69 / 8.86 mass%) (the above equation (2) [boundary condition: 14.25 ⁇ Y ⁇ 39.84, 17.09 ⁇ X ⁇ 23.6] and the first curve connecting the points B5 and F5 (represented by the following equation (1-10) [boundary conditions: 14.25 ⁇ Y ⁇ 39.84, 17.09 ⁇ X ⁇ 28.39]. It is preferably within the range (hatched portion in FIG. 12) surrounded by the curved line.
- Y -0.0000010569X 6 + 0.0000655262X 5 + 0.0001778327X 4 -0.1023748302X 3 + 3.0702677272X 2 -36.0180180702X + 159.7170512757 ⁇ (1-10)
- the temperature gradient of the refrigerant is less than 3 ° C. Frost can be suppressed, and frost formation can be suppressed more reliably.
- the curve represented by) and the first curve connecting the point B6 and the point F6 (the curve represented by the following equation (1-11) [boundary condition: 20.78 ⁇ Y ⁇ 39.84, 18.07 ⁇ X ⁇ 25.72]) It is preferably within the range surrounded by (the shaded area in FIG. 13).
- FIG. 14 shows the characteristics of the refrigerant according to the first and second embodiments when 40% by mass of R32 is mixed and the mixing ratio of R744 is changed.
- the pressure loss ratio is 100% or less as a ratio to R410A even if the R744 ratio is 0% by mass in the first embodiment.
- FIG. 14A is a graph showing the value of the temperature gradient when the mixing ratio of R744 is changed.
- the R744 ratio is 19% by mass (wt%) or less, and the temperature gradient is 7 ° C. or less.
- FIG. 14B is a graph showing the value of the pressure loss ratio at the ratio of R32 to R32 when the mixing ratio of R744 is changed.
- the R744 ratio is 1.65% by mass or more, and the pressure loss ratio is 100% or less.
- FIG. 14 (c) is a graph showing the value of the critical temperature when the mixing ratio of R744 is changed.
- the R744 ratio is 44.6% by mass or less, and the critical temperature is 52 ° C. or less.
- the mixed refrigerant having a temperature gradient of 7 ° C. or lower, a pressure loss smaller than R32, and a critical temperature of 52 ° C. or higher is R32.
- the ratio is 40% by mass, it is considered necessary that the ratio of R744 is 1.65 to 19% by mass.
- the composition range of the mixed refrigerant satisfying each desired condition can be determined. This result is the composition range of the refrigerant shown in the above triangular composition diagram.
- Embodiment 3 The refrigeration cycle apparatus according to the present embodiment is different from the first embodiment in that the refrigerant further contains CF3I (trifluoroiodomethane). Since the other basic configurations are the same as those in the first embodiment, overlapping description will be omitted.
- CF3I trifluoroiodomethane
- the refrigerant used in this embodiment is Contains four components, R32, HFO1123, CF3I and R744,
- the total ratio of R32 and R744 to the total amount of the refrigerant is 8 to 20% by mass
- the ratio of HFO1123 is 50 to 70% by mass
- the ratio of CF3I is 10 to 30% by mass.
- a mixed refrigerant of R32, HFO1123 and CF3I has been proposed in order to reduce GWP.
- HFO1123 causes a disproportionation reaction and has a safety problem. Therefore, for the purpose of suppressing the disproportionation reaction of HFO1123, disproportionation is suppressed by mixing CF3I and R32 with HFO1123.
- FIG. 15 shows the disproportionation pressure at the time of the disproportionation reaction when the composition of the HFO1123, R32 and CF3I mixed refrigerant is changed.
- the points surrounded by the lines on the stars in FIG. 15 are the compositions in which the disproportionation reaction does not occur in the air conditioner. It is considered that the disproportionation reaction does not occur if the disproportionation pressure is equal to or higher than the point surrounded by the star-shaped line in FIG.
- the first is a method of increasing the ratio of HFO1123. In this case, the disproportionation pressure decreases and the disproportionation reaction occurs.
- the second method is to increase the ratio of CF3I.
- the disproportionation pressure of the refrigerant is equal to or less than the disproportionation pressure of the points surrounded by the star-shaped lines in FIG. 15 up to the composition ratio of the points surrounded by the round lines in FIG. It is possible to do.
- R32 / HFO1123 / CF3I 20 [%] / 60 [%] / 20 [%]
- GWP 137. It cannot be less than 137. That is, there is a problem that the three-kind mixed refrigerant composed of R32, HFO1123 and CF3I cannot be reduced to GWP137 or less. In order to solve such a problem, it is considered necessary to use four or more kinds of mixed refrigerants.
- Rule (1) is for avoiding frost formation at the heating rating (7 ° C. DB / 6 ° C. WB), and rule (2) is for preventing disproportionation reaction.
- DB means dry-bulb temperature
- WB means wet-bulb temperature.
- the inhibitory effect of R32 on the disproportionation reaction of HFO1123 is due to "thermal dilution". That is, it is considered that the disproportionation reaction can be suppressed by the thermal dilution effect by mixing the refrigerant having a large specific heat.
- the only refrigerant having a higher specific heat than R32 is R744 (CO 2 ). Therefore, by reducing R32 and mixing R744 (CO 2 ) in the refrigerant, the disproportionation reaction of HFO1123 can be suppressed, and there is a possibility that a mixed refrigerant capable of lowering GWP can be provided.
- the present embodiment it is possible to reduce the GWP while suppressing the disproportionation reaction as compared with the three-kind mixed refrigerant of R32, CF3I and HFO1123. Further, since R744 is mixed with the refrigerant, it is possible to suppress the pressure loss as compared with the above-mentioned three-kind mixed refrigerant.
- Table 2 lists specific examples of the refrigerant in this embodiment together with their characteristics.
- the "total GWP” in the table is a weighted average value obtained from the GWP values of each of the refrigerants shown in Table 3. Further, “OK” in the table means that it is contained in the refrigerant according to the present embodiment, and “NG” means that it is not included in the refrigerant according to the present embodiment.
- the refrigerant used in the present embodiment may be a four-component mixed refrigerant consisting of only the above four components, or may further contain other components.
- examples of other components include HFO1234yf, HFO1234ze, HFO1132 (E), R290, R1270, R134a, R125, and other HFC-based refrigerants.
- the blending ratios of other components and the like are set within a range that does not interfere with the main effects of the present embodiment.
- HFO1132 (E) has substantially the same characteristics such as boiling point as HFO1123, in the refrigerant according to the present embodiment, a three-component mixed refrigerant in which HFO1123 is replaced with HFO1132 (E) is used as the refrigerant according to the present embodiment. Can be used in the same manner as.
- Embodiment 4 The refrigeration cycle apparatus according to the present embodiment is different from the third embodiment in that the refrigerant further contains R1234yf. That is, the refrigerant used in this embodiment contains five components of R32, HFO1123, CF3I, R744 and R1234yf. Since the other basic configurations are the same as those in the third embodiment, overlapping description will be omitted.
- the total ratio of R32, R744 and R1234yf to the total amount of the refrigerant is 8 to 20% by mass, the ratio of HFO1123 is 50 to 70% by mass, and the ratio of CF3I is 10 to 30% by mass. Moreover, it is preferable that R744 / R1234yf> 0.65.
- the refrigerant of the third embodiment has a higher pressure than the three-kind mixed refrigerant of R32, HFO1123 and CF3I, it may be necessary to increase the wall thickness of the pipe.
- the pressure of the refrigerant is lowered by using R1234yf, the operating pressure can be lowered, so that there is no need to increase the wall thickness of the pipe.
- Tables 4 and 5 list specific examples of the refrigerant in this embodiment together with their characteristics.
- GWP in the table is a weighted average value obtained from the GWP value of each refrigerant shown in Table 3.
- OK means that it is contained in the refrigerant according to the present embodiment
- NG means that it is not contained in the refrigerant according to the present embodiment.
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Abstract
Description
三成分の質量比率を三角座標で表した組成図において、
三成分の質量比率が、
R32、HFO1123およびR744がそれぞれ46質量%、54質量%および0質量%であることを示す点Aと、R32、HFO1123およびR744がそれぞれ46質量%、37.2質量%および16.8質量%であることを示す点Bとを結ぶ第1直線、
前記点Aと、R32、HFO1123およびR744がそれぞれ0質量%、100質量%および0質量%であることを示す点Cとを結ぶ第2直線、
前記点Cと、R32、HFO1123およびR744がそれぞれ0質量%、85.7質量%および14.3質量%であることを示す点Dとを結ぶ第3直線、および、
前記点Bと前記点Dとを結ぶ第1曲線によって囲まれる範囲内にあり、
前記三成分の全ての質量比率が0質量%より大きい。
実施の形態1.
まず、本実施の形態の冷凍サイクル装置の概要について簡単に説明する。図1は、実施の形態1に係る冷凍サイクル装置を示す概略構成図である。冷凍サイクル装置は、圧縮機1と、冷房時と暖房時の流れ方向を切替える流路切替弁(四方弁)2と、室外熱交換器3と、膨張弁4と、室内熱交換器5とを含む冷凍回路を備える。なお、冷房と暖房を切替える必要のない冷凍サイクル装置においては、流路切替弁2は必要ない。
次に、本実施の形態において、冷凍回路内に封入される冷媒について説明する。該冷媒は、R32、HFO1123およびR744の三成分を所定の組成範囲内で含んでいる。
Y=0.0000010672X6-0.0001465588X5+0.0082178036X4-0.2396523289X3+3.8262954499X2-31.0173735188X+96.765465851 ・・・(1)
なお、第1曲線は、冷媒の温度勾配が7℃になる組成を示す線(外気温が7℃の場合の暖房運転時に着霜が生じるか否かの境界線)である。
Y=-0.0000016567X6+0.0002536428X5-0.0156242136X4+0.4985214814X3-8.7105880053X2+80.1336472203X-306.1133650192 ・・・(1-2)
この場合、図3中の点B2と点D2とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が6℃未満であるため、外気温が6℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
Y=-0.0000015304X6+0.0002020386X5-0.0107078613X4+0.2938468312X3-4.4132132218X2+35.5395625683X-121.5449310970 ・・・(1-3)
この場合、図4中の点B3と点D3とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が5℃未満であるため、外気温が5℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
Y=-0.0000012965X6+0.0001480600X5-0.0067494894X4+0.1592511164X3-2.0569218561X2+15.0215083652X-48.3962777129 ・・・(1-4)
この場合、図5中の点B4と点D4とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が4℃未満であるため、外気温が4℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
Y=-0.0000011225X6+0.0001099130X5-0.0042657843X4+0.0860474269X3-0.9562929239X2+6.8790153675X-21.8643132039 ・・・(1-5)
この場合、図6中の点B5と点D5とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が3℃未満であるため、外気温が3℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
Y=-0.0000010154X6+0.0000840028X5-0.0027360831X4+0.0471715299X3-0.4587670880X2+3.7993138372X-11.1892990965(0≦Y≦39.84、4.5≦X≦25.7) ・・・(1-6)
この場合、図7中の点B6と点D6とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が2℃未満であるため、外気温が2℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
本実施の形態において、冷凍サイクル装置としては、特に限定されないが、業務用または家庭用の空気調和機(エアコン)、カーエアコン、自動販売機用ヒートポンプ、冷蔵庫、海上輸送等のコンテナ内や冷蔵庫を冷却する冷凍機、チラーユニット、ターボ冷凍機等が挙げられる。
実施の形態2.
(冷媒)
本実施の形態に係る冷凍サイクル装置は、冷媒の飽和ガス温度基準の圧力損失が、空気調和機等に広く利用されているR32の圧力損失以下となるように、冷媒中の三成分の組成比率が設定されている点で、実施の形態1とは異なる。それ以外の基本構成は実施の形態1と同じであるため、重複する説明については省略する。
前記三成分の質量比率を三角座標で表した組成図において、
前記三成分の質量比率が、
R32、HFO1123およびR744がそれぞれ46質量%、53.4質量%および0.6質量%であることを示す点Eと、前記点Bとを結ぶ第1直線、
前記点Eと、R32、HFO1123およびR744がそれぞれ1.65質量%、82.8質量%および15.55質量%であることを示す点Fとを結び、R744の成分をX軸とし、該X軸に対して垂直方向をY軸としたときに下記式(2)[境界条件:1.47≦Y≦39.84、16.35≦X≦23.6]で表される第2曲線、および、
前記点Bと前記点Fとを結び、R744の成分をX軸とし、該X軸に対して垂直方向をY軸としたときに前記式(1)[境界条件:1.47≦Y≦39.84、16.35≦X≦39.8]で表される第1曲線
によって囲まれる範囲内にある。
Y=6.2229811918E-08X10-6.1417665837E-06X9+0.0002122018X8-0.0025390680X7+0.0005289805X6-0.2205484505X5-6.6805986428X4+984.2366988008X3-24963.7886980727X2+258533.891864178X-993240.057394683 ・・・(2)
図8は、本実施の形態に係る冷媒中の三成分(R32、HFO1123およびR744)の組成比率を示す三角組成図である。該三成分の質量比率は、図8において、点Eと点Bを結ぶ第1直線、点Eと点Fとを結ぶ第2曲線、および、点Bと点Fとを結ぶ第1曲線によって囲まれる範囲(図8の斜線部)内にある。なお、上記範囲は、第一直線、第1曲線および第2曲線上の組成比率を含む。
Y=-0.0000035504X6+0.0005589786X5-0.0358319203X4+1.2005487479X3-22.2016290444X2+216.0131860167X-866.1843532277 ・・・(1-7)
この場合、図9中の点B2と点F2とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が6℃未満であるため、外気温が6℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
Y=-0.0000063811X6+0.0009332843X5-0.0560517185X4+1.7733026830X3-31.1858892719X2+290.1995034461X-1115.9372084806 ・・・(1-8)
この場合、図10中の点B3と点F3とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が5℃未満であるため、外気温が5℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
Y=-0.0000063892X6+0.0008593393X5-0.0476999288X4+1.4030033773X3-23.0733208088X2+202.3626203801X-736.7881385396 ・・・(1-9)
この場合、図11中の点B4と点F4とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が4℃未満であるため、外気温が4℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
Y=-0.0000010569X6+0.0000655262X5+0.0001778327X4-0.1023748302X3+3.0702677272X2-36.0180180702X+159.7170512757 ・・・(1-10)
この場合、図12中の点B5と点F5とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が3℃未満であるため、外気温が3℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
Y=-0.0000524007X5+0.0047461037X4-0.1677724456X3+2.9582326141X2-24.7570597636X+87.0409148360 ・・・(1-11)
この場合、図13中の点B6と点F6とを結ぶ第1曲線の左側の組成範囲では、冷媒の温度勾配が2℃未満であるため、外気温が2℃の場合の暖房運転時でも着霜を抑制することができ、より確実に着霜を抑制することができる。
(冷媒)
本実施の形態に係る冷凍サイクル装置は、冷媒がさらにCF3I(トリフルオロヨードメタン)を含有する点で、実施の形態1とは異なる。それ以外の基本構成は実施の形態1と同じであるため、重複する説明については省略する。
R32、HFO1123、CF3IおよびR744の四成分を含有し、
前記冷媒の総量に対して、R32およびR744の合計の比率が8~20質量%であり、HFO1123の比率が50~70質量%であり、CF3Iの比率が10~30質量%である。
HFO1123=60.0[%]
CF3I=20[%]
ここで、R32を減らして、CF3Iを増やすと、不均化反応が起こるため、CF3Iを増やすことは検討しなかった。
(2) [低圧側の「飽和ガス比熱×飽和ガス密度」]>[R32/HFO1123/CF3I=20%/60%/20%の場合における「飽和ガス比熱×飽和ガス密度」]
(表2等の「ρ×cp」の行を参照)
ここで、混合冷媒の構成成分となり得る単一冷媒の特性を表1に示す。なお、表1に示される特性は、吸入飽和温度=10℃、吸入SH(吸入温度-吸入飽和温度)=1Kの場合における吸入時における単一冷媒の物性である。
本実施の形態に係る冷凍サイクル装置は、冷媒がさらにR1234yfを含有する点で、実施の形態3とは異なる。すなわち、本実施の形態に用いられる冷媒は、R32、HFO1123、CF3I、R744およびR1234yfの五成分を含有する。それ以外の基本構成は実施の形態3と同じであるため、重複する説明については省略する。
Claims (11)
- 圧縮機、室外熱交換器、室内熱交換器および膨張弁を含む冷凍回路を備え、
前記冷凍回路内に冷媒が封入されており、
前記冷媒は、R32、HFO1123およびR744の三成分を含有し、
前記三成分の質量比率を三角座標で表した組成図において、
前記三成分の質量比率が、
R32、HFO1123およびR744がそれぞれ46質量%、54質量%および0質量%であることを示す点Aと、R32、HFO1123およびR744がそれぞれ46質量%、37.2質量%および16.8質量%であることを示す点Bとを結ぶ第1直線、
前記点Aと、R32、HFO1123およびR744がそれぞれ0質量%、100質量%および0質量%であることを示す点Cとを結ぶ第2直線、
前記点Cと、R32、HFO1123およびR744がそれぞれ0質量%、85.7質量%および14.3質量%であることを示す点Dとを結ぶ第3直線、および、
前記点Bと前記点Dとを結ぶ第1曲線
によって囲まれる範囲内にあり、
前記三成分の全ての質量比率が0質量%より大きい、冷凍サイクル装置。 - 前記第1曲線は、R744の成分をX軸とし、該X軸に対して垂直方向をY軸としたときに下記式(1)[境界条件:0≦Y≦39.84、14.3≦X≦39.8]で表される、請求項1に記載の冷凍サイクル装置。
Y=0.0000010672X6-0.0001465588X5+0.0082178036X4-0.2396523289X3+3.8262954499X2-31.0173735188X+96.765465851 ・・・(1)
- 前記三成分の質量比率を三角座標で表した組成図において、
前記三成分の質量比率が、
R32、HFO1123およびR744がそれぞれ46質量%、53.4質量%および0.6質量%であることを示す点Eと、前記点Bとを結ぶ第1直線、
前記点Eと、R32、HFO1123およびR744がそれぞれ1.65質量%、82.8質量%および15.55質量%であることを示す点Fとを結び、R744の成分をX軸とし、該X軸に対して垂直方向をY軸としたときに下記式(2)[境界条件:1.47≦Y≦39.84、16.35≦X≦23.6]で表される第2曲線、および、
前記点Bと前記点Eとを結び、R744の成分をX軸とし、該X軸に対して垂直方向をY軸としたときに前記式(1)[境界条件:1.47≦Y≦39.84、16.35≦X≦39.8]で表される第1曲線
によって囲まれる範囲内にある、請求項2に記載の冷凍サイクル装置。
Y=6.2229811918E-08X10-6.1417665837E-06X9+0.0002122018X8-0.0025390680X7+0.0005289805X6-0.2205484505X5-6.6805986428X4+984.2366988008X3-24963.7886980727X2+258533.891864178X-993240.057394683 ・・・(2)
- 空気調和用である、請求項1~3のいずれか1項に記載の冷凍サイクル装置。
- 前記室外熱交換器および前記室内熱交換器のいずれか一方において、それらが凝縮器であっても蒸発器であっても、空気の流れに対する前記冷媒の流れが反対方向となる、請求項4に記載の冷凍サイクル装置。
- 前記室外熱交換器および前記室内熱交換器の両方において、それらが凝縮器であっても蒸発器であっても、空気の流れに対する前記冷媒の流れが反対方向となる、請求項4に記載の冷凍サイクル装置。
- 前記室外熱交換器および前記室内熱交換器のいずれか一方または両方において、それらの熱交換器の一部が凝縮器であっても蒸発器であっても、空気の流れに対する前記冷媒の流れが反対方向となる、請求項4に記載の冷凍サイクル装置。
- 前記冷凍サイクル装置に封入された前記冷媒は、HFO1123がHFO1132(E)に置き換えられてなる冷媒である、請求項1~7のいずれか1項に記載の冷凍サイクル装置。
- 圧縮機、室外熱交換器、室内熱交換器および膨張弁を含む冷凍回路を備え、
前記冷凍回路内に冷媒が封入されており、
前記冷媒は、R32、HFO1123、CF3IおよびR744の四成分を含有し、
前記冷媒の総量に対して、R32およびR744の合計の比率が8~20質量%であり、HFO1123の比率が50~70質量%であり、CF3Iの比率が10~30質量%である、冷凍サイクル装置。 - 前記冷媒は、R1234yfをさらに含み、
R32、R744およびR1234yfの合計の比率が8~20質量%であり、
R744/R1234yf>0.65である、
請求項9に記載の冷凍サイクル装置。 - 前記冷凍サイクル装置に封入された前記冷媒は、HFO1123がHFO1132(E)に置き換えられてなる冷媒である、請求項9または10に記載の冷凍サイクル装置。
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Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001050685A (ja) * | 1999-08-06 | 2001-02-23 | Sanyo Electric Co Ltd | 熱交換器 |
JP2004198063A (ja) | 2002-12-20 | 2004-07-15 | Sanyo Electric Co Ltd | 非共沸混合冷媒および冷凍サイクル、並びに冷凍装置 |
JP2005015633A (ja) * | 2003-06-26 | 2005-01-20 | Matsushita Electric Ind Co Ltd | 混合冷媒とそれを用いた冷凍サイクル装置 |
JP2009024152A (ja) * | 2007-06-20 | 2009-02-05 | Daikin Ind Ltd | 温暖化係数が低いトリフルオロヨードメタンとジフルオロメタンの不燃性組成物 |
JP2015034296A (ja) | 2010-01-27 | 2015-02-19 | ダイキン工業株式会社 | ジフルオロメタン(HFC32)と2,3,3,3−テトラフルオロプロペン(HFO1234yf)を含む冷媒組成物 |
WO2015115252A1 (ja) * | 2014-01-31 | 2015-08-06 | 旭硝子株式会社 | 熱サイクル用作動媒体、熱サイクルシステム用組成物および熱サイクルシステム |
WO2015125884A1 (ja) * | 2014-02-20 | 2015-08-27 | 旭硝子株式会社 | 熱サイクルシステム用組成物および熱サイクルシステム |
JP2018040517A (ja) * | 2016-09-06 | 2018-03-15 | 日立ジョンソンコントロールズ空調株式会社 | 空気調和機 |
JP2018104565A (ja) * | 2016-12-27 | 2018-07-05 | パナソニック株式会社 | 冷凍サイクル用作動媒体および冷凍サイクルシステム |
JP2019504175A (ja) * | 2015-12-07 | 2019-02-14 | メキシケム フロー エセ・ア・デ・セ・ヴェ | 伝熱組成物 |
JP2019512031A (ja) * | 2016-02-29 | 2019-05-09 | ザ ケマーズ カンパニー エフシー リミテッド ライアビリティ カンパニー | ジフルオロメタン、ペンタフルオロエタン、テトラフルオロエタン、テトラフルオロプロペン、及び二酸化炭素を含む冷媒混合物、並びにその使用 |
JP2019214720A (ja) * | 2018-06-12 | 2019-12-19 | ダイキン工業株式会社 | 冷媒を含有する組成物、熱移動媒体及び熱サイクルシステム |
JP2020002380A (ja) * | 2018-06-22 | 2020-01-09 | ダイキン工業株式会社 | 冷媒を含む組成物、その使用、並びにそれを有する冷凍機及びその冷凍機の運転方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014155545A1 (ja) * | 2013-03-27 | 2014-10-02 | 日立アプライアンス株式会社 | 空気調和機 |
US10393391B2 (en) * | 2014-10-16 | 2019-08-27 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus |
EP4098714A1 (en) * | 2015-06-01 | 2022-12-07 | Agc Inc. | Working fluid for heat cycle, composition for heat cycle system and heat cycle system |
JP2017145975A (ja) * | 2016-02-15 | 2017-08-24 | 三菱電機株式会社 | 冷凍サイクル装置、冷凍サイクル装置の製造方法、冷凍サイクル装置のドロップイン方法、及び、冷凍サイクル装置のリプレース方法 |
EP4122996A1 (en) * | 2016-09-07 | 2023-01-25 | Agc Inc. | Working fluid for heat cycle, composition for heat cycle system, and heat cycle system |
JP6884572B2 (ja) * | 2016-12-27 | 2021-06-09 | パナソニック株式会社 | 冷凍サイクル用作動媒体および冷凍サイクルシステム |
JP6841066B2 (ja) * | 2017-02-03 | 2021-03-10 | ダイキン工業株式会社 | フッ素化炭化水素の混合物を冷媒として使用する方法、及び当該混合物を冷媒として使用した冷凍装置 |
-
2020
- 2020-04-03 WO PCT/JP2020/015260 patent/WO2021075075A1/ja unknown
- 2020-04-03 EP EP20876645.1A patent/EP4047287A4/en active Pending
- 2020-04-03 JP JP2021552092A patent/JP7354271B2/ja active Active
- 2020-04-03 AU AU2020367564A patent/AU2020367564B2/en active Active
- 2020-04-03 CN CN202080071509.9A patent/CN114556031B/zh active Active
- 2020-04-03 US US17/634,151 patent/US20220290901A1/en active Pending
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001050685A (ja) * | 1999-08-06 | 2001-02-23 | Sanyo Electric Co Ltd | 熱交換器 |
JP2004198063A (ja) | 2002-12-20 | 2004-07-15 | Sanyo Electric Co Ltd | 非共沸混合冷媒および冷凍サイクル、並びに冷凍装置 |
JP2005015633A (ja) * | 2003-06-26 | 2005-01-20 | Matsushita Electric Ind Co Ltd | 混合冷媒とそれを用いた冷凍サイクル装置 |
JP2009024152A (ja) * | 2007-06-20 | 2009-02-05 | Daikin Ind Ltd | 温暖化係数が低いトリフルオロヨードメタンとジフルオロメタンの不燃性組成物 |
JP2015034296A (ja) | 2010-01-27 | 2015-02-19 | ダイキン工業株式会社 | ジフルオロメタン(HFC32)と2,3,3,3−テトラフルオロプロペン(HFO1234yf)を含む冷媒組成物 |
WO2015115252A1 (ja) * | 2014-01-31 | 2015-08-06 | 旭硝子株式会社 | 熱サイクル用作動媒体、熱サイクルシステム用組成物および熱サイクルシステム |
WO2015125884A1 (ja) * | 2014-02-20 | 2015-08-27 | 旭硝子株式会社 | 熱サイクルシステム用組成物および熱サイクルシステム |
JP2019504175A (ja) * | 2015-12-07 | 2019-02-14 | メキシケム フロー エセ・ア・デ・セ・ヴェ | 伝熱組成物 |
JP2019512031A (ja) * | 2016-02-29 | 2019-05-09 | ザ ケマーズ カンパニー エフシー リミテッド ライアビリティ カンパニー | ジフルオロメタン、ペンタフルオロエタン、テトラフルオロエタン、テトラフルオロプロペン、及び二酸化炭素を含む冷媒混合物、並びにその使用 |
JP2018040517A (ja) * | 2016-09-06 | 2018-03-15 | 日立ジョンソンコントロールズ空調株式会社 | 空気調和機 |
JP2018104565A (ja) * | 2016-12-27 | 2018-07-05 | パナソニック株式会社 | 冷凍サイクル用作動媒体および冷凍サイクルシステム |
JP2019214720A (ja) * | 2018-06-12 | 2019-12-19 | ダイキン工業株式会社 | 冷媒を含有する組成物、熱移動媒体及び熱サイクルシステム |
JP2020002380A (ja) * | 2018-06-22 | 2020-01-09 | ダイキン工業株式会社 | 冷媒を含む組成物、その使用、並びにそれを有する冷凍機及びその冷凍機の運転方法 |
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