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279 results about "Pentafluoroethane" patented technology
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Pentafluoroethane is a refrigerant with the formula CF₃CHF₂. Although it has zero ozone depletion potential, it has high global warming potential, reported by the United States Environmental Protection Agency (EPA) as 3450 times that of carbon dioxide.
Heat transfer compositions of hydrofluorocarbons and a hydrofluoroolefin
The present invention relates to heat transfer compositions comprising 2,3,3,3-tetrafluoropropene, difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane for use in refrigeration, air-conditioning, heat pump systems, and other heat transfer applications. The inventive heat transfer compositions can possess reduced global warming potential while providing good capacity and performance.
Owner:ARKEMA INC
Working medium for heat cycle, composition for heat cycle system, and heat cycle system
InactiveCN106414654AImprove stabilityInhibition of the effects of global warmingCompressorCompression machines with non-reversible cycleEngineeringDouble bond
Provided are: a working medium for a heat cycle, said working medium containing 1,2-difluoroethylene and exhibiting high stability, reduced environmental impact, and cycle performance that can replace that of R410A (a pseudo-azeotropic mixed refrigerant including difluoromethane and pentafluoroethane at a mass ratio of 1:1) and 1,1,1,2-tetrafluoroethane; a composition for heat cycle system, said composition using the medium; and a heat cycle system using the composition. The working medium for a heat cycle is characterized by the inclusion of 1,2-difluoroethylene and at least two types of hydrofluorocarbon selected from the group of hydrofluorocarbons that include a carbon-carbon double bond other than a saturated hydrofluorocarbon and 1,2-difluoroethylene.
Owner:ASAHI GLASS CO LTD
Working fluid for heat cycle, composition for heat cycle system, and heat cycle system
InactiveUS20170058173A1Improve stabilityCycle performance sufficientCompressorCompression machines with non-reversible cycleWorking fluidMetal working fluid
To provide a working fluid for heat cycle containing 1,2-difluoroethylene, which has high stability, and which has cycle performance sufficient as an alternative to R410A (a pseudoazeotropic mixture refrigerant of difluoromethane and pentafluoroethane in a mass ratio of 1:1) or 1,1,1,2-tetrafluoroethane while the influence over global warming is suppressed, a composition for a heat cycle system comprising it, and a heat cycle system employing the composition.A working fluid for heat cycle, which contains at least two members selected from a saturated hydrofluorocarbon and a hydrofluorocarbon having a carbon-carbon double bond other than 1,2-difluoroethylene, and 1,2-difluoroethylene.
Owner:ASAHI GLASS CO LTD
Lubricating oil for compression-type refrigerators containing pentafluoroethane and a polyvinyl ether
A lubricating oil for compression-type refrigerators using a refrigerant containing pentafluoroethane which lubricating oil comprises a polyvinyl ether compound having (a) a constituting unit represented by general formula (I):or a polyvinyl ether compound having constituting unit (a) and (b) a constituting unit represented by general formula (I'):(wherein R represents a hydrocarbon group which has 1 to 3 carbon atoms and may have ether bond in the group, and R' represents a hydrocarbon group which has 3 to 20 carbon atoms and may have ether bond in the group) as the main component. The above lubricating oil shows excellent compatibility with hydrofluorocarbon refrigerants containing pentafluoroethane which can replace chlorofluorocarbons causing environmental pollution, has a high volume intrinsic resistance, and exhibits excellent stability and lubricating property.
Owner:IDEMITSU KOSAN CO LTD
Multi-element mixed working substance adapted to double temperature preparation of single-unit vapor compression type refrigerator
The invention relates the multicomponent mixed working substance used for preparing dual-temperature by single-machine vapor compression refrigerator. The low temperature is between -60- -40Deg.C and the high temperature is between -25- 10Deg.C. The multicomponent mixed working substance comprises lower boiling working substance and high boiling working substance. The lower boiling working substance comprises tetrafluoromethane, ethylene, ethane, fluoroethylene, trifluoromethane, fluoromethane, hydrofluoeic ether, carbon dioxide, difluoromethane and penfluoroethane; the high boiling working substance comprises trifluoro-thane, hydrofluoeic ether, propylene, propane, perfluoropropylamine, propadiene, cyclopropane, difluo-monochloromethane, penta-monochloroethane, perfluoroethane, difluoroethane, isobutene, butane, butylenes, isobutylene, sevofluoropropane, hexafluoropropane, penfluoropropane and tetrachloromonofluoroethane.
Owner:XI AN JIAOTONG UNIV
Isopropyl chloride with hydrofluorocarbon or hydrofluoroether as foam blowing agents
InactiveUS6646020B2Combustibility is reduced and eliminatedReduce flammabilityHeat-exchange elementsLiquid soapsPolyisocyanurateHydrofluoroether
A composition useful as a blowing agent having no flash point or reduced combustibility comprising 2-chloropropane and a gas selected from the group consisting of a fluorohydrocarbon, perfluorocarbons, fluoroethers, hydrofluoropolyethers and mixtures thereof is disclosed. A polyisocyanurate foam or a polyurethane modified polyisocyanurate foam having a mainly closed cell structure and also a method for preparing this foam, the latter comprising closed cells wherein a foam blowing agent consisting of a mixture of 2-chloropropane and one or more HFC compounds including pentafluoropropane, pentafluorobutane, heptafluoropropane, hexafluoropropane or pentafluoroethane are disclosed. Pentanes can be added if desired. Azeotropic mixtures in which 2-chloropropane is an ingredient are disclosed.
Owner:OCCIDENTAL CHEM CORP
REFRIGERANT COMPOSITION COMPRISING DIFLUOROMETHANE (HFC32), PENTAFLUOROETHANE (HFC125) AND 2, 3, 3, 3-TETRAFLUOROPROPENE (HFO1234yf)
InactiveUS20110108756A1Same and improved cycle performanceEase of evaluationHeat-exchange elementsDifluoromethane2,3,3,3-Tetrafluoropropene
Owner:DAIKIN IND LTD
Process for the preparation of pentafluoroethane, fluorination catalysts and process for the preparation thereof
InactiveUS6433233B1Reduce yieldHigh purityPreparation by halogen halide additionOrganic chemistry methodsChromium CompoundsIndium
A method of preparing pentafluoroethane wherein chlorine-containing carbon compounds are fluorinated in the presence of chromium catalysts that are in an amorphous state and wherein the main component is chromium compounds with the addition of at least one metal element selected from the group composed of indium, gallium, cobalt, nickel, zinc and aluminum and the average valence of the chromium in said chromium compounds is not less than +3.5 but not more than +5.0. And said chromium catalysts and a preparation method thereof.A method of preparing pentafluoroethane wherein the total yield of chlorofluoroethane by-products can be decreased without significantly deteriorating the generation activity of the pentafluoroethane and compounds which can be recycled in the reaction system. And to provide catalysts for this fluorination and a preparation method thereof.
Owner:DAIKIN IND LTD
Ternary heat-transfer fluids comprising difluoromethane, pentafluoroethane and tetrafluoropropene
InactiveUS20130055738A1Reduce the impact of heatLow GWPHeat-exchange elementsRefrigeration componentsThermodynamicsMaterials science
The invention relates to a ternary composition comprising: from 5 to 50% of difluoromethane;—from 2 to 20% of pentafluoroethane; and—from 30 to 90% of tetrafluoropropeae. The tetrafluoropropeae may be 1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene. This composition can he used as a heat-transfer fluid in vapor compression circuit.
Owner:ARKEMA FRANCE SA
High-voltage charge type nonaqueous electrolyte secondary cell
ActiveUS20090181311A1Improve cycle performanceInhibit reduction in cycle propertyOrganic electrolyte cellsLi-accumulatorsNickel compoundsSolvent
The preservation performance of a nonaqueous electrolyte secondary cell charged to high potential is improved while the initial capacity and the cycle property of the cell are also improved. The nonaqueous electrolyte secondary cell includes: a positive electrode having lithium phosphate and a positive electrode active material containing lithium cobalt compound oxide and lithium manganese nickel compound oxide having a layer structure, the lithium cobalt compound oxide having at least zirconium and magnesium added in LiCoO2; a negative electrode having a negative electrode active material; and a nonaqueous electrolyte having a nonaqueous solvent and an electrolytic salt. The potential of the positive electrode is more than 4.3 V and 5.1 V or less based on lithium. The nonaqueous electrolyte contains vinylene carbonate as the nonaqueous solvent and, as the electrolytic salt, at least one of lithium bis(pentafluoroethane sulfonyl)imide and lithium bis(trifluoromethane sulfonyl)imide at 0.1 M or more and 0.5 M or less. The nonaqueous electrolyte contains 1,3-dioxane.
Owner:PANASONIC ENERGY CO LTD
Working medium for heat pump, and heat pump system
ActiveUS20150337191A1Less influenceImprove flame retardant performanceHeat-exchange elementsCompression machines with reversible cycle1,3,3,3-TetrafluoropropeneWorking temperature
To provide a working medium for a heat pump which has less influence over global warming, which has favorable flame retardancy as compared with a working medium consisting solely of 1,1,2-trifluoroethylene, and with which a heat pump system stably exhibiting heat pump performance even at a higher working temperature can be obtained.A working medium for a heat pump, which comprises 1,1,2-trifluoroethylene, at least one member selected from the group consisting of 1,1,1,2-tetrafluoroethane and pentafluoroethane, and at least one member selected from the group consisting of 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropene.
Owner:ASAHI GLASS CO LTD
Refrigerant mixtures comprising tetrafluoropropene, difluoromethane, pentafluoroethane, and tetrafluoroethane, and uses thereof
ActiveUS20140331697A1High GWPsSuitable propertyCompression machines with non-reversible cycleEvaporators/condensersR-407AHFO-1234yf
A non-flammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture may include from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125, (d) from 25.5 weight percent to 30 weight percent HFC-134a, and optionally (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g., lubricants), in processes to produce cooling, in methods for replacing refrigerants R-404A, R-507, R-407A, R-407C, R-407F and / or R-22, and in refrigeration apparatuses.
Owner:THE CHEMOURS CO FC LLC
Refrigerant composition
Owner:THE CHEMOURS CO FC LLC +1
Binary refrigerating apparatus
InactiveUS20160018135A1Low GWP valueIncrease volumeCompression machines with cascade operationHeat-exchange elementsZeotropic mixtureEngineering
A binary refrigerating apparatus employs a refrigerant composition that has a small global-warming potential (GWP) to be earth friendly, can be used as a refrigerant capable of achieving a low temperature of −80° C., and is excellent in refrigerating capacity and other performance. A refrigerant composition used as a low-temperature-side refrigerant is a refrigerant mixture including a non-azeotropic mixture in which 20% by mass or less of carbon dioxide (R744) is mixed to difluoroethylene (R1132a). A refrigerant composition used as a high-temperature-side refrigerant is a combination of: a non-azeotropic mixture comprising the refrigerant group of difluoromethane (R32), pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a) and 1,1,3-trifluoro ethane (R143a); and 1,1,1,2,3-pentafluoropentene (HFO-1234ze), having a global-warming potential (GWP) of 1500 or less.
Owner:PANASONIC HEALTHCARE HLDG CO LTD
Method of preparing pentafluoroethane, catalysts for fluorination and a preparation method thereof
InactiveUS6503865B1Reduce yieldHigh purityOrganic chemistry methodsPreparation by halogen replacementChromium CompoundsIndium
A method of preparing pentafluoroethane wherein chlorine-containing carbon compounds are fluorinated in the presence of chromium catalysts that are in an amorphous state and wherein the main component is chromium compounds with the addition of at least one metal element selected from the group composed of indium, gallium, cobalt, nickel, zinc and aluminum and the average valence of the chromium in said chromium compounds is not less than +3.5 but not more than +5.0. And said chromium catalysts and a preparation method thereof.A method of preparing pentafluoroethane wherein the total yield of chlorofluoroethane by-products can be decreased without significantly deteriorating the generation activity of the pentafluoroethane and compounds which can be recycled in the reaction system. And to provide catalysts for this fluorination and a preparation method thereof.
Owner:DAIKIN IND LTD
Compositions comprising difluoromethane, pentafluoroethane, tetrafluoropropene, and tetrafluoroethane and uses thereof
Disclosed herein is a composition comprising (a) from 1 to 29 weight percent difluoromethane; (b) from 1 to 19 weight percent pentafluoroethane; (c) from 9 to 42 weight percent 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane, or a mixture thereof; and (d) from 34 to 68 weight percent 2,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene or mixture thereof; wherein when the composition contains 2,3,3,3-tetrafluoropropene, the composition also contains at least some 1,1,2,2-tetrafluoroethane; wherein the ratio of component (a) to component (b) is at most 1.5:1; and wherein the ratio of component (c) to component (d) is at least 0.04:1. The compositions are useful in methods for producing cooling and heating, methods for producing air conditioning, methods for replacing HCFC-22, R-410A, R-407C, HFC-134a, CFC-12, HCFC-22 and HCFC-124 and in heat transfer systems including heat pumps and air conditioners.
Owner:THE CHEMOURS CO FC LLC
Refrigerant capable of being directly filled for replacing R22
InactiveCN102153992ALow GWP valueMeet the protection requirementsHeat-exchange elementsEngineeringDimethyl ether
The invention provides a refrigerant composition capable of being directly filled for replacing R22 in systems such as a household air conditioner / heat pump and the like. The refrigerant comprises pentafluoroethane (R125), 1,1,1,2- tetrafluoroethane (R134a) and dimethyl ether (DME or RE170); and the preparation method of the refrigerant comprises the following step of physically mixing all the components under a liquid phase in the corresponding proportions. The refrigerant completely meets the requirement of environment protection and has the ODP (Ozone Destruction Potential) value of zero and low GWP (Global Warming Potential) value; the thermodynamic engineering performance and the parameters of the refrigerant are very close to R22; the pressure and the exhausting temperature of a compressor are lower than those of R22; any parts and the lubricating oil of the traditional R22 system do not need to be changed or replaced when R22 is replaced with the refrigerant; the refrigerant can be filled directly and has good cycle performance same as or slightly higher than R22.
Owner:于淑芳
Refrigerant compositions
Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from −50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.
Owner:EI DU PONT DE NEMOURS & CO
Non-combustible mixing refrigerant suitable for deep refrigeration temperature of minus 80 DEG C to minus 100 DEG C
ActiveCN102559146ANo destructive effectNon-flammableHeat-exchange elementsHexafluoroethanePolymer science
The invention relates to a non-combustible mixing refrigerant suitable for deep refrigeration temperature of minus 80 DEG C to minus 100 DEG C. The non-combustible mixing refrigerant comprises five groups of materials, where the first group of material is tetrafluoromethane; the second group of material is trifluoromethane, hexafluoroethane or a mixture of the trifluoromethane and the hexafluoroethane; the third group of material is pentafluoroethane, trifluoroethane, perfluoropropane, difluoromethane or a mixture of two, three or multiple of the pentafluoroethane, the trifluoroethane, the perfluoropropane and the difluoromethane; the fourth group of material is iodotrifluoromethane, 1, 1, 2, 2-tetrafluoroethane, 1,1-difluoroethane, 2, 3, 3, 3-tetrafluoropropene, 1, 3, 3, 3-tetrafluoropropene or a mixture of two, three or multiple of the iodotrifluoromethane, the 1, 1, 2, 2-tetrafluoroethane, the 1,1-difluoroethane, the 2, 3, 3, 3-tetrafluoropropene and the 1, 3, 3, 3-tetrafluoropropene; the fifth group of material is perfluoro-n-butane, 1, 1, 1, 3, 3-perfluoropropane or a mixture of the perfluoro-n-butane and the 1, 1, 1, 3, 3-perfluoropropane; the molar concentrations of the five groups of materials are respectively 25-50%, 15-40%, 10-30%, 5-20% and 10-25%; and the non-combustible mixing refrigerant is safe in a back-heating type throttling refrigeration system, can realize the refrigeration in the temperature range of minus 80 DEG C to minus 100 DEG C and has low whole green house effect without ozone depletion effect.
Owner:中科赛凌(北京)科技有限公司
Refrigerant mixtures comprising tetrafluoropropenes, difluoromethane, pentaflouroethane, and tetrafluoroethane and uses thereof
InactiveUS20150152305A1Low toxicitySuitable propertyDomestic cooling apparatusHeat-exchange elementsRefrigerationOrganic chemistry
Compositions are disclosed which contain a refrigerant component consisting essentially of at least one refrigerant having an OEL less than 400; and a combination of refrigerants, each having an OEL greater than 400, consisting essentially of HFC-134a; HFC-32; trans-HFO-1234ze; and optionally at least one refrigerant selected from the group consisting of HFC-134 and HFC-125; provided that HFC-134a is not greater than 26 weight percent of the refrigerant component and the total of HFC-134a and HFC-134 is not less than 20 weight percent of the refrigerant component; and optionally a non-refrigerant component; wherein the refrigerant component has an overall OEL of at least 400 and wherein components the refrigerant component is non-flammable. These compositions are useful in processes to produce refrigeration, in methods for replacing refrigerant R-404A or R-507A, and in refrigeration apparatus.
Owner:THE CHEMOURS CO FC LLC
Environmentally friendly mixed refrigerant
ActiveCN107987798AImprove thermal performancePromote environmental protectionHeat-exchange elementsIodotrifluoromethaneHexafluoropropylene
The invention provides a novel environmentally friendly mixed refrigerant, 1,1,2-trifluoroethylene and the substances like 1,1-difluoroethylene, 1,1,2,3,3,3-hexafluoropropylene and 1,1-difluoromethaneare added in trifluoropropene or tetrafluoropropene, so that the direct filling performance of the mixed refrigerant in an air conditioner system is improved. In addition, the invention further provides the novel environmentally friendly mixed refrigerant, nonflammable halogenated substances with more iodine or fluorine atoms like 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane, 1,1,1,2,2-pentafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane and iodotrifluoromethane are added in to the mixture, so that the flammability of the refrigerant is reduced.
Owner:XIAN MODERN CHEM RES INST
Process for purifying pentafluoroethane, process for producing the same, and use thereof
InactiveUS20050124834A1Reduce contentPreparation by halogen halide additionPreparation by halogen replacementSilicon dioxideOrganic chemistry
A process comprising bringing crude pentafluoroethane containing at least one compound selected from the group consisting of hydrofluorocarbons containing one carbon atom, hydrochlorofluorocarbons containing one carbon atom and hydrochlorocarbons containing one carbon atom, into contact with an adsorbent comprising a zeolite having an average pore size of 3 to 6 Å and a silica / aluminum ratio of 2.0 or less and / or a carbonaceous adsorbent having an average pore size of 3.5 to 6 Å, to reduce the content of the compound. The purified gas can be used as a low temperature refrigerant or an etching gas.
Owner:SHOWA DENKO KK
R502, r12 or r22 substitute mixed refrigerant and refrigeration system using thereof
InactiveCN101006154AAvoid destructionLow application costOrganic chemistryCompression machines with non-reversible cycleEngineeringRefrigeration
The present invention relates to a refrigerant mixture for substituting R502, R22 or R12 used in a vapor compression refrigerator or air conditioner and a refrigeration system using the same. More specifically, the present invention relates to a refrigerant mixture comprising a combination of two or three components, which is capable of being used without causing ozone layer destruction and global warming and at the same time, without replacement of the existing refrigeration system, wherein the components are selected from the group consisting of propylene, propane, 1,1,1,2-tetrafluoroethane, pentafluoroe thane, 1,1,1-trifluoroethane, 1,1-difluoroethane, dimethylether and isobutane; and a refrigeration system using the same.
Owner:咸允植 +1
Refrigeration compressor lubricant
ActiveUS20130200295A1Good compatibilityExcellent indexHeat-exchange elementsAdditivesRefrigeration compressorDichlorodifluoromethane
Owner:COPELAND LP
Ternary heat-transfer fluids comprising difluoromethane, pentafluoroethane and tetrafluoropropene
InactiveUS9057010B2Reduce the impact of heatLow GWPHeat-exchange elementsRefrigeration components1,3,3,3-TetrafluoropropeneHeat transfer fluid
The invention relates to a ternary composition comprising: from 5 to 50% of difluoromethane;—from 2 to 20% of pentafluoroethane; and—from 30 to 90% of tetrafluoropropeae. The tetrafluoropropeae may be 1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene. This composition can be used as a heat-transfer fluid in vapor compression circuit.
Owner:ARKEMA FRANCE SA
Method of charging and recharging a refrigeration system containing a ternary refrigerant
InactiveUS6035648AEasy to replaceSafe and economical mannerCompression machines with non-reversible cycleHeat-exchange elementsEngineeringRefrigeration
A method of charging and recharging a refrigerant loop with a ternary refirgerant composition, wherein substantially equal proportions of difluoromethane and pentafluoroethane are added to the loop in substantially equal proportion by mass, during the step of charging and recharging.
Owner:YORK INT
Process for producing 1,1,1,2,2-pentafluoroethane
InactiveUS6392106B1Reduce productionReduce the amount requiredPreparation by halogen halide additionPreparation by halogen replacementHydrogen fluoride1,1,1,2-Tetrafluoroethane
Owner:DAIKIN IND LTD
Device and method for purifying trifluoromethane
ActiveCN103951543AHigh purityMeet the requirementsHalogenated hydrocarbon separation/purificationPurification methodsCryo-adsorption
The invention discloses a device and a method for purifying trifluoromethane. The device comprises a rectification device and an adsorption device connected with the rectification device, wherein the rectification device comprises a first-stage rectification device, a second-stage rectification device and a third-stage rectification device which are connected in sequence; the adsorption device comprises a low-temperature adsorption device and a filling device which are connected in sequence; the low-temperature adsorption device of the adsorption device is connected with the rectification device. Compared with the prior art, the purity of trifluoromethane purified by adopting the device is relatively high, the device is easy to operate, and a purification process is complete, reliable and good in repeatability. The removal of conventional impurities is considered, difficultly removed carbon dioxide, monochlorodifluoromethane, pentafluoroethane, water and particles are removed to be in a qualified range, and the product purity is 99.999% and meets the use requirements of the semiconductor industry.
Owner:FOSHAN HUATE GASES
Refrigerant mixtures comprising difluoromethane, pentafluoroethane, and tetrafluoropropene and uses thereof
In accordance with the present invention refrigerant compositions are disclosed. The refrigerant compositions contain comprise 11-28 weight percent difluoromethane; 34-59 weight percent pentafluoroethane; and 21-38 weight percent 2,3,3,3-tetrafluoropropene. The refrigerant compositions are useful in processes to produce cooling, in methods for replacing refrigerant R-404A or R-507A, and in refrigeration systems. These inventive refrigerant compositions can be used in stationary and mobile refrigeration equipment, and are particularly useful for transport refrigeration units.
Owner:THE CHEMOURS CO FC LLC
Hydrofluorocarbon refrigerant compositions for heat pump water heaters
ActiveUS20120096877A1Maintain good propertiesReliable and efficient wayHeat pumpsCompression machines with non-reversible cycleEngineeringHydrofluorocarbon
Hydrofluorocarbon refrigerant compositions enable the use of existing compressor technologies in heat pump water heaters in a reliable (low discharge temperatures and pressures) and efficient (high capacity and efficiency) manner. The refrigerant comprises blends of pentafluoroethane (HFC-125), difluoromethane (HFC-32), tetrafluoroethane (HFC-134a) and tetrafluoropropene (HFO-1234ze).
Owner:HONEYWELL INT INC
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