# US 11,111,424 B2 · Heat transfer compositions, methods, and systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,111,424 B2 - Document ID: US11111424B2 - Status: Granted - Kind: B2 - Application number: 16/194,330 - Filed: 2018-11-17 - Published: 2019-05-30 - Granted: 2021-09-07 - Earliest claimed: 2017-11-17 - Assignees: Honeywell International Inc. - Applicants: Honeywell International Inc. - Inventors: Samuel F. Yana Motta; Michael Petersen; Ankit Sethi; Elizabet del Carmen Vera Becerra; Yang Zou; Gregory Smith - Web page: https://patentgrep.com/patent/US11111424B2 ## CPC - C09K 5/044: {comprising halogenated compounds} - C09K 5/045: {containing only fluorine as halogen} - C10M 107/32: Condensation polymers of aldehydes or ketones; Polyesters; Polyethers - C10M 171/008: {Lubricant compositions compatible with refrigerants} - F25B 9/006: {the refrigerant containing more than one component (F25B9/004 takes precedence)} - C09K 2205/106: Carbon dioxide - C09K 2205/122: Halogenated hydrocarbons - C09K 2205/126: Unsaturated fluorinated hydrocarbons - C09K 2205/40: Replacement mixtures - C10M 2203/065: used as base material - C10M 2205/0265: used as base material - C10M 2205/0285: used as base material - C10M 2205/063: used as base material - C10M 2207/2835: used as base material - C10M 2209/1023: used as base material - C10N 2020/097: {Refrigerants} - C10N 2020/101: {Containing Hydrofluorocarbons} - C10N 2020/106: {Containing Carbon dioxide} - C10N 2040/30: Refrigerators lubricants {or compressors lubricants} - F25B 9/008: {the refrigerant being carbon dioxide} - F25B 31/008: {by injecting a liquid} - F25B 40/00: Subcoolers, desuperheaters or superheaters - F25B 2400/121: using R1234 - F25B 2400/13: Economisers - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33) - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS ## Abstract A refrigerant composition, including trifluoroiodomethane (CF3I); 1,1,1,2-tetrafluoropropene (HFO-1234yf); difluoromethane (HFC-32); and carbon dioxide (CO2), for use in a heat exchange system, including refrigeration applications and in particular aspects to the use of such compositions as a replacement of the refrigerant R-404A for heating and cooling applications and to retrofitting heat exchange systems, including systems designed for use with R-404A. ## Claims ### Claim 1 A refrigerant comprising at least about 97% by weight of the following four compounds, with each compound being present in the following relative percentages: about 41 to about 49% by weight trifluoroiodomethane (CF3I); about 36 to about 44% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); about 12 to about 15% by weight difluoromethane (HFC-32); and 1 to 3.5±0.2% by weight carbon dioxide (CO2). ### Claim 2 (depends on 1) The refrigerant of claim 1 comprising at least about 98.5% by weight of the following four compounds in the relative amounts set forth below: about 43 to about 47% by weight trifluoroiodomethane (CF3I); about 38 to about 42% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); about 12 to about 15% by weight difluoromethane (HFC-32); and 1 to 3.5±0.2% by weight carbon dioxide (CO2). ### Claim 3 (depends on 1) The refrigerant of claim 1 consisting essentially of the following four compounds in the relative amounts set forth below: 43 to 47% by weight trifluoroiodomethane (CF3I); 38 to 42% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); 12 to 15% by weight difluoromethane (HFC-32); and 1 to 3.5±0.2% by weight carbon dioxide (CO2). ### Claim 4 (depends on 1) The refrigerant of claim 1 consisting of the following four compounds in the relative amounts set forth below: 43 to 47% by weight trifluoroiodomethane (CF3I); 38 to 42% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); 12 to 15% by weight difluoromethane (HFC-32); and 1 to 3.5±0.2% by weight carbon dioxide (CO2). ### Claim 5 (depends on 1) The refrigerant of claim 1 comprising at least about 97% by weight of the following four compounds in the relative amounts set forth below: 45±1% by weight trifluoroiodomethane (CF3I); 40±1% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); 13±1 by weight difluoromethane (HFC-32); and 2%±0.5 by weight carbon dioxide (CO2). ### Claim 6 (depends on 5) The refrigerant of claim 5 comprising at least about 98.5% by weight of the following four compounds in the relative amounts set forth below: 45±1% by weight trifluoroiodomethane (CF3I); 40±1% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); 13±1% by weight difluoromethane (HFC-32); and 2±0.5% by weight carbon dioxide (CO2), wherein said refrigerant is nonflammable as determined in accordance with the Non-Flammability Test and wherein said refrigerant has a GWP of less than 100. ### Claim 7 (depends on 4) The refrigerant of claim 4 wherein said refrigerant is nonflammable as determined in accordance with the Non-Flammability Test and wherein said refrigerant has a GWP of less than 100. ### Claim 8 (depends on 1) The refrigerant of claim 1 consisting essentially of the following four compounds in the relative amounts set forth below: 45±1% by weight trifluoroiodomethane (CF3I); 40±1% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); 13±1% by weight difluoromethane (HFC-32); and 2±0.5% by weight carbon dioxide (CO2). ### Claim 9 (depends on 1) The refrigerant of claim 1 consisting of the following four compounds in the relative amounts set forth below: 45±1% by weight trifluoroiodomethane (CF3I); 40±1% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); 13±1% by weight difluoromethane (HFC-32); and 2±0.5% by weight carbon dioxide (CO2). ### Claim 10 (depends on 7) A heat transfer composition comprising a refrigerant of claim 7. ### Claim 11 (depends on 10) The heat transfer composition of claim 10 further comprising a stabilizer comprising an alkylated naphthalene and/or a diene based compound and/or isobutylene. ### Claim 12 (depends on 11) The heat transfer composition of claim 11 further comprising a lubricant selected from the group consisting of polyol esters (POEs), polyalkylene glycols (PAGs), PAG oils, silicone oils, mineral oil, alkylbenzenes (ABs), polyvinyl ethers (PVE) and poly(alpha-olefin) (PAO). ### Claim 13 (depends on 12) The heat transfer composition of claim 12 wherein the lubricant is a polyolester (POE). ### Claim 14 (depends on 1) A heat transfer composition comprising the refrigerant of claim 1, an alkylated naphthalene stabilizer and a lubricant. ### Claim 15 (depends on 14) The heat transfer composition of claim 14 wherein said alkylated naphthalene comprises AN10 and wherein said lubricant is selected from the group consisting of polyol esters (POEs), polyalkylene glycols (PAGs), PAG oils, silicone oils, mineral oil, alkylbenzenes (ABs), polyvinyl ethers (PVE) and poly(alpha-olefin) (PAO). ### Claim 16 (depends on 15) The heat transfer composition of claim 15 further comprising a limonene. ### Claim 17 A heat transfer system comprising: a compressor, a condenser, an evaporator, a sequestration material, and a heat transfer composition, wherein: (a) said heat transfer composition comprises a POE lubricant and a refrigerant comprising at least about 97% by weight of the following four compounds, with each compound being present in the following relative percentages: about 43 to about 47% by weight trifluoroiodomethane (CF3I); about 38 to about 42% by weight 1,1,1,2-tetrafluoropropene (HFO-1234yf); about 12 to about 15% by weight difluoromethane (HFC-32); and 1 to 3.5±0.2% by weight carbon dioxide (CO2); and (b) said sequestration material is comprises: i. activated alumina, or ii. a zeolite molecular sieve comprising copper, silver, lead or a combination thereof, or iii. an anion exchange resin, or iv. a moisture-removing material, or v. a combination of two or more of the above. ### Claim 18 (depends on 17) The heat transfer system of claim 17 further comprising an oil separator located downstream of the compressor and wherein said sequestration material is located inside the oil separator such that said POE lubricant contacts the sequestration material(s) during operation of said system. ### Claim 19 (depends on 18) A chiller comprising the heat transfer system of claim 18. ### Claim 20 (depends on 18) A commercial refrigeration system comprising the heat transfer system of claim 18.