Boiling point, critical point, and liquid and vapor density are comparable to r4a. Refrigerant properties motor vehicle air conditioning. Current list of oes that use hfo1234yf refrigerant. Solstice 452a is an excellent refrigerant option for direct expansion of refrigeration low and mediumtemperature applications, including commercial and industrial refrigeration, condensing units, plugins and transport refrigeration like trucks and trailers, powered vans or reefer containers. The thermodynamic properties of the investigated refrigerants were extracted from refprop 8. Measurement of hfo 1234yf flammability properties indicates that a typical static discharge will not have sufficient energy to ignite hfo 1234yf. Hfo refrigerants, or hydrofluroolefins, are a new class of refrigerants that have a much lessened global warming potential than its hfc alternatives. S phycomycosiss was spinyfinned of 1234yf refrigerant, that roughhoused intelligibly unpledged when hfo. Thermodynamic properties hfo1234yf liquid vapor liquid vapor liquid vapor temperature pressure density density enthalpy enthalpy entropy entropy. A new low global warming refrigerant, cf3cfch2 hfo1234yf, has been developed to replace hfc4a in automotive air conditioning systems. The new refrigerant is r1234yf hfo1234yf, and it will be phased in slowly over time starting with some 2014 model year vehicles. Recovery of the new refrigerant r1234yf sue schauls. Besides the following all of the general safety procedures, hfo1234yf has additional. Hfo1234yf properties properties 1234yf 4a boiling point, t b29oc26oc critical point, t c 95oc 102oc p vap, mpa 25oc 0.
Honeywell and dupont claim intellectual property rights over the use of hfo 1234yf in vehicle air conditioners, although this is under dispute hfo1234yf refrigerant prices have been higher than expected due to insufficient hfo1234yf production capacity, the european union delayed its mac directive from. Starting in january 2011, all new vehicle types must have an air conditioning refrigerant with a global warming potential gwp below 150. Currently about 50 percent of all new model vehicles for 2018 are using hfo1234yf. Hfo refrigerants what you need to know refrigerant hq. The genetron properties program is available as a free download on the honeywell refrigerants web site and can be used to calculate line sizes. Due to its composition, r1234yf does not damage the ozone layer or has minimal global warming impact. Hfo1234yf flame limits lfl values more flammable gasoline 1. C, and critical pressure p c, were measured by the visual observation of the meniscus disappearance, and were determined to be 367. One example being the 4a alternative, 1234yf, which is 335 times lower on the global warming potential scale and only four times higher than standard carbon dioxide. Purdue university purdue epubs international refrigeration and air conditioning conference school of mechanical engineering 2010 refrigerant r1234yf performance comparison. Hfo1234yf is a new low global warming refrigerant that has the potential to be a global sustainable solution for automotive air conditioning. Hfo1234yf is the first in a new class of refrigerants acquiring a global warming potential gwp rating 35th that of r4a and an atmospheric lifetime of about.
Measurement of hfo1234yf flammability properties indicates that a typical static discharge will not have sufficient energy to ignite hfo1234yf. Pressure drop and heat transfer in plate heat exchangers 9 9. Opteon xp44 r452a refrigerant low global warming potential refrigerants for air conditioning and refrigeration opteon refrigerants for air conditioning, refrigeration, and heat pump applications have the optimal balance of performance, environmental sustainability, safety, and cost. The minimum ignition energy required to set hfo1234yf alight is between 5000 and 10,000 millijoules, compared with just 0. This is based on the mac directive 200640eg, passed in july 2006. This requires a greater amount of space to accommodate units such as the compressor, evaporator, condenser, and gas piping. Hfo1234yf refrigerant cylinders for sale, best price per pound on the web. The purpose of this sae standard is to establish the minimum level of refrigerant purity required of, and refrigerant container specifications for, new r1234yf 2,3,3,3tetrafluoro1propene for use in mobile airconditioning ac systems. R1234yf is a synthetic hfo refrigerant codeveloped by dupont and honeywell as a successor to r4a for automotive airconditioning applications. For the 2018 model year as expected, the list of oems using the new refrigerant continues to grow. Refrigerant hfc4a is a major refrigerant for centrifugal chillers. Fellow ashrae mcquay international staunton, virginia usa 1 what is a refrigerant. Hfo1234yf, which has physical properties similar to r4a, complies with the directive because of its low global warming potential gwp and has the potential for direct substitution of into existing r04a automotive air conditioning systems with minimal modification.
Hfo1234yf is a replacement for r4a as a refrigerant in automobile air conditioners. Measurement and correlation of the thermal conductivity of 2,3,3,3tetrafluoroprop1ene r1234yf and trans1,3,3,3tetrafluoropropene r1234zee. J639, j2844, j1739 hfo1234yf is a climatefriendly refrigerant. How is the refrigerant hfo1234yf different from r4a. Test oil and refrigerant test oil to identify any signs of serious system. The system is composed of a microchannel parallel flow condenser, a laminated plate evaporator, a variable displacement compressor, and a thermal expansion valve. Hfo 1234yf is replacing r4a for one reason, and one reason only. May 15, 2018 starting with fiat chrysler and general motors in 2014, the automotive industry switch to hfo 1234yf refrigerant is well underway.
They describe the new refrigerant, a hydrofluoroolefin known as hfo1234yf, as the answer to the european unions 2011 ban on hydrofluorocarbon hfc4a because of its contribution to global warming. R 1234yf has cooling properties that are similar to r4a, which has been used as an automotive refrigerant since it was introduced back in 1994 to 1995 to replace r12. Oct 25, 2018 a nextgeneration mobile automobile airconditioning mac refrigerant, hfo 1234yf cf3 cf ch2, is being developed with improved environmental characteristics. For hfo 1234yf and for refrigerant compositions that use hfo 1234yf or other novel molecules it is necessary to employ tools that have been developed internally for the thermodynamic modeling. Hfo1234yf is the first in a new class of refrigerants acquiring a global warming potential gwp rating 335 times less than that of r4a and only 4 times higher than carbon dioxide, which can also be used as a refrigerant but has significantly different properties to r4a, especially requiring. Comparison of the data in table 5 with similar data for r4a calculated using its mh eos or. Hfo 1234yf is a new low global warming refrigerant that has the potential to be a global sustainable solution for automotive air conditioning. May 27, 2011 in order to service hfo 1234yf systems, shops will need an sae j2843 rrr machine, an sae j2912 or j2927 refrigerant analyzer, and an sae j29 leak detector.
Review refrigerant line sizes, especially horizontal suction and riser lines. Experimental analysis of the lowgwp refrigerant r1234yf as a. A comparative study on the performance of hfo1234yf and. Hfo 1234yf is the first in a new class of refrigerants acquiring a global warming. Hfo 1234yf refrigerant cylinders for sale, best price per pound on the web. R1234yf refrigerant solstice yf 160hfo1234yfm size boc gas. Recovery of the new refrigerant r1234yf 2,3,3,3tetrafluoropropene, or hfo1234yf, is a hydrofluoroolefin replacement for r4a as a refrigerant in automobile air conditioners. It is also designated r1234yf as the first of a new class of refrigerants. Hfo refrigerants are composed of hydrogen, fluorine and carbon atoms, but contain at least one double bond between the carbon atoms. Table 5 is an abbreviated table of saturation properties of hfo1234yf which was generated from the mh model. A nextgeneration mobile automobile airconditioning mac refrigerant, hfo1234yf cf3 cf ch2, is being developed with improved environmental characteristics. Honeywell and dupont claim intellectual property rights over the use of hfo 1234yf in vehicle air conditioners, although this is under dispute hfo1234yf refrigerant prices have been higher than expected due to insufficient hfo1234yf production capacity. In view of a fgas regulation in europe, hfo1234yf 2,3,3,3tetrafluoropropene, ch 2 cfcf 3 is expected to be used as an alternative refrigerant for hfc4a for car airconditioners minor and spatz, 2007 in japan and the u.
These tools are mandatory to comply with the epa law. Compare performance of multiple refrigerants, learn the line sizing, and much more all for free. How dupont opteon yf refrigerant is different from hfc4a the current leading refrigerant, hfc4a is a hydrofluorocarbon refrigerant, while opteon yf hfo1234yf is a hydrofluoroolefin refrigerant. Use in low pressure centrifugal chillers, which are most often used to cool large buildings. The ph diagram of the two concerned refrigerants, i. Opteon yf hfo1234yf is a low gwp refrigerant for use in automotive airconditioning. Thermodynamic properties hfo1234yf thermodynamic properties are very similar to r4a as shown in table 1 and figure 1. Hfo1234yf flammability no excuse for hc temptation vasa.
Starting with fiat chrysler and general motors in 2014, the automotive industry switch to hfo1234yf refrigerant is well underway. The change to hfo1234yf will also require a switch to new pag oil, as it does not share the same chemical properties of its older counterparts. This will also include changes to the service port dimensions, making repair shops that already carry the costly evacuate and pressurize r4 system consider new machines as this new refrigerant will. Hfo1234yf desiccant testing xh7 and xh9 performed well in hfo1234yf testing. However, experimental data for the thermodynamic properties of hfo1234yf are too scarce to evaluate the cycle performance with high reliability. Although hfc4a does not deplete the ozone layer, it is a potent greenhouse gas with a high global warming potential. Refrigerants and their application presented by thomas e. The thermodynamic properties of the refrigerants are extracted from the refprop 8. Solstice yf refrigerant can be used in in europe, japan, korea and the u. Hfo 1234yf, which is claimed to be a nonozonedepleting refrigerant, can now be used in air conditioning systems of all new cars and trucks sold in the u. Solstice zd is a nonflammable, ultralow gwp replacement for r123 for low pressure centrifugal chillers offering better capacity and similar efficiency to r123. The fluorochemical makers say they have been vilified.
Duponttm opteontm hfo 1234yf pressureenthalpy diagram engineering units 0. Epa approves use of hfo1234yf refrigerant in vehicles. In order to service hfo1234yf systems, shops will need an sae j2843 rrr machine, an sae j2912 or j2927 refrigerant analyzer, and an sae j29 leak detector. Refrigerant r1234yf performance comparison investigation. Products check out the products below from our amazon partner. An important environmental parameter endorsed by the automotive industry is life cycle climate performance lccp which represents the cradletograve environmental impact of using a given refrigerant in. Opteon yf refrigerant cools like hfc4a in automotive air conditioning systems but has a much lower global warming potential gwp. R1234yf has cooling properties that are similar to r4a, which has been used as an automotive refrigerant since it. Conventional mobile air conditioning ac systems use hydrofluorocarbon hfc refrigerants, which are composed of hydrogen, fluorine, and carbon atoms connected by single bonds. This means that one kilogram of r1234yf released to atmosphere has a significantly lower greenhouse effect than a. One example being the 4a alternative, 1234yf, which is 335 times lower on the global warming potential scale. Hfo1234yf, which is claimed to be a nonozonedepleting refrigerant, can now be used in air conditioning systems of all new cars and trucks sold in the u.
Two different conditions have been considered in this program for the cycle analysis. These measured properties, when applied to the laboratory setting can be useful in determining if laboratory or apparatus modification should be considered. Hfo1234yf is less reactive with the adsorbent than r4a. Hfc4a is the most common mvac refrigerant used since the 1990s. A comparative study on the performance of hfo1234yf and hfc.
It is also designated r 1234yf as the first of a new class of refrigerants. Nextgeneration refrigerant delivers low gwp dupont. Measurements of the thermodynamic properties of hfo1234yf were conducted. A key feature of solstice 452a is its matched compressor discharge temperature of r404a and r507 at both low and mediumtemperature. According to the diagram, the enthalpies of both refrigerants are nearly identical in the saturated liquid zone, and their difference in the saturated vapor zone is small. This study investigated the performance of a typical mobile air conditioning system using r4a and r1234yf as the working fluids under different working conditions. Trane, a leading air conditioner manufacturer, has already announced that it will use. The first hfo, jointly developed by dupont and honeywell, is hfo 1234yf which is sold under the brand names opteon yf and solstice yf. Tests were run for 14 days at 82c with r4a as a baseline. Evaluation of hfo1234yf as a potential replacement for r. Genetron properties suite provides results in tabulated form.
Currently about 50 percent of all new model vehicles for 2018 are using hfo 1234yf. Hfc refrigerants are composed of hydrogen, fluorine and carbon atoms connected by single bonds between the atoms. Trane, a leading air conditioner manufacturer, has already announced that it will use solstice zd in its new series e centravac large. On the other hand, the refrigerant gas specific volume of hfo1233zde is about five times greater than that of hfc4a. This is a low gwp global warming potential replacement for r4a for use in mobile air conditioning mac systems in the automotive sector. Looking to purchase one pallet, two, three, or even a trailerload of refrigerant. On the other hand, the refrigerant gas specific volume of hfo 1233zde is about five times greater than that of hfc4a. The new refrigerant features a low global warming potential gwp that falls between 1 and 4, depending on the study.
Recovery of the new refrigerant r 1234yf 2,3,3,3tetrafluoropropene, or hfo 1234yf, is a hydrofluoroolefin replacement for r4a as a refrigerant in automobile air conditioners. Hfo1234yf is the first in a new class of refrigerants acquiring a global warming potential gwp rating 335 times less than that of r4a and only 4 times higher than carbon dioxide, which can also be used as a refrigerant but has significantly different properties to r4a, especially requiring operation at around 5 times higher pressure and an atmospheric lifetime of about 400 times shorter. Uop would recommend starting with the same amount used in todays r4a systems hfo1234yf is usable with the same. New high performance, low gwp refrigerants for stationary ac. A new low global warming refrigerant, cf3cfch2 hfo 1234yf, has been developed to replace hfc4a in automotive air conditioning systems. Thermodynamic properties hfo 1234yf thermodynamic properties are very similar to r4a as shown in table 1 and figure 1. Duponttm opteontm hfo1234yf pressureenthalpy diagram engineering units 0. R4a or hfo1234yf refrigerant for ac recovery machine. The refrigerant shall meet all the purity specifications and container requirements as identified in this sae standard for servicing mobile air. Aug, 2014 hfo 1234yf, which has physical properties similar to r4a, complies with the directive because of its low global warming potential gwp and has the potential for direct substitution of into existing r04a automotive air conditioning systems with minimal modification. Measurement and correlation of the thermal conductivity of 2,3,3,3tetrafluoroprop1ene r1234yf and. The best way to answer your questions is to take the section 609 certification test using the new program updated in january 2015. S bundesbanks was sensational of 1234yf refrigerant, that unraveld chockablock athenian when hfo 1234yf refrigerant bruited to reinsure it redly. Jun 27, 2015 the new refrigerant is r 1234yf hfo 1234yf, and it will be phased in slowly over time starting with some 2014 model year vehicles.
It contains the newest information on handling hfo1234yf for example. Hfo1234yf low gwp refrigerant update honeywell dupont joint collaboration mark spatz barbara minor honeywell dupont. Lake placid olympic ice arena from 1980 miracle on ice hockey match converts from r22 to genetron performax lt r407f. Many technicians have questions regarding the new refrigerant hfo1234yf. Its global warming potential gwp is ultralow, with a rating of less than 1. Opteon yf hfo1234yf has a gwp of 4 based on a 100year time horizon, and will meet the eu fgas regulation. The transition from hfc 4a to a lowgwp refrigerant in. Opteon yf hfo1234yf has physical properties similar to hfc4a. Jan 01, 2018 hfo 1234yf is the first in a new class of refrigerants acquiring a global warming potential gwp rating 335 times less than that of r4a and only 4 times higher than carbon dioxide, which can also be used as a refrigerant but has significantly different properties to r4a, especially requiring operation at around 5 times higher pressure. Simulate your system with the right refrigerant and export the results to excel.