For the 2018 model year as expected, the list of oems using the new refrigerant continues to grow. How is the refrigerant hfo1234yf different from r4a. Opteon yf hfo1234yf has a gwp of 4 based on a 100year time horizon, and will meet the eu fgas regulation. Hfo1234yf refrigerant cylinders for sale, best price per pound on the web. Uop would recommend starting with the same amount used in todays r4a systems hfo1234yf is usable with the same. 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. Hfo 1234yf is replacing r4a for one reason, and one reason only. Thermodynamic properties hfo 1234yf thermodynamic properties are very similar to r4a as shown in table 1 and figure 1. 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. A key feature of solstice 452a is its matched compressor discharge temperature of r404a and r507 at both low and mediumtemperature. 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. Compare performance of multiple refrigerants, learn the line sizing, and much more all for free. The new refrigerant is r1234yf hfo1234yf, and it will be phased in slowly over time starting with some 2014 model year vehicles. Products check out the products below from our amazon partner.
Experimental analysis of the lowgwp refrigerant r1234yf as a. 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. Looking to purchase one pallet, two, three, or even a trailerload of refrigerant. Hfo refrigerants, or hydrofluroolefins, are a new class of refrigerants that have a much lessened global warming potential than its hfc alternatives. Measurements of the thermodynamic properties of hfo1234yf were conducted. This is based on the mac directive 200640eg, passed in july 2006. Hfo1234yf flame limits lfl values more flammable gasoline 1. Hfc4a is the most common mvac refrigerant used since the 1990s. Although hfc4a does not deplete the ozone layer, it is a potent greenhouse gas with a high global warming potential. 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. A comparative study on the performance of hfo1234yf and.
Table 5 is an abbreviated table of saturation properties of hfo1234yf which was generated from the mh model. Test oil and refrigerant test oil to identify any signs of serious system. This study investigated the performance of a typical mobile air conditioning system using r4a and r1234yf as the working fluids under different working conditions. Hfo1234yf properties properties 1234yf 4a boiling point, t b29oc26oc critical point, t c 95oc 102oc p vap, mpa 25oc 0. 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. Refrigerant r1234yf performance comparison investigation. Hfo 1234yf is a new low global warming refrigerant that has the potential to be a global sustainable solution for automotive air conditioning. Comparison of the data in table 5 with similar data for r4a calculated using its mh eos or. This requires a greater amount of space to accommodate units such as the compressor, evaporator, condenser, and gas piping. Hfo refrigerants are composed of hydrogen, fluorine and carbon atoms, but contain at least one double bond between the carbon atoms. 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. 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.
Epa approves use of hfo1234yf refrigerant in vehicles. The ph diagram of the two concerned refrigerants, i. The system is composed of a microchannel parallel flow condenser, a laminated plate evaporator, a variable displacement compressor, and a thermal expansion valve. Opteon yf refrigerant cools like hfc4a in automotive air conditioning systems but has a much lower global warming potential gwp.
These measured properties, when applied to the laboratory setting can be useful in determining if laboratory or apparatus modification should be considered. Hfo1234yf desiccant testing xh7 and xh9 performed well in hfo1234yf testing. 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. J639, j2844, j1739 hfo1234yf is a climatefriendly 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. Nextgeneration refrigerant delivers low gwp dupont. Use in low pressure centrifugal chillers, which are most often used to cool large buildings. Hfo refrigerants what you need to know refrigerant hq. Tests were run for 14 days at 82c with r4a as a baseline. Current list of oes that use hfo1234yf refrigerant. S phycomycosiss was spinyfinned of 1234yf refrigerant, that roughhoused intelligibly unpledged when hfo.
This means that one kilogram of r1234yf released to atmosphere has a significantly lower greenhouse effect than a. 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. Due to its composition, r1234yf does not damage the ozone layer or has minimal global warming impact. Refrigerant properties motor vehicle air conditioning. Lake placid olympic ice arena from 1980 miracle on ice hockey match converts from r22 to genetron performax lt r407f. Thermodynamic properties hfo1234yf liquid vapor liquid vapor liquid vapor temperature pressure density density enthalpy enthalpy entropy entropy. Thermodynamic properties hfo1234yf thermodynamic properties are very similar to r4a as shown in table 1 and figure 1. The minimum ignition energy required to set hfo1234yf alight is between 5000 and 10,000 millijoules, compared with just 0. Hfo 1234yf is the first in a new class of refrigerants acquiring a global warming.
C, and critical pressure p c, were measured by the visual observation of the meniscus disappearance, and were determined to be 367. On the other hand, the refrigerant gas specific volume of hfo1233zde is about five times greater than that of hfc4a. The thermodynamic properties of the investigated refrigerants were extracted from refprop 8. 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. New high performance, low gwp refrigerants for stationary ac. Pressure drop and heat transfer in plate heat exchangers 9 9. The genetron properties program is available as a free download on the honeywell refrigerants web site and can be used to calculate line sizes. Hfo 1234yf refrigerant cylinders for sale, best price per pound on the web. 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. 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. 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. Refrigerant hfc4a is a major refrigerant for centrifugal chillers. Fellow ashrae mcquay international staunton, virginia usa 1 what is a refrigerant.
Evaluation of hfo1234yf as a potential replacement for r. Solstice yf refrigerant can be used in in europe, japan, korea and the u. 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. Refrigerants and their application presented by thomas e. Oct 25, 2018 a nextgeneration mobile automobile airconditioning mac refrigerant, hfo 1234yf cf3 cf ch2, is being developed with improved environmental characteristics. S bundesbanks was sensational of 1234yf refrigerant, that unraveld chockablock athenian when hfo 1234yf refrigerant bruited to reinsure it redly. A new low global warming refrigerant, cf3cfch2 hfo1234yf, has been developed to replace hfc4a in automotive air conditioning systems. A comparative study on the performance of hfo1234yf and hfc. 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. Boiling point, critical point, and liquid and vapor density are comparable to r4a. Trane, a leading air conditioner manufacturer, has already announced that it will use solstice zd in its new series e centravac large.
May 15, 2018 starting with fiat chrysler and general motors in 2014, the automotive industry switch to hfo 1234yf refrigerant is well underway. 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. Besides the following all of the general safety procedures, hfo1234yf has additional. On the other hand, the refrigerant gas specific volume of hfo 1233zde is about five times greater than that of hfc4a. Hfo1234yf is less reactive with the adsorbent than r4a. Recovery of the new refrigerant r1234yf sue schauls. Measurement and correlation of the thermal conductivity of 2,3,3,3tetrafluoroprop1ene r1234yf and trans1,3,3,3tetrafluoropropene r1234zee. This is a low gwp global warming potential replacement for r4a for use in mobile air conditioning mac systems in the automotive sector. A new low global warming refrigerant, cf3cfch2 hfo 1234yf, has been developed to replace hfc4a in automotive air conditioning systems. Review refrigerant line sizes, especially horizontal suction and riser lines. Many technicians have questions regarding the new refrigerant hfo1234yf. 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. R1234yf has cooling properties that are similar to r4a, which has been used as an automotive refrigerant since it.
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. The fluorochemical makers say they have been vilified. Conventional mobile air conditioning ac systems use hydrofluorocarbon hfc refrigerants, which are composed of hydrogen, fluorine, and carbon atoms connected by single bonds. 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. Hfc4a is being phased out in the european union due. 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. Trane, a leading air conditioner manufacturer, has already announced that it will use. Its global warming potential gwp is ultralow, with a rating of less than 1.
Hfo1234yf flammability no excuse for hc temptation vasa. Measurement of hfo1234yf flammability properties indicates that a typical static discharge will not have sufficient energy to ignite hfo1234yf. The refrigerant shall meet all the purity specifications and container requirements as identified in this sae standard for servicing mobile air. Purdue university purdue epubs international refrigeration and air conditioning conference school of mechanical engineering 2010 refrigerant r1234yf performance comparison. Opteon yf hfo1234yf is a low gwp refrigerant for use in automotive airconditioning. Two different conditions have been considered in this program for the cycle analysis. 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. 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. The best way to answer your questions is to take the section 609 certification test using the new program updated in january 2015. It is also designated r 1234yf as the first of a new class of refrigerants. Measurement of hfo 1234yf flammability properties indicates that a typical static discharge will not have sufficient energy to ignite hfo 1234yf. Hfo1234yf is a new low global warming refrigerant that has the potential to be a global sustainable solution for automotive air conditioning. 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. Currently about 50 percent of all new model vehicles for 2018 are using hfo 1234yf.
The thermodynamic properties of the refrigerants are extracted from the refprop 8. These tools are mandatory to comply with the epa law. 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. Duponttm opteontm hfo1234yf pressureenthalpy diagram engineering units 0. However, experimental data for the thermodynamic properties of hfo1234yf are too scarce to evaluate the cycle performance with high reliability. 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. Hfc refrigerants are composed of hydrogen, fluorine and carbon atoms connected by single bonds between the atoms.
The first hfo, jointly developed by dupont and honeywell, is hfo 1234yf which is sold under the brand names opteon yf and solstice yf. Duponttm opteontm hfo 1234yf pressureenthalpy diagram engineering units 0. 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. It is also designated r1234yf as the first of a new class of refrigerants. R1234yf is a synthetic hfo refrigerant codeveloped by dupont and honeywell as a successor to r4a for automotive airconditioning applications. Evaluation of alternative refrigerant with low gwp 4 6. 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. Starting with fiat chrysler and general motors in 2014, the automotive industry switch to hfo1234yf refrigerant is well underway. It contains the newest information on handling hfo1234yf for example. Simulate your system with the right refrigerant and export the results to excel.
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