Hfc refrigerants are composed of hydrogen, fluorine and carbon atoms connected by single bonds between the atoms. Hfo1234yf refrigerant used in automotive application. Technical information at22 thermodynamic properties of dupontz freon. Thermodynamic properties hfo1234yf liquid vapor liquid vapor liquid vapor temperature pressure density density enthalpy enthalpy entropy entropy. Air conditioning systems using solstice yf refrigerant are generally more energy efficient than competing technologies. Regulations on the longterm use of refrigerants vary by. Opteon yf hfo1234yf is a low gwp refrigerant for use in automotive airconditioning. The thermodynamic properties of the investigated refrigerants.
Difficult to ignite hfo1234yf due to high minimum ignition energy. Proven r11 replacement in chiller systems worldwide. Zero ozone depletion potential odp and very low gwp. There are only two drawbacks that come to mind when dealing with 1234yf. The refrigerants should be non poisonous to humans and food stuff. Portable designed for r1234yf and r4a vehicles large lcd graphic display with soft keys quickly and accurately determines. R1234yf, or hfo1234yf is soon to be one of the most popular refrigerants in the world. Opteon yf hfo1234yf has a gwp of 4 based on a 100year time horizon, and will meet the eu fgas regulation. The decision to use the low gwp refrigerant r1234yf in mobile air conditioning systems for passenger cars low gwp hfo refrigerant r1234yf also led to the development of alternatives for further mobile applications as well as stationary refrigeration, air conditioning and heat pump systems. Snap listed hfo1234yf as acceptable subject to use conditions on march 29, 2011 76 fr 17488 pdf 34 pp, 455 k, about pdf. Modeling of state and thermodynamic cycle properties of hfo. The transition from hfc 4a to a lowgwp refrigerant in. Refrigeration n changes phase due to change in pressure n most common cryogens are n solid carbon dioxide n liquid carbon cook chill systems n used to replace warm.
Exceeds the requirements of sae j2912 refrigerant % displayed. The thermodynamic properties generated using each cubic equation is validated against data from most. Compare performance of multiple refrigerants learn the line sizing and many. Flammability is evaluated by chance of flame occurring and effect of flame occurring chance of flame occurring lower flame limit, minimum ignition energy. Due to its composition, r1234yf does not damage the ozone layer or has minimal global warming impact. Automotive service technicians depend on freon 4a r4a refrigerant, a nonozone depleting hydrofluorocarbon hfc replacement for r12. Thermodynamic properties of hydrofluoroolefin r1234yf and r1234zee refrigerant mixtures. R1234yf refrigerant rollout coming continued from page 1 special tools existing r4a equipment cannot service r1234yf due to fitting differences, refrigerant mixing and safety requirements.
Opteon xp44 r452a refrigerant is a nonozone depleting, low global warming potential gwp hydrofluoroolefin hfo based replacement for r404a and r507 refrigerants. Free shipping on many items browse your favorite brands affordable prices. Making its debut in the early 2000s it has quickly rose to power and will soon be the dominant refrigerant in the automotive industry. This list of latemodel vehicles includes all the oe car manufacturers that have implemented the use of r1234yf refrigerant in their vehicle ac systems. A comparative study on the performance of hfo1234yf and.
R4a is also known as tetrafluoroethane cf3ch2f from the family of hfc refrigerant. The ultima id 1234yf refrigerant analyzer is certified to the sae j2912 refrigerant analyzer standard. This makes the equipments compact and reduced the operating cost. That being said, extensive testing is reported to have shown that it is difficult to ignite r1234yf, but it can be ignited by, for instance, a cherryred hot manifold or a match or butane lighter. Besides, technical issues regarding the use of co 2 in mobile air conditioning v dyhe nd, spite years of development. Systems using r1234yf refrigerant must also use an evaporator compliant with sae j2842. In order to service hfo1234yf systems, shops will need an sae j2843 rrr machine, an sae j2912 or. R1234yf has cooling properties that are similar to r4a, which has been used as an automotive refrigerant since it. This means that one kilogram of r1234yf released to atmosphere has a significantly lower greenhouse effect than a. The following tools needed to properly service r1234yf systems will be shipped to u. Opteon yf hfo 1234yf has a gwp of 4 based on a 100year time horizon, and will meet the eu fgas regulation. Starting in january 2011, all new vehicle types must have an air conditioning refrigerant with a global warming potential gwp below 150.
Any refrigerant, any place, any time sm refrigerants. Solstice yf properties and materials compatibility. Hfo 1234yf is the first in a new class of refrigerants acquiring a global warming potential gwp rating one 335th that of r4a and only 4 times higher than carbon dioxide, which can also be used as a. Through our nationwide network, aspen maintains and distributes the largest selection of refrigerants in the country. A wide variety of refrigerant r1234yf gas options are available to you, such as grade standard, type, and certification. A nextgeneration mobile automobile airconditioning mac refrigerant, hfo1234yf cf3 cf ch2, is being developed with improved environmental characteristics. Additional risk assessment of alternative refrigerant r. Opteon xp44 is wellsuited for use in directexpansion dx chillers. With the discovery of the damaging effect of cfcs and hcfcs refrigerants to the ozone layer, the hfc family of refrigerant has been widely used as their replacement. Investigation of cubic eos models for hfo1234yf refrigerant used. This is based on the mac directive 200640eg, passed in july 2006.
Just the faqs about r1234yf mobile air conditioning. It can be used in new commercial refrigeration equipment and for the retrofit of existing systems. Toxicity is the important properties of refrigerants. Refrigerant simulation software genetron properties suite provides results in tabulated form exportable to excel and in diagrams you are used to pressureenthalpy, temperatureentropy. R1234yf refrigerant industrial hvac system leak detectors. Simulate your system with the right refrigerant and export the results to excel. Today, as i write this in october of 2017 there are approximately thirtyfive million cars.
It has been proposed as a replacement for r4a as a refrigerant in automobile air conditioners. R1234yf provides thermodynamic and transport property data for hfo1234yf 2,3,3. Download table thermodynamic properties of hfo1234yf and hfc4a extracted from refprop 8. R1234yf is a synthetic hfo refrigerant codeveloped by dupont and honeywell as a successor to r4a for automotive airconditioning applications. Purdue university purdue epubs international refrigeration and air conditioning conference school of mechanical engineering 2010 refrigerant r1234yf performance comparison. How is the refrigerant hfo1234yf different from r4a. Also, the procedure for the recovery and recycling of r1234yf refrigerant is a little more involved and timeconsuming than before due to equipment that has more sophisticated leak and purity check capabilities.
Refrigerant properties motor vehicle air conditioning. R1234yf, r4a, r22, r12, hc, unknown, air ambient operating temp range. It is possible that some shops will put r4a into hfo1234yf vehicles. Higher heat transfer coefficient requires smaller area and lower pressure drop. Thermodynamic properties of hydrofluoroolefin r1234yf and. Refrigerant r1234yf has a low global warming potential of 4, compared to 1430 for. R1234yf provides thermodynamic and transport property data for hfo1234yf 2, 3,3. The ph diagram of the two concerned refrigerants, i. If playback doesnt begin shortly, try restarting your device. 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.
Hfo refrigerants are composed of hydrogen, fluorine and carbon atoms, but contain at least one double bond between the carbon atoms. Aspects on the development of hfo and hfohfc refrigerants. Freon 123 refrigerant is a hydrochlorofluorocarbon hcfc replacement for the chlorofluorocarbon cfc r11 in centrifugal chillers. Freon 4a is the standard in many mobile air conditioning ac units, and also replaces r12 in.
R1234yf refrigerant rollout coming in 2017 model year. Technicians should be knowledgeable about the properties of this refrigerant and handle it properly. Snap listed hfo 1234yf as acceptable subject to use conditions on march 29, 2011 76 fr 17488 pdf 34 pp, 455 k, about pdf. 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. R1234yf, thermodynamic property, thermodynamic cycle, equation of. 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. It is also designated r1234yf as the first of a new class of refrigerants. Peter coll from neutronics walks through the automotive industrys newest air conditioning refrigerant, r 1234yf. Free training videos for r1234yf mobile ac systems.
Nextgeneration refrigerant delivers low gwp dupont. Hfo1234yf, new dawn of refrigerant alternatives though co 2 has a gwp as low as 1 and the ozone depletion potential odp is zero, it has some restrictions with respect to thermophysical properties. Its portability and usb integration with the rrr machine, provides a versatile and efficient method of validating the refrigerant purity during service. Both of these hfos have low gwp values hfo 1234yf is 4 and hfo1234ze e is 6, and expecting as the next generation refrigerant. The new refrigerant is r1234yf hfo1234yf, and it will be phased in slowly over time starting with some 2014 model year vehicles. R1234yf and r1234ze e can used in mobile air conditioning. Refrigerants and their application presented by thomas e. Low ozone depletion and excellent environmental properties.
The toxicity depends upon the concentration and exposure. Pdf a comparative study on the performance of hfo1234yf and. In this project, two newly developed refrigerants, r1234yf and r1234ze have been. Genetron properties suite provides results in tabulated form exportable to excel and in diagrams you are used to pressureenthalpy, temperatureentropy.
Topics covered include why we as an industry are choosing to change refrigerant standards again, what r 1234yf is, how fast it is being adopted by the oes, sae standards and equipment recommendations, and the challenges the technician will face in dealing. Usually, the software makes use of these initial model. Yf was the first hfo refrigerant to see mainstream attention. Opteon xl10 r1234yf refrigerant is a nonozone depleting odp hydrofluoroolefin hfo option that meets the industrys growing demands for sustainable, safe, and effective solutions. In 2010, honeywell, along with other members of industry, asked nist to evaluate the thermodynamic properties of a newly developed refrigerant, r1234yf, which has a global warming potential more than a thousand times lower than the current fluid. Hfo1234yf is a replacement for r4a as a refrigerant in automobile air conditioners. The thermodynamic properties of the investigated refrigerants were extracted from refprop 8. Opteon yf hfo 1234yf is a low gwp refrigerant for use in automotive airconditioning. A few years back there was immense pressure in the european union to stop using the hfc r4a for automotive air conditioning. This a2l refrigerant is designed as a replacement for r4a, and can be used. Opteon yf hfo1234yf has physical properties similar to hfc4a. Solstice yf refrigerant is a near dropin replacement for r4a in automobile ac applications, helping automakers around the world comply with eu low gwp requirements.
The thermodynamic properties are based on the information provided in. Measurement and correlation of the thermal conductivity of 2,3,3,3tetrafluoroprop1ene r1234yf and. In 16th international refrigeration and air conditioning conference at purdue, july 1114, 2016. Opteon yf hfo 1234yf has physical properties similar to hfc4a. New high performance, low gwp refrigerants for stationary. Get the best deals on r1234yf refrigerant industrial hvac system leak detectors when you shop the largest online selection at. J639 r744 is a climatefriendly, highpressure refrigerant. Its global warming potential gwp is ultralow, with a rating of less than 1. Viscosity of refrigerants and other working fluids from residual entropy scaling.
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