R513A refrigerant is used to provide cooling in industrial and home refrigeration systems since it offers high energy efficiency and excellent thermodynamic properties. It offers good cooling capacity for medical, food, and chemical processing, and for vehicles. It is used in refrigeration systems. In this post, we will cover the detailed features of the R513A refrigerant and its relevant features. So let’s get started
Introduction to R513A Refrigerant
R513A is environmentally friendly and does not affect ozone; it comes as a mixture of HFO-1234yf and HFC-134a. Its GWP value is 465 to 675, and its ozone depletion potential is zero, which has a short effect on the environment.
Its high-performance features make it the best replacement for R134a since it has high efficiency. This refrigerant is part of a refrigeration system, such as a cold storage system, food processing system, advanced chiller, or refrigerator.
It is non-flammable and non-toxic, so it is a good replacement for R-134a refrigerant. R513A is known as Opteon XP10 refrigerant and is also commercially called Solstice 513A refrigerant.
R513A is an A1 refrigerant according to ASHRAE Standard 34, the same safety class as R-134a. It works as an azeotrope, having 0 temperature glide. As compared to HFO blends, R513A charges in the liquid phase for proper blend composition.
R513A Pressure-Temperature Chart (PT Chart)
Temperature (°C) | Liquid Pressure (bar gauge) | Vapor Pressure (bar gauge) |
| -40 | -0.4 | -0.4 |
| -30 | -0.03 | -0.03 |
| -20 | 0.51 | 0.5 |
| -10 | 1.24 | 1.23 |
| 0 | 2.22 | 2.22 |
| 10 | 3.49 | 3.49 |
| 20 | 5.12 | 5.12 |
| 30 | 7.15 | 7.15 |
| 40 | 9.66 | 9.66 |
| 50 | 12.69 | 12.69 |
| 60 | 16.34 | 16.33 |
| 70 | 20.67 | 20.67 |
| 80 | 24.71 | 24.7 |
| 84 | 28.11 | 28.1 |
| 86 | 29.32 | 29.31 |
| 88 | 30.57 | 30.56 |
| 90 | 31.87 | 31.86 |
R513A Physical Properties
| Property | R-513A Value / Description |
| Refrigerant Name | R-513A |
| Trade Name | Opteon XP10, Solstice 513A |
| Chemical Classification | HFC/HFO Near-Azeotropic Blend |
| Chemical Composition | R-1234yf (56%) + R-134a (44%) |
| Molecular Weight | 108.4 g/mol |
| Boiling Point | −20.6°F |
| Critical Temperature | 205.7°F |
| Critical Pressure | 546.2 psia |
| Â Applications | Commercial refrigeration, mobile air conditioning, and retrofitted systems |
| Temperature | Medium- and high-temperature refrigeration |
| Replacement Refrigerant | R-134a |
| Global Warming Potential (GWP) | 631 (AR4); 573 (AR5) |
| GWP Reduction | Approximately 56% lower than R-134a (based on AR5 values) |
| Ozone Depletion Potential (ODP) | 0 |
| ASHRAE 34 Safety Classification | A1 |
| Toxicity | Low toxicity |
| Flammability | Class 1 – No flame propagation |
| Temperature Glide | Near-zero |
| Lubricant Compatibility | POE (Polyolester) synthetic oil |
| Charging Method | Liquid-phase charging only |
| Retrofit Compatibility | work drop-in replacement for R-134a, subject to system requirements |
| Cylinder Identification | Identify refrigerant using the cylinder label and safety data sheet, not color alone |
R513A vs Other Refrigerants Comparison Table
| Properties | R513A | R134a | R450A | R1234yf | R515B | R404A | R507A |
| Refrigerant type | HFC/HFO | HFC | HFC/HFO | HFO | HFO/HFC | HFC | HFC |
| Composition | 56% R1234yf + 44% R134a | Pure | 58% R1234ze + 42% R134a | Pure | 91.1% R1234ze + 8.9% R227ea | HFC blend | HFC blend |
| ASHRAE safety class | A1 | A1 | A1 | A2L | A1 | A1 | A1 |
| GWP (AR5) | 573 | 1430 | 547 | 4 | 292 | 3922 | 3985 |
| ODP | 0.00 | 0 | 0 | 0 | 0 | 0 | 0 |
| Normal boiling point (°C) | -29.1 | -26.1 | -23.4 | -29.5 | -19 | -46.5 | -46.7 |
| Temperature glide | Very low | None | Low | None | Very low | Low | None |
| Flammability | Non-flammable | Non-flammable | Non-flammable | Mildly flammable | Non-flammable | Non-flammable | Non-flammable |
| Â application | Medium-temperature refrigeration | Refrigeration and AC | Medium-temperature refrigeration | Automotive AC | Chillers | Commercial refrigeration | Commercial refrigeration |
Read also R744 Refrigerant: Properties, Working, Applications and Technical Specifications
R513A Applications
R513A is used in refrigeration where medium- to high-temperatures are needed, such as
HVAC
The main uses for R513A refrigerant are in large-capacity centrifugal chillers of different locations, such as hospitals, data centers, and cooling plants. R513A comes with the same features as R314A, so it is best to replace it as part of the new building refrigerant for centrifugal compressor systems.
Direct expansion water chillers:
Screw chillers are part of industries and commercial projects, about range of 10–200 TR, according to the required working temperature, the same as R513A’s properties.
Commercial refrigeration:
Different stores’ walk-in coolers and medium-temperature industrial refrigeration systems.
Hybrid cascade systems:
R513A is a part of high-temperature phase refrigerants used in low-temperature applications.
Ice rink systems:
Direct expansion ice rink floor refrigeration systems as a replacement for R-134a
Advantages of R513A Refrigerant
Read more R422B Refrigerant PT Chart
The main advantages of the R513A refrigerant are
Compatibility
R513A is supported with polyol ester lubricants, with R-134a components, expansion valves, and compatibility with thermodynamics and physical features. R513A refrigerant comes with environmentally friendly features and is sustainable for large- to medium-temperature cooling.
Safety factor
R513A is classified as an A1 refrigerant according to ASHRAE as A1. This refrigerant fulfills details of European and international regulations; therefore, R513A is a safe refrigerant, but it should be managed based on industrial hygiene standards and safety practices.
Environmentally friendly
R513A has a low GWP because it is a non-ozone-depleting hydrofluoroolefin-based refrigerant with a zero ODP value. It doesn’t affect the ozone layer by reducing HFC emissions. These features make R513A an eco-friendly, low-GWP cooling option that solves global warming issues and reduces carbon footprint.
Low GWP
R513A refrigerant has low global warming Potential alternative for high GWP HFCs, for example, R-134a refrigerant in part of the air conditioning ventilation, heating, and refrigeration system. R513a has a GWP value of 465 to 631, or 56% lower than R-134a. Refrigerant R513A comes with a blend of HFO-1234yf and HFC-134a.
Frequently Asked Questions
Define R513A refrigerant.
R513A is a near-azeotropic HFC/HFO refrigerant mixture of 56% R-1234yf and 44% R-134a that has a GWP of 631, 56% lower than R-134a’s 1,430. It’s mainly used as a low-GWP replacement for R-134a in centrifugal chillers and medium-to-high temperature refrigeration systems.
What are the uses of R513A?
R513A is employed in centrifugal chillers in data centers, buildings, and cooling plants. It is part of direct expansion water chillers, ice rink floors, and refrigeration projects where R134a can be replaced with R513A.
Is R513A a replacement for R-134a?
R513A is used as a replacement for R134A devices but is not a direct replacement. Polyol ester lubricant is best for different projects.
What is the GWP of R513A?
r513a comes with 100 years of GWP 631 on the AR4 basis and 573 according to the AR5 configuration. Based on R134A, make an assessment. Low GWP does not ensure compliance in each type applied according to capacity.
Why must R513A be charged in the liquid form?
R513A is a mixture withdrawn from a cylinder in liquid form to maintain the components. Cylinder phases and phase-adjusting systems have different factors. In suction-side charging, withdrawn liquid should be checked and vaporized before adding to the suction line. Never add liquid directly to the line. Get details of manufacturing details and employ the services of a professional.
What oil is used for R513A?
Sme R134A comes with polyol ester (POE) lubricant when transformed to R513A. Ensure the lubricant brand and viscosity match the compressor manufacturer. Vary lubricant if selecting, not sure or showing contamination or high acid number
What is the trade name for R513A?
R513A is sold through Chemours under the trade name Opteon XP10. This is the same refrigerant mixture: 56% R-1234yf and 44% R-134a.
How does R513A compare to R454B?
| Property | R513A | R454B |
| Refrigerant type | HFC/HFO blend | HFC/HFO blend |
| Chemical composition | R1234yf (56%) + R134a (44%) | R32 (68.9%) + R1234yf (31.1%) |
| Refrigerant generation | Low-GWP alternative to R134a | Low-GWP alternative to R410A |
| ASHRAE safety class | A1 | A2L |
| Toxicity | Lower toxicity | Lower toxicity |
| Flammability | Non-flammable | Mildly flammable |
| Molecular weight | 108.4 g/mol | 62.6 g/mol |
| Normal boiling point |  −29.2°C |  −50.9°C |
| Critical temperature |  97.5°C |  77.1°C |
| Critical pressure | Â 3.77 MPa | 4.8 MPa |
| GWP (100-year) | Â 631 | 466 |
| ODP | 0 | 0 |
| Temperature glide | Very low | Very low |
| Refrigeration oil | POE commonly used | POE commonly used |
| Operating pressure | Lower than R454B in typical applications | Higher-pressure refrigerant |
| application | Chillers and refrigeration | Air conditioners and heat pumps |
| replacement | R134a | R410A |
