One benefit of using R-407C at high-ambient conditions is that it operates at relatively low pressure. One drawback to note, though, is R-407C's glide of 10°F. Because R-407C is a
A number of common refrigerants, including R134a, R410A and R407C, will be banned from use in new chillers in the USA from January 1, 2024.
Heating mode The compressor pressure ratio of R-407C was 0.7% to 9.3% higher than R-22 for the two heating mode test conditions.
Opteon™ XP20 (R-449C) refrigerant is a hydrofluoroolefin (HFO) option that replaces R-22 and R-407C in residential and commercial air conditioners, as well as direct expansion chillers. It has similar performance and properties to R-22 and R-407C and can be used in both retrofit and new equipment.
Non-flammable material. Overexposure may cause dizziness and loss of concentration. At higher levels, CNS depression and cardiac arrhythmia may result from exposure. Vapors displace air and can cause asphyxiation in confined spaces.
The commonly used synthetic refrigerants such as R134a, R407C and R410A have a GWP value higher than 2,500. As a result, their production is being phased out.
Notice that R-11 has the highest ODP of 1. R-11 is the most destructive refrigerant and we compare all other refrigerants against it. Note also that R-11 is a CFC, which we have already discussed is the most destructive refrigerant to ozone.
If your system is running on R22 most likely is using mineral oil to lubricate the compressor. If you mix R407C with R22 inside your system the molecule of the HFC (R407C) gas will not link with the oil and in just few months of operation you will have a "sludge" like lubricant formation inside the circuit.
Can I use R32 in my existing air conditioning system? R32 can not be used as a drop-in replacement on existing R22, R407C and R410A systems.
Refrigerant can only be sold to technicians who have a license from the relevant state or federal government.
POE lubricant is recommended for use with Freon™ 407C. In order to achieve equivalent miscibility to R-22/oil, the residual oil should be about 5 wt% or less of the total lubricant used in the system. In larger systems, this amount of residual mineral oil can be achieved by using a flushing technique.
Freon™ 407C can be topped off after a leak, multiple times, with minimal impact on system performance.
Recovery of R-407C requires a cylinder with a service pressure of 300 psig minimum. National Refrigerants, Inc.
In the first half of 2024 we'll phase out our R-410A dedicated models and introduce -01 refrigerant versatile models, compatible with both R-410A and R-454B refrigerants.
R-407C can be used to retrofit existing R-22 systems in positive displacement, direct expansion refrigeration, and air conditioning equipment. R-407C should not be used in centrifugal chillers or other equipment that uses a flooded evaporator, due to its high temperature glide.
R-22 (Chlorodifluoromethane), also known as R22 Freon or HCFC-22 Freon, was a common refrigerant for HVAC systems. It is now a banned refrigerant that is illegal to import or manufacture.
During the first decade of the HCFC phaseout, R-22 production, import, and usage were limited to the service of existing appliances. In 2020, the phaseout strengthened, with usage limited to recycled and stockpiled compounds. The last stage of the phaseout will draw to a close on January 1, 2030.
In most cases, you cannot re-use piping and cable from existing air-conditioning units for any new units you are having installed. This is because different systems use different piping and have their own specific electrical requirements.
Changes to the Dangerous Goods Legislation, effective in 2021, has new categories for A2L refrigerants. R32 is a synthetic greenhouse gas. If released to the atmosphere it can contribute to climate change. R32 is a flammable refrigerant.
Yes. With air-conditioning systems that are similarly optimized, R134a is more energy-efficient than R407C. This fact is explained by the below graph and is demonstrated by the calculation of both cycles using the data and tools published by the leading refrigerant manufacturer – DuPont.
The lubricant that is currently used with R-22 is either Mineral Oil (MO) or Alkylbenzene (AB). The retrofit procedure to R-407C, recommended by manufacturers, requires a lubricant change to Polyol Ester (POE) since the solubility and miscibility of R-407C in either MO or AB are much lower than in POE.
Average R407C prices range between $5 and $7 per pound. R407C is a blend of three components: R32, R125, and R134A. It is well-adapted for air conditioning applications and medium-temperature range chiller equipment.
The Intergovernmental Panel on Climate Change has since added R-134A to its list of greenhouse gases, declaring definitively that this refrigerant is a poor choice for the future of the planet and its inhabitants.
HCs (Hydrocarbons)
These are claimed to be some of the safest refrigerants for the environment while also delivering the most cost-effective cooling. Hydrocarbons are nontoxic refrigerants with no ozone depleting properties and low global warming potential.
Answer and Explanation: The main refrigerant that depletes the ozone layer is chlorofluorocarbons (CFCs).