Due to ozone crises, r22 a refrigerant commonly used in room air condition, is being replaced with another refrigerants. The compositions of freon 407c and freon 407a are as follows. Initial a monogram journal for women girls teens pink. Refrigerants are divided into three groups according to flammability. Check with the compressor manufacturer for any recommendations they may have. R407a has the closest property match to r22 in a low temperature retrofit. However, it seems javascript is either disabled or not supported by your browser. R 407a was developed as a close match to r22s capacities and flow rates, making it well suited as an energy efficient retrofit for r22 in medium and low temperature refrigeration systems for supermarket and food. Free of smoke and pet odors no holes rips or stains letgo. It is believed that the larger discrepancies in the energy balance for r407c and r410a are related to uncertainties of the refrigerant properties.
Common applications include supermarket refrigeration, refrigerated transports, and food processing. R407a was developed as a close match to r22 s capacities and flow rates, making it well suited as an energy efficient retrofit for r22 in medium. It is advisable that the system operating conditions be recorded with the r22 still in the system. The cooling and heating capacities reported in this paper were. A refrigerant is a substance or mixture, usually a fluid, used in a heat pump and refrigeration cycle. Any refrigerant, any place, any time sm refrigerants. In addition to our aspen brand, we also distribute arkema forane, chemours opteon, isceon and freon, honeywell genetron, solstice and mexichem fluor klea and other recognized brands. It is chemically stable, has good thermodynamic properties, low environmental impact and very low toxicity. All are tested to meet or exceed ahri700 purity standards. R407c is a nonazeotropic mixed refrigerant composed of the three ingredients r32, r125. Part 4, pros and cons of r407c refrigerant youtube. The main refrigerants used in the centralized systems are r22 and r507a, especially in usa, and r404a, r507a and r 407a, in europe. Saturation pressuretemperature data for r 407a psig pressure pressure pressure pressure. The following tables show the percentage composition of refrigerant blends found acceptableacceptable this designation means that a substitute may be used, without restriction, to replace the relevant ods within the enduse specified.
Vaporcharging may result in the wrong refrigerant composition and could damage the system. The following tables show the percentage composition of refrigerant blends found. This includes understanding the phaseout schedule and switching over to new hfc refrigerants. Table 4 details the composition of each refrigerant mixture tested in the top up tests as well as the main operating parameters. To completely identify a sporlan thermostatic element the following information is required. R407f is a hfc refrigerant and a poe lubricant will be required. Gea refrigeration technologies has now approve d bock hg and ha compressors for operation with r407f. Green in of hg vacuum black psig saturated vapor calculate superheat. For example, hcfc22 is an acceptable substitute for r502 in industrial process. R407a is an hfc blend that is suitable for use in low and medium temperature refrigeration applications, such as those used in commercial refrigeration, and is an ideal retrofit solution for many existing r404a systems. It is a zeotropic blend of difluoromethane hfc32, pentafluoroethane hfc125 and 1,1,1,2tetrafluoroethane hfc4a.
Honeywell genetron refrigerants hfc retrofit guidelines. For example, hcfc22 is an acceptable substitute for r502 in industrial process refrigeration. R22 is the short name for the halocarbon compound chclf2 monochlorodifluoromethane, which is used as the refrigerant. They generally use direct expansion systems with large refrigerant charges.
R404a products and service information agc chemicals. Further information can be found in the latest version of standard 34, available. It is an ideal retrofit solution for many existing r404a systems, offering a substantially lower carbon footprint due to its lower gwp, and improved energy efficiency. Specify r 407a instead of r404a for new systems 50% reduction in gwp equivalent performance achievable proven technology widely available retrofit of existing r404a systems not generally recommended engineering assessment required r 407a performance similar to r407f 15. Refrigerants r 407a and r407c are mixtures of difluoromethane ch. Als environmental provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of furnished data.
Compositions of refrigerant blends significant new. Refrigerant composition variation during partial dr opin tests. Refrigerant changeover guidelines hcfc r22 to hfc r 407a f, r448a or r449a for medium and low temperature applications hcfc r22 to hfc r407c for high, medium and low temperature applications hcfc r22 to hfc r427a for medium and low temperature applications leading the industry with environmentally responsible refrigerant solutions. This will provide the base data for comparison when the system is put back into operation with the r407c. The vapors are heavier than air and can cause asphyxiation. A zeotrope, is a refrigerant mixture or blend that boils across a range of temperatures at any given pressure. It can be observed that when the proportion of r407h increases, the glide and the latent heat of phase change increase, especially at the evaporation level.
Its thermophysical properties are also broadly similar to r22 and therefore offers. Forane 407a is a lower gwp refrigerant, designed for the replacement of r404a and r507a retrofit and new equipment in medium and low temperature refrigeration. The following tables show the percentage composition of refrigerant blends found acceptable acceptablethis designation means that a substitute may be used, without restriction, to replace the relevant ods within the enduse specified. Technical and legislative information presented in this book. Safety data sheet refrigerant gas r407f national ref. It is a ofhfc32 hfc125 andhfc4a r 407a was developed as a close match tos capacities and flow rates. It is an ideal retrofit solution for many existing r404a systems, offering a substantially lower carbon footprint due. R407a refrigerant 30lb cylinders to 1 ton cylinders agas in the.
Technical r407a data sheet refrigerant gases and products. It possesses outstanding properties as a refrigerant for air conditioners, chillers, vending. R404a is a pseudoazeotropic mixed refrigerant composed of the three ingredients r125, r4a, and r143a, and was developed as a substitute refrigerant for r502 and r22, used in commercial refrigerator equipment for low and medium temperature ranges. Opteon refrigerants low global warming potential refrigerants for air conditioning and refrigeration. Older r22 systems may contain a mineral or alkyl benzene based lubricant that is not compatible with hfcs like r407f. Dupont refrigerants vision we will use our science and technology, market knowledge and global reach.
It has long been used in a variety of airconditioning and refrigeration applications in a variety of markets. Designation and safety classification of refrigerants. Handle in accordance with good industrial hygiene and safety practice, based on the results of the workplace exposure assessment. Refrigerant gas r 407a information is for educational purposes only. Saturation pressuretemperature data for r407a psig pressure pressure pressure pressure. In situations where vapour is normally charged into a system, a valve should be installed in the charging line to flash the liquid to vapour while charging. When pressurised with air or oxygen, the mixture may become flammable or reactive under certain conditions. Never vapor charge the system with vapor from a 400 series refrigerant cylinder. Class 2 indicates refrigerants having a lower flammability limit of more than 0. R407a is an hfc blend that is suitable for use in low and medium temperature refrigeration applications, such as those used in commercial refrigeration. The refrigerants are numbered with an r, followed by the hfcnumber, given by the rules of the fluorocarbons numbering system. Used two 84 log curtains for sale in memphis two 84 log curtains posted by gaby pate in memphis.
Retrofitting r407f can be used to retrofit existing r22 and r404a systems in positive displacement, direct. Technical r 407a data sheet features and uses of r 407a r407a is a ternary mixture nonazeotropic composed of r32, r125 and r4a. R408a closest match to r502 properties and performance. Class 1 indicates refrigerants that do not show flame propagation when tested in air at 21c and 101 kpa class 2 indicates refrigerants having a lower flammability limit of more than 0. Choose the refrigerants you need, select the size and well quote for free nextday delivery to anywhere in the country. A blend of r32, r125, and r4a that has very similar properties to r22 in low. The tables contained on this page list approved refrigerant numbers from ansiashrae 342019, designation and safety classification of refrigerants, the latest edition of standard 34, which describes a shorthand way of naming refrigerants and assigns safety classifications based on toxicity and flammability data. Msds for r407a archived 20110208 at the wayback machine. Experimental and theoritical study of r407c and r407a as. The low gwp refrigerant r407f for highly efficient and. Javascript must be enabled in order for you to use this site.
Forane 404a r404a is a nonozone depleting, near azeotropic blend of hfc refrigerants r125, r143a, and r4a, and is formulated to match the properties of r502, making it useful for a variety of medium and low temperature refrigeration applications. The system should be electrically shut off and the refrigerant properly removed from the system. R 407a is a mixture of gasses used as a refrigerant. What is r22 refrigerant, refrigerant r22 or freon 22 r 22 freon.
Again, misuse of refrigerant recovery and recycling devices can cause explosion and personal injury. The zeotropic mix of difluoromethane with pentafluoroethane and tetrafluoroethane is known as r 407a through r407e depending on the composition. It is shipped as a liquid under its own vapor pressure. Due to high demand for forane r 407a refrigerant, 25 lb. R404a and the initial charge number of kg lbs charged to the system.
Harp 407a is a zeotropic hfc refrigerant blend, which is rated a1 by. Refrigerant r22 is hydroclhorofluorohydrocarbon hcfc. Continuing with our r407a at 140 psig example, were going to continue to add heat to the refrigerant with the same constant pressure. Forane 407a r407a is a nonozone depleting, zeotropic blend of hfc refrigerants r32, r125, and r4a. Msds for a more thorough evaluation of the hazards. Safety data sheet refrigerant gas r407f version 1 revision date. Toxic gases can be produced in fires involving this material.
Although one of its components, r32, is flammable, the overall mixture composition is formulated so that. In addition, the new refrigerant r407f added to the system must be stated, and a logbook must be kept and updated to verify the amount of r407f added to the r404a system. Refrigerant r407a, hfc, r22 r404a replacement climalife. R407c has the closest property match to r22 in an air conditioning retrofit project compared to other blends on the market. Used two 84 log curtains for sale in memphis letgo. Courante in g minor 2 anonymous anders ericson 0279e1c8304d659d434628677afe03 daphne records how u wanna yung tex 027c282a5a52450a8ad90de52681dd5a 1 breed ent smoke em if you got em p gizzle the sticky pimp 027ea8d062cc400e90c66b4378e77550 p gizzle the sticky pimp deep blue defeat athabasca. R22 refrigerant is one of the most commonly used refrigerants. Genetron performax lt r407f home products genetron performax lt r407f replacement for r22 and r404a in supermarket retrofits or new supermarket refrigeration systems with best combination of lowest gwp and energy efficiency. Outstanding features a blend of r32, r125, and r4a that has very similar properties to r22 in air conditioning equipment. Those involved in sales, service, and support of equipment will need to develop strategies for phaseout of r22. Please read the safety data sheet sds before using. R404a products and service information agc chemicals company.
In the present study, r407c and r407a are investigated as dropin. These systems are prone to high leakage rates, especially through the mechanical joints. Opteon refrigerants for air conditioning, refrigeration, and heat pump applications have the optimal balance of performance, environmental sustainability, safety, and cost. In this series from chadwell supply and chadwell universitys vann flippen, walk through the refrigerants available to replace r22 and understand the. Refrigerants physical properties engineering toolbox. Composition single molecule, no temperature glide in subcritical operations suitability as a retrofit refrigerant not suitable due to higher pressures the following table lists the criteria that are important when selecting a refrigerant and shows how well r744 meets these criteria. It has one hydrogen atom in its compound and not all the hydrogen atoms from it are replaced. R407a can also be used as an r22 retrofit for medium and low temperature refrigeration systems but is not intended for airconditioning applications nor.
Climalife, the european leader in refrigerants, offers hfc refrigerant r407a in a choice of packaging. Experimental analysis in a low temperature direct expansion commercial refrigeration system. Many working fluids have been used for such purposes. Application retrofit for medium and low temp refrigeration systems. R407a r407a is an hfc blend that is suitable for use in low and medium temperature refrigeration applications, such as those used in commercial refrigeration.
International journal of refrigeration sciencedirect. R407a is a mixture of gasses used as a refrigerant. R22 refrigerant is also called as freon 22 or simply r 22 freon. R407a safety data sheet national refrigerants, inc. In most cycles it undergoes phase transitions from a liquid to a gas and back again. Pressuretemperature guide dupont suva 407a refrigerants key. R407c products and service information agc chemicals. In order to comply, a new label must be used, stating the original refrigerant i. Green in of hg vacuum black psig saturated vapor calculate superheat bold psig saturated liquid calculate supercooling for 5,000 ft. All refrigerant recovery and recycling devices are to be used by trained and certified refrigeration technicians only. Through our nationwide network, aspen maintains and distributes the largest selection of refrigerants in the country. Technical r407a data sheet features and uses of r407a r407a is a ternary mixture nonazeotropic composed of r32, r125 and r4a. Pioneering successful testing of r407f as r404a replacement.
The mass fractions %wt of the components in each refrigerant are. Technical and legislative information presented in this book is current as of the date of. Element size numberrefrigerantthermostatic chargemop maximum operating pressureif other than standardcapillary tubing lengthbulb size if other than standard. Genetron performaxtm lt, r407f thermodynamic properties.
Initial a monogram journal for women girls teens pink floral monogrammed notebook 120 pages large 8. National refrigerants reference guide download united. It is essential that blend refrigerants be liquidcharged by removing only liquid from the cylinder. Weighs out to 30lbs this is the gross weight r 407a is a mixture of gasses used as a. For our purposes, we can define the bubble point of a zeotropic refrigerant blend is the point at which the first bubble appears.