R-438A should not be mixed with any other refrigerant! Demand Cooling™ is required for low temperature applications. 5. When retrofitting from R-22 to R-438A, the
Refrigerant R-22 has been successfully used with mineral oil in residential air-conditioning and heat pump systems (AC/HP).
Rs44b can be mixed with r22.
Among those products is Freon™ MO99™ (R-438A), a retrofit refrigerant for R-22 that does not require an oil change. Freon™ MO99™ works with: Residential and commercial air conditioning systems (rooftop and indoor packages units, direct expansion chillers, split systems)
Freon MO99 is the closest capacity match to R-22, compared with most other no-oil change refrigerants.
R-438A should not be mixed with any other refrigerant! Demand Cooling™ is required for low temperature applications. 5. When retrofitting from R-22 to R-438A, the expansion valve will likely not require replacement; however, it is recommended that the valve loadings be evaluated to verify that they are adequate.
Freon™ MO99 can be used to retrofit R-22 heat pumps .
R417A refrigerant is an HFC mixture that serves as a substitute for R22. It is compatible with traditional lubricants. In most cases, the lubricant type does not need to be changed in the event of retrofitting.
R-438A is a non-ozone depleting hydrofluorocarbon (HFC) refrigerant blend which can be used to retrofit existing hydrochlorofluorocarbon (HCFC) refrigerant R-22 refrigeration and air conditioning systems with direct expansion evaporators and positive displacement compressors.
It is concluded that R458A performs well as a drop-in alternative refrigerant to R22 and surpasses that of R453A, as it showed slightly less deviation in coefficient of performance.
At the very least, leaks will occur. Mixing refrigerants is not an option either. This will contaminate the system, and the R22 will not evaporate under the higher suction pressure that R410A requires.
The information below will try to dispel some of these myths. Arkema recommends using Forane® 427A (R427A) - The EASY RETROFIT™ for your r-22 retrofit solution. When it comes to drop-ins, the truth is that there are none. The hope of “drop-in” refrigerants has become common over the years.
The biggest problem of using refrigerant R404A to replace refrigerant R22 is the problem of lubricating oil. PVE ester oil must be used to replace the mineral lubricating oil for R22. Ester lubricants have high affinity with water and poor dehydration.
Since 2010, the most common R-22 replacement was R-410A, a refrigerant without the ozone-depleting qualities of R-22. Read this article on the refrigerant transition for a more thorough explanation of the reasoning and science behind the change.
No ,R404A works at higher pressure and is much better in absorbing and releasing heat .
R448A is not a “Drop-in” Replacement
The retrofit procedures listed here have been developed by Honeywell to address these issues and to help technicians perform successful retrofits of R22 systems utilizing positive- displacement (reciprocating, rotary, scroll or screw) compressors.
R438A (Freon™/Isceon MO99) is a HFC blend, used as a replacement for R22 in domestic, industrial and commercial air-conditioning systems.
Freon™ MO99 refrigerant is a relatively affordable and eco-friendly alternative for R22 air conditioners. You can use it to revive older systems with little to no refrigerant charge, as well as systems that need replacement components.
R438A is a zero-ODP hydrofluorocarbon blend. Containing less than 3% hydrocarbons, it ensures compatibility with mineral oils while eliminating the risk of flammability. This blend has been shown to be as efficient as R22, thus combining environmental gains with similar energy costs.
So… what refrigerant can be mixed with R-22? None. You can't mix refrigerants.
How much will an R-22 to R-410A conversion cost? The actual cost will depend on many things, including where you live, but most of the time R-22 conversions start at around $2,000 and go up from there. The higher end of that range is somewhere around $4,500 to $4,600.
Using these retrofit guidelines, many R-22 systems can be retrofitted for use with Freon™ 407C in air conditioning, heat pump applications, and refrigeration applications to allow existing equipment to continue to operate safely and efficiently, even after R-22 is no longer available.
Mixing refrigerants is not recommended.
It is not only uneconomical and impractical to mix different types of refrigerants, but it can also be dangerous. Along with that, it is illegal to mix refrigerants. So, not only does it make sense to use the right kind of refrigerant for your system, but it's also the law.
As a solution, there are two alternative refrigerants used as substitute refrigerant for R22, namely R290 and R32. The R290 is widely used as working fluid in A/C system of Europe countries; meanwhile in Japan and South East countries, R32 is utilized as substitute refrigerant for R22 and R410A (Yu et al., 2010).