No ,R404A works at higher pressure and is much better in absorbing and releasing heat .
Opteon™ XP44 (R-452A) refrigerant is a non-ozone depleting, low global warming potential (GWP) hydrofluoroolefin (HFO) based replacement for R-404A and R-507 refrigerants. It can be used in new commercial refrigeration equipment and for the retrofit of existing systems.
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.
Rs44b can be mixed with r22.
The heat exchange amount of R404A was larger than that of R22, and the difference in heat exchange amount decreases first and then increases with the increase of branches, and the maximum difference was 4.41%. R404A can be used as a substitute for R22 and had a higher heat exchange rate.
No ,R404A works at higher pressure and is much better in absorbing and releasing heat . R22 refrigerant condenser is not efficient for r404a .
In existing systems mid-size refrigeration applications, between 2 to 40 kW, we recommend R448A, R449A or R452A. The same applies for new installations at medium temperatures, including R134a. We can see A2L-R454A, R455C and R1234yf emerging for new systems.
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.
Freon™ 404A (R-404A) is a blended hydrofluorocarbon (HFC) refrigerant comprised of R-125, R-134a, and R-143a. It was designed to replace R-502 and R-22 used in commercial refrigerator equipment for low and medium temperature ranges.
Freon™ MO99 can be used to retrofit R-22 heat pumps .
Freon MO99 is the gold standard for R-22 alternatives and was developed by the same scientists who engineered Freon R-22. The benefits of Freon MO99 include: Capacity — The ability of Freon MO99 to heat or cool a given space is closer to Freon R-22 than any other refrigerant on the market.
What are the best replacements for R404A? For cold rooms and other small to medium commercial refrigeration applications, R448A and R449A and R452A or R134a are excellent alternatives to R404A, with from 50 to 65% reduction in GWP.
Mixing R22 with R407C
According to the 609 EPA rule, mixing refrigerants is illegal and anybody caught doing so will be heavily fined. Although you may this restriction is primarily political we would like to give you a basic education to explain the two most devastating effects of such action: To the environment.
The problem of using R404A instead of R22 is the problem of lubricating oil. It is necessary to use PVE ester oil instead of mineral oil for R22. Ester lubricants have a high affinity for water and a poor dehydrogenation.
The F-Gas legislation accelerates the phasing-out of R404A and R507 refrigerants. These are the gases with a GWP above 2,500. From 1 January 2020, only regenerated and/or reclaimed R404A or R507 may be used in your system. From 1 January 2030, the use of these refrigerants will be completely banned.
The different types of refrigerants are not meant to be mixed.
R-22 is a single chemical compound, “Chlorodifluoromethane”, a leak can be “topped off” without negative effect, the leak should be repaired but a “top off” is allowed on residential equipment. The refrigerant can be charged in either liquid or vapor modes.
For the 404A walk-in freezer, the ideal average suction pressure should fluctuate between 10 and 30 psi.
All new cooling and refrigeration systems that support R-404a will no longer be available from 1st January 2020. Therefore throughout 2018 and 2019, the refrigeration systems running on R-404a will need to be replaced or support a retrofit alternative refrigerant.
So… what refrigerant can be mixed with R-22? None. You can't mix refrigerants.
Refrigerant Gas R404A is a colorless odorless mixture of three hydrofluorocarbon compounds in near-azeotropic proportions. Azeotropic mixtures have sharp boiling points instead of boiling over a range of temperatures, which is the case with most mixtures.
If you use R-22 in the same system as R-410a, the compressor is going to be trying to work two different fluids through the same coils as both refrigerants respond differently to different mechanical situations. As you might imagine, this isn't going to go well for your air conditioner or heat pump.
R404A refrigerant will not explode in the air environment of normal temperature and pressure [6]. The C2H3F3 in R404A refrigerant is heavier than air and can spread to a relatively far place at a lower place. It is easy to burn or explode when it comes into contact with heat, sparks, flames or oxidants.
R454C and R455A can be the most viable low GWP options to perform a direct replacement of R404A because of the similar characteristics. They only present meaningful differences in flammability, critical temperature, temperature glide and vapor density.
48 Along with that, the experiments have reported R410A to be a feasible substitute for R404A in medium-temperature refrigeration systems, whereas they report R407F to be a feasible substitute for R404A in lowtemperature refrigeration systems.