Hello readers welcome to the new post. Here we will learn the R-449A Pressure Temperature Chart. R449a is a mixture of hydrofluorocarbons (HFC) and hydrofluoro-olefin molecule R1234yf (HFO), that composition of R125 (25%), R32 (24%), R134a (26%), and R1234yf (25%) gases. Refrigerant R449a has non-toxic features with non-flammability and is given the A1 safety features for EN 378 and ASHRAE 34 standards. Chlorine does not exist in R449a and it has 0 ozone depletion potential value. Its global warming potential is 64 percent less than R404a. It is best for new installation and also for retrofitting existing circuits, providing good energy efficiency and environmental features. Let’s get started with R-449A Pressure Temperature Chart.
R-449A Pressure Temperature Chart
R449A PT Chart | ||
Temperature (°C) |
Pressure Liquid (psig) |
Pressure (psig) Vapour |
-70 | -11.18 | -12.34 |
-68 | -10.71 | -12.00 |
-66 | -10.19 | -11.62 |
-64 | -9.62 | -11.19 |
-62 | -8.99 | -10.73 |
-60 | -8.30 | -10.21 |
-58 | -7.54 | -9.63 |
-56 | -6.71 | -9.00 |
-54 | -5.80 | -8.31 |
-52 | -4.81 | -7.55 |
-50 | -3.74 | -6.72 |
-48 | -2.58 | -5.81 |
-46 | -1.32 | -4.82 |
-44 | 0.04 | -3.75 |
-42 | 1.50 | -2.58 |
-40 | 3.08 | -1.32 |
-38 | 4.78 | 0.04 |
-36 | 6.60 | 1.52 |
-34 | 8.56 | 3.10 |
-32 | 10.65 | 4.81 |
-30 | 12.88 | 6.64 |
-28 | 15.27 | 8.61 |
-26 | 17.81 | 10.71 |
-24 | 20.51 | 12.96 |
-22 | 23.39 | 15.37 |
-20 | 26.44 | 17.93 |
-18 | 29.68 | 20.66 |
-16 | 33.10 | 23.56 |
-14 | 36.73 | 26.65 |
-12 | 40.56 | 29.92 |
-10 | 44.61 | 33.39 |
-8 | 48.88 | 37.06 |
-6 | 53.37 | 40.95 |
-4 | 58.10 | 45.05 |
-2 | 63.08 | 49.38 |
0 | 68.31 | 53.95 |
2 | 73.79 | 58.77 |
4 | 79.55 | 63.83 |
6 | 85.58 | 69.16 |
8 | 91.90 | 74.76 |
10 | 98.51 | 80.65 |
12 | 105.42 | 86.82 |
14 | 112.64 | 93.29 |
16 | 120.17 | 100.07 |
18 | 128.04 | 107.17 |
20 | 136.24 | 114.59 |
22 | 144.78 | 122.36 |
24 | 153.67 | 130.47 |
26 | 162.92 | 138.95 |
28 | 172.55 | 147.80 |
30 | 182.56 | 157.02 |
32 | 192.95 | 166.65 |
34 | 203.75 | 176.67 |
36 | 214.95 | 187.12 |
38 | 226.56 | 198.00 |
40 | 238.61 | 209.31 |
42 | 251.08 | 221.10 |
44 | 264.02 | 233.33 |
46 | 277.39 | 246.07 |
48 | 291.23 | 259.30 |
50 | 305.56 | 273.05 |
52 | 320.36 | 287.33 |
54 | 335.68 | 302.17 |
56 | 351.48 | 317.58 |
58 | 367.81 | 333.57 |
60 | 384.67 | 350.19 |
62 | 402.07 | 367.43 |
64 | 420.02 | 385.34 |
66 | 438.52 | 403.96 |
68 | 457.61 | 423.28 |
70 | 477.27 | 443.40 |
Is R449A a replacement for r22?
Can I replace R404A with R449A?
Can I replace R-22 with R32?
What is the best alternative to R-22?
Is R449A flammable?
What is the difference between R404A and R449A?
What pressure should R449A run at?
Who makes R449A?
Is R449A ozone depleting?
R449A an F gas?
Can you mix 449A and 404a?
R449A PROPERTIES
ASHRAE NUMBER | R449a |
COMPOSITION |
R32/R125/R1234yf/R134a
|
BOILING POINT @ 1ATM [°C] | -$46 |
GWP AR5 | 1397 |
ASHRAE SAFETY CLASS | A1 |
TEMPERATURE GLIDE [K] | 0 |
MOLECULAR WEIGHT [G/MOL] | 87.2 |
LIQUID DENSITY @ 21.1°C [KG/M³] | 1113.3 |
CRITICAL TEMPERATURE [°C] | 81.5 |
OZONE DEPLETION POTENTIAL | 0 |
APPLICATIONS:
- It is used in low and medium temperatue commercial and industries DF refrigeration.
- it is condensing units and cold stores.
- it is used for cold stores
- it used in new instruments and retrofit of existing system
Features & Benefits:
- It used as a replacement for R404A and R507
- It is a zeotropic refrigerant blend that comes with R32, R125, R1234yf, and R134a
- Refrigerant must charged from the liquid phase to make sure of the composition.
- The refrigerant cylinder comes with dual port valves making liquid offtake easily.
- It is reno flammable and comes with a safety classification of A1
- Its storage must be kept away from fire, and heat and avoid direct sunlight. it is normally up in a cool, dry, and ventilated place. The cylinder, valve, and other devices can be damaged, so they need careful handling.
- It has a low GDP with high-quality air700 and accepts SGS and third-party inspection.
- R49a is an HFO blend used for R404A and R507 for low and medium-temperature refrigeration GWP of 1397 provides good energy efficiency and environmental properties.
R134a vs R404A
Composition
- R134a also has the formula CH2FCF3, and it is an ozone-friendly refrigerant. It does not have chlorine which makess it environmentally friendly.
- R404A is a mixture of hydrofluorocarbon refrigerants, such as R125, R143a, and R134a. It is not evaporated and has condensing features at a constant temperature.
Temperature Range
- R134a is used in medium temperature ranges such as freezers, refrigerators used at homes, and vehicle AC systems. It has a high evaporating temperature so used for these applications.
- R404A is used for low-temperature conditions and for commercial freezers, cold storage warehouses, and ICe refrigerators. It has low evaporating temperatures so works well for sub-zero conditions.
Environmental Affect
- R134a comes with lower GWP than other refrigerants and it is environmentally friendly. While R404A comes with high GWP has effect on global warming.
What should the high and low side pressures be for R404A?
In the R404A walk-in coolers the low side pressure is about 55 to 60 PSI and the high side pressure ranges is 200-225 psi. That pressure makes sure the cooler works in the proper way
What is the difference between 404A and 449A?
449A (XP40) is used forretrofit R404A, R22 and R4047 refrigerant. The 449A boiling point is less than minus 40 degrees. That provide positive gague pressureat evaporator level. The high critical temperature best to use R404A for good working in high ambient temperatures.
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