Hello readers welcome to the new post. Here we will discuss the R-290 Propane Refrigerant PT Chart. For repairing and diagnosing Air conditioners and refrigerators it is suggested to check the current pressure and temperature of the system where it operating. Here we we will discuss the details of R-290 Propane Refrigerant and make its PT chart that helps to diagnose the system. So let’s get started with R-290 Propane Refrigerant PT Chart.
Introudcton to R-290 Refrigerant
- R290 is refrigerant-grade propane that is employed for different AC units and refrigeration. High pure propane comes with low environmental effects and nominal global warming potential which means it does not have harmful effects on the ozone layer.
- It is also a hydrocarbon alternative option of EPA and is used in place of different harmful refrigerants such as R22, R134a, R404a, and R502.
- Some years ago very less people knew the use of propane as a refrigerant. Propane was used in the grill and power the forklift.
- The use of R290 as refrigerant is about more than a hundred years but less used due to flammability risk.
- With time there is advancement in technology and the use of environmentally friendly refrigerants increases.
- The HFC refrigerant is best for handling Global warming effects. Propane is best to use as an alternative.
- The first commercial use propane refrigeration instruments were made in the 1930s.
Properties of R-290
The main features of R290 are listed here
- Its formula is C3H8 and its weight is 44.1 g/mol
- Boiling temperatures is -43.8 (-42.1)
- Critical temperature is 206.1 (96.7)
- Critical pressure is 616.5 (42.5)
- it has a global warming potential of about three
- Ozone depletion potential is zero and ASHRAE Safety Group is A3
R-290 Advantages
R-290 Advantages
- Propane offers lower GWP as compared to R-404A, R-22, and R-134A which is the main cause of R-290’s use is increased in some years for replacement of older and harmful materials
- The performance of R290 is comparable with R-22, R-404A, and R-134a.R-290’s pressure losses are theoretically higher is 49 percent less than the same oil running R22 and 36 percent lower for a coil of R134a reduces the watt use
R-290 PT Chart
THE R290 PT chart is listed here
R290 Temperature (°C) | |||||
R290 Temperature (°C) | Pressure (psig) |
R290 Temperature (°C) | Pressure (psig) |
R290 Temperature (°C) | Pressure (psig) |
-70 | -11.15 | -30 | 9.65 | 10 | 77.62 |
-68 | -10.71 | -28 | 11.62 | 12 | 82.95 |
-66 | -10.23 | -26 | 13.72 | 14 | 88.52 |
-64 | -9.70 | -24 | 15.93 | 16 | 94.31 |
-62 | -9.13 | -22 | 18.28 | 18 | 100.33 |
-60 | -8.50 | -20 | 20.77 | 20 | 106.60 |
-58 | -7.81 | -18 | 23.39 | 22 | 113.11 |
-56 | -7.07 | -16 | 26.16 | 24 | 119.88 |
-54 | -6.27 | -14 | 29.07 | 26 | 126.91 |
-52 | -5.40 | -12 | 32.15 | 28 | 134.20 |
-50 | -4.46 | -10 | 35.38 | 30 | 141.77 |
-48 | -3.44 | -8 | 38.77 | 32 | 149.61 |
-46 | -2.35 | -6 | 42.34 | 34 | 157.73 |
-44 | -1.18 | -4 | 46.08 | 36 | 166.16 |
-42 | 0.08 | -2 | 50.00 | 38 | 174.86 |
-40 | 1.42 | 0 | 54.11 | 40 | 183.87 |
-38 | 2.86 | 2 | 58.41 | 42 | 193.20 |
-36 | 4.40 | 4 | 62.90 | 44 | 202.84 |
-34 | 6.04 | 6 | 67.60 | ||
-32 | 7.79 | 8 | 72.50 |
What is the pressure on a R290 refrigerator?
Formula | C3H8 |
---|---|
Boiling temperature °F (°C) | -43.8 (-42.1) |
Critical temperature °F (°C) | 206.1 (96.7) |
Critical pressure, PSI, (Bar) | 616.5 (42.5) |