Thermodynamic properties of refrigerant R-134a

Thermodynamic properties of refrigerant R-134a.

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Refrigerant R134a Properties
Refrigerant R134a Properties

Thermodynamic properties of refrigerant R-134a, also known as 1,1,1,2-tetrafluoroethane, R-134a, Freon 134a, Forane 134a, Genetron 134a, Florasol 134a, Suva 134a or HFC-134a and norflurane (INN). This is a haloalkane refrigerant with thermodynamic properties similar to R-12 (dichlorodifluoromethane) but with insignificant ozone depletion potential and a somewhat lower global warming potential (1,430, compared to R-12’s GWP of 10,900).[2] It has the formula CH2FCF3 and a boiling point of −26.3 °C (−15.34 °F) at atmospheric pressure. This is a non-flammable gas used primarily as a “high-temperature” refrigerant for domestic refrigeration and automobile air conditioners.

Thermodynamic Properties of Saturated Refrigerant R134a

PressureTemperatureSpecific volume (m^3/kg)Enthalpy (kJ/kg)Entropy (kJ/kg.K)
kPa°CSat Liq
vf
Sat Vap
vg
Sat Liq
hf
Sat Vap
hg
Sat Liq
sf
Sat Vap
sg
60-36.90.00070980.31123.9227.80.01640.9645
80-31.10.00071850.237611.3231.50.04720.9572
100-26.40.00072590.192617.3234.50.07200.9519
120-22.30.00073240.162122.5237.00.09280.9478
140-18.80.00073830.140227.1239.20.11100.9446
160-15.60.00074370.123531.2241.10.12700.9420
180-12.70.00074870.110435.0242.90.14150.9397
200-10.10.00075340.099938.5244.50.15470.9378
220-7.60.00075780.091241.7245.90.16680.9361
240-5.40.00076200.083944.7247.30.17800.9347
260-3.20.00076610.077747.5248.60.18850.9333
280-1.20.00076990.072450.2249.70.19840.9322
3000.70.00077370.067752.8250.90.20770.9311
3202.50.00077730.063655.2251.90.21650.9301
3404.20.00078080.060057.5252.90.22480.9293
3605.80.00078420.056759.8253.80.23280.9284
4008.90.00079070.051264.0255.60.24770.9270
50015.70.00080600.041173.4259.30.28030.9241
60021.60.00082000.034381.5262.40.30810.9219
70026.70.00083320.029488.8265.10.33240.9200
80031.30.00084590.025695.5267.30.35410.9184
90035.50.00085810.0227101.6269.30.37390.9170
100039.40.00087010.0203107.4271.00.39200.9157
120046.30.00089350.0167117.8273.90.42450.9131
140052.40.00091670.0141127.3276.20.45330.9106
160057.90.00094010.0121136.0277.90.47920.9080
180062.90.00096400.0106144.1279.20.50310.9051
200067.50.00098880.0093151.8280.10.52520.9020
250077.60.00105690.0069169.7280.90.57550.8925
300086.20.00114130.0053186.6279.20.62150.8792

Thermodynamic Properties of Superheated Refrigerant R134a

P=60 kPa (Tsat -36.9°C) P=100 kPa (Tsat -26.4°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.3112227.80.964Sat.0.1926234.50.952
-200.3361240.81.018-200.1984239.50.972
-100.3505248.61.048-100.2074247.51.003
00.3648256.51.07700.2163255.61.033
100.3789264.71.107100.2251263.81.063
200.3930272.91.135200.2337272.21.092
300.4071281.41.164300.2423280.71.120
400.4210290.01.192400.2509289.31.149
500.4350298.71.219500.2594298.21.176
600.4488307.71.246600.2678307.11.204
700.4627316.81.273700.2763316.31.231
800.4765326.01.300800.2847325.61.257
900.4903335.41.326900.2930335.01.284
1000.5041345.01.3521000.3014344.61.310

P=140 kPa (Tsat -18.8°C) P=180 kPa (Tsat -12.7°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.1402239.180.94462Sat.0.1104242.90.940
-100.1461246.40.972-100.1119245.20.948
00.1526254.61.00300.1172253.60.980
100.1591262.91.033100.1224262.01.010
200.1654271.41.062200.1275270.61.040
300.1717280.01.091300.1325279.31.069
400.1780288.71.120400.1374288.11.098
500.1841297.61.147500.1423297.01.126
600.1903306.61.175600.1472306.11.153
700.1964315.81.202700.1520315.31.181
800.2024325.11.229800.1567324.61.207
900.2085334.61.255900.1615334.11.234
1000.2145344.21.2821000.1662343.81.260

P=200 kPa (Tsat -10.1°C) P=240 kPa (Tsat -5.4°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.0999244.50.938Sat.0.0839247.30.935
00.1048253.10.97000.0862252.00.952
100.1096261.61.001100.0903260.70.983
200.1142270.21.030200.0942269.41.013
300.1187278.91.060300.0981278.21.043
400.1232287.71.088400.1019287.11.072
500.1277296.71.116500.1057296.11.100
600.1321305.81.144600.1094305.21.128
700.1364315.01.171700.1131314.51.156
800.1407324.41.198800.1168323.91.183
900.1451333.91.225900.1204333.51.209
1000.1493343.61.2511000.1240343.21.236

P=280 kPa (Tsat -1.2°C) P=320 kPa (Tsat 2.5°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.0724249.70.932Sat.0.0636251.90.930
100.0765259.70.968100.0661258.70.954
200.0800268.50.999200.0693267.70.986
300.0834277.41.029300.0723276.71.016
400.0867286.41.058400.0753285.71.045
500.0900295.51.086500.0782294.91.074
600.0932304.71.114600.0811304.11.102
700.0964314.01.142700.0839313.51.130
800.0996323.51.169800.0868323.01.157
900.1028333.11.196900.0895332.61.184
1100.1090352.71.2481100.0950352.31.237
1200.1121362.71.2741200.0978362.41.263

P=400 kPa (Tsat 8.9°C) P=500 kPa (Tsat 15.7°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.0512255.60.927Sat.0.0411259.30.924
100.0515256.60.931200.0421263.50.938
200.0542265.90.963300.0443273.00.970
300.0568275.10.994400.0465282.51.001
400.0593284.31.024500.0485292.01.031
500.0617293.61.053600.0505301.51.060
600.0641301.01.081700.0524311.11.088
700.0664312.41.109800.0543320.81.116
800.0687322.01.137900.0562330.61.144
900.0710331.71.1641000.0583340.51.171
1000.0735341.61.1911100.0600350.61.197
1100.0755351.51.2171200.0617360.71.223
1200.0777361.61.2431300.0635371.01.249
1400.0653381.51.275

P=600 kPa (Tsat 21.6°C) P=700 kPa (Tsat 26.7°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.0343262.430.922Sat.0.0294265.050.920
300.0360270.80.950300.0300268.450.931
400.0379280.60.982400.0317278.580.964
500.0397290.31.012500.0333288.530.995
600.0414300.01.042600.0349298.431.026
700.0431309.71.071700.0364308.331.055
800.0447319.61.099800.0379318.281.084
900.0463329.51.126900.0393328.31.111
1000.0479339.51.1541000.0406338.41.139
1100.0495349.61.1801100.0420348.61.166
1200.0510359.81.2071200.0434358.911.192
1300.0525370.21.2331300.0447369.321.219
1400.0540380.71.2581400.0460379.861.244

P=800 kPa (Tsat 31.3°C) P=900 kPa (Tsat 35.5°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.0256267.30.918Sat.0.0227269.30.917
400.0270276.50.948400.0234274.20.933
500.0285286.70.980500.0248284.80.966
600.0300296.81.011600.0261295.10.998
700.0313306.91.041700.0274305.41.028
800.0327317.01.070800.0286<315.6/td>1.057
900.0339327.11.098900.0298325.91.086
1000.0352337.31.1261000.0310336.21.114
1100.0364347.61.1531100.0321346.61.141
1200.0376358.01.1801200.0332357.01.168
1300.0388368.51.2061300.0342367.61.195
1400.0400379.11.2321400.0353378.21.221
1500.0411389.81.2581500.0363389.01.247
1600.0423400.61.2831600.0374399.91.272

P=1,000 kPa (Tsat 39.4°C) P=1,200 kPa (Tsat 46.3°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.0203271.00.916Sat.0.0167273.90.913
400.0204271.70.918500.0172278.30.927
500.0218282.70.953600.0184289.60.961
600.0231293.40.985700.0195300.60.994
700.0243303.91.016800.0205311.41.025
800.0254314.31.046900.0215322.11.056
900.0265324.71.0751000.0224332.71.084
1000.0276335.11.1031100.0233343.41.112
1100.0286345.51.1311200.0242354.11.139
1200.0296356.11.1581300.0251364.91.166
1300.0306366.71.1851400.0259375.71.193
1500.0325388.21.2371600.0276397.71.245
1600.0335399.21.2621700.0284408.81.270
1800.0292420.11.295

P=1400 kPa (Tsat 52.4°C) P=1600 kPa (Tsat 57.9°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.0141276.20.911Sat.0.0121277.90.908
600.0150285.50.939600.0124280.70.916
700.0161297.10.973700.0134293.30.954
800.0170308.31.006800.0144305.10.987
900.0179319.41.036900.0152316.51.019
1000.0188330.31.0661000.0160327.81.050
1100.0196341.21.0951100.0168338.91.080
1200.0204352.11.1231200.0175350.01.108
1300.0212363.01.1501300.0182361.11.136
1400.0219374.01.1771400.0189372.31.163
1500.0226385.11.2041500.0195383.51.190
1600.0234396.21.2301600.0202394.71.216
1700.0241407.41.2551700.0208406.01.242
1800.0247418.81.2811800.0215417.41.268

P=1800 kPa (Tsat 62.9°C) P=2000 kPa (Tsat 67.5°C)
TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)TemperatureVolumeEnthalpy (kJ/kg)Entropy (kJ/kg.K)
°Cm^3/kgkJ/kgkJ/kg.K°Cm^3/kgkJ/kgkJ/kg.K
Sat.0.0106279.20.905Sat.0.0093280.10.902
700.0113288.90.934700.0096283.90.913
800.0123301.50.970800.0105297.60.952
900.0131313.51.003900.0114310.20.988
1000.0139325.11.0351000.0121322.31.020
1100.0146336.51.0651100.0128334.11.052
1200.0152347.91.0941200.0134345.71.081
1300.0159359.21.1231300.0141357.21.110
1400.0165370.51.1501400.0146368.61.138
1500.0171381.61.1771500.0152380.11.166
1600.0177393.21.2041600.0158391.61.193
1700.0183404.61.2301700.0163403.11.219
1800.0189416.11.2561800.0168414.81.245

3 COMMENTS

  1. Hello Paul

    I have enjoyed your youtube channel very much, thanks. I wander if you had any plans to publish the R410A thermodynamic property tables? I have found the R134A calculations very interesting and I wanted to do the same with R410A since I work with this with VRV and Split systems. I was looking to run through the same calculations and compare the theoretical COP and cooling loads etc with the real experimental data.

    Thanks

    Will

  2. Hello paul,

    Thank you because of your complete description For full description
    I have a qaustion ,why do you start with 320 kpa Pressure in step one of r134a refrigeration ?

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