Page 30 - Mechanical Engineers' Handbook (Volume 4)

Thermophysical Properties of Fluids 19

Table 11 Thermophysical Properties of Methane at Atmospheric Pressure a
Temperature (K)
250 300 350 400 450 500 550 600 650 700
v 1.275 1.532 1.789 2.045 2.301 2.557 2.813 3.068 3.324 3.580
h 1090 1200 1315 1437 1569 1709 1857 2016 2183 2359
s 11.22 11.62 11.98 12.30 12.61 12.91 13.19 13.46 13.73 14.00
2.04 2.13 2.26 2.43 2.60 2.78 2.96 3.16 3.35 3.51
c p
Z 0.997 0.998 0.999 1.000 1.000 1.000 1.000 1.000 1.000 1.000
413 450 482 511 537 562 585 607 629 650
v s
0.0276 0.0342 0.0417 0.0486 0.0571 0.0675 0.0768 0.0863 0.0956 0.1052
0.095 0.112 0.126 0.141 0.154 0.168 0.180 0.192 0.202 0.214
Pr 0.701 0.696 0.683 0.687 0.690 0.693 0.696 0.700 0.706 0.714
a 3
v specific volume (m /kg); h specific enthalpy (kJ/kg); s specific entropy (kJ/kg K); c p specific heat at constant pressure (kJ/kg
velocity of sound (m/s); thermal conductivity (W/m K); viscosity 10 4 N s/m 2
K); Z compressibility factor Pv/RT; v s
2
(thus, at 250 K the viscosity is 0.095 10 4 N s/m 0.0000095 Pa s); Pr Prandtl number.

Table 12 Thermophysical Properties of Saturated Refrigerant 22 a
v (m /kg) h (kJ/kg) s (kJ/kg K)
3
T c p
(K) P (bar) Liquid Vapor Liquid Vapor Liquid Vapor (Liquid) (Liquid) (Liquid) (Liquid)
150 0.0017 6.209. 4 b 83.40 268.2 547.3 3.355 5.215 1.059 0.161
160 0.0054 6.293. 4 28.20 278.2 552.1 3.430 5.141 1.058 0.156
170 0.0150 6.381. 4 10.85 288.3 557.0 3.494 5.075 1.057 0.770 0.151
180 0.0369 6.474. 4 4.673 298.7 561.9 3.551 5.013 1.058 0.647 0.146
190 0.0821 6.573. 4 2.225 308.6 566.8 3.605 4.963 1.060 0.554 0.141
200 0.1662 6.680. 4 1.145 318.8 571.6 3.657 4.921 1.065 0.481 0.136 0.024
210 0.3116 6.794. 4 0.6370 329.1 576.5 3.707 4.885 1.071 0.424 0.131 0.022
220 0.5470 6.917. 4 0.3772 339.7 581.2 3.756 4.854 1.080 0.378 0.126 0.021
230 0.9076 7.050. 4 0.2352 350.6 585.9 3.804 4.828 1.091 0.340 0.121 0.019
240 1.4346 7.195. 4 0.1532 361.7 590.5 3.852 4.805 1.105 0.309 0.117 0.0172
250 2.174 7.351. 4 0.1037 373.0 594.9 3.898 4.785 1.122 0.282 0.112 0.0155
260 3.177 7.523. 4 0.07237 384.5 599.0 3.942 4.768 1.143 0.260 0.107 0.0138
270 4.497 7.733. 4 0.05187 396.3 603.0 3.986 4.752 1.169 0.241 0.102 0.0121
280 6.192 7.923. 4 0.03803 408.2 606.6 4.029 4.738 1.193 0.225 0.097 0.0104
290 8.324 8.158. 4 0.02838 420.4 610.0 4.071 4.725 1.220 0.211 0.092 0.0087
300 10.956 8.426. 4 0.02148 432.7 612.8 4.113 4.713 1.257 0.198 0.087 0.0071
310 14.17 8.734. 4 0.01643 445.5 615.1 4.153 4.701 1.305 0.186 0.082 0.0055