Propriet dellaria a pressione atmosferica

Pagina 1

Proprietà termofisiche dell’aria a pressione atmosferica T (°C) ρ (kg/m3) cp (J/kgK) µ⋅105 (Ns/m2) k (W/mK) Pr ρ2gβ/µ2⋅10-8 (m-3K-1) -50 1.582 1003 1.45 0.0198 0.735 5.2360 -40 1.514 1003 1.51 0.0205 0.737 4.2330 -30 1.452 1003 1.56 0.0213 0.735 3.4964 -20 1.395 1003 1.61 0.0220 0.732 2.9087 -10 1.342 1003 1.65 0.0228 0.726 2.4655 0 1.293 1004 1.70 0.0235 0.725 2.0767 10 1.247 1004 1.75 0.0243 0.724 1.7593 20 1.204 1005 1.80 0.0250 0.724 1.4984 30 1.165 1005 1.85 0.0257 0.723 1.2827 40 1.127 1006 1.90 0.0264 0.723 1.1033 50 1.093 1006 1.94 0.0271 0.719 0.9630 60 1.060 1007 1.99 0.0278 0.720 0.8352 70 1.029 1007 2.03 0.0285 0.716 0.7345 80 1.000 1008 2.08 0.0292 0.717 0.6418 90 0.972 1009 2.12 0.0299 0.715 0.5682 100 0.946 1010 2.16 0.0306 0.713 0.5045 110 0.921 1011 2.20 0.0313 0.711 0.4492 120 0.898 1012 2.24 0.0319 0.710 0.4011 130 0.876 1013 2.29 0.0326 0.712 0.3559 140 0.855 1014 2.33 0.0333 0.710 0.3194 150 0.834 1016 2.37 0.0339 0.710 0.2873 160 0.815 1018 2.41 0.0345 0.710 0.2591 170 0.797 1020 2.45 0.0352 0.710 0.2341 180 0.779 1021 2.49 0.0358 0.710 0.2120 190 0.762 1023 2.53 0.0364 0.710 0.1923 200 0.746 1025 2.57 0.0371 0.711 0.1748 210 0.731 1027 2.61 0.0377 0.712 0.1592 220 0.716 1029 2.65 0.0383 0.712 0.1452 230 0.702 1031 2.68 0.0389 0.711 0.1337 240 0.688 1033 2.72 0.0395 0.712 0.1223 250 0.675 1035 2.76 0.0401 0.713 0.1121 260 0.662 1037 2.80 0.0406 0.714 0.1029 270 0.650 1039 2.83 0.0412 0.713 0.0953 280 0.638 1040 2.86 0.0418 0.712 0.0883 290 0.627 1041 2.89 0.0424 0.710 0.0820 300 0.616 1042 2.92 0.0429 0.709 0.0762