from scipy.constants import R, N_A
from sage.misc.latex import pretty_print
# Einheiten
mol = units.amount_of_substance.mole
Pa = units.pressure.pascal
m = (units.length.meter)
K = units.temperature.kelvin
g = units.mass.gram
J = units.energy.joule
kg = g*10^3
R = R*J/(K*mol)
ML = 28.964*g/mol
cpWig = 1.86*J/(mol*K)
cpWl = 4,18*J/(mol*K)
cpLig = 1*J/(mol*K)
# ---------------------------------------------------------------------
# Parameter
p = 10^5*Pa
T = 293.15*K
masse = 1*kg
n = masse/ML
print "\n1 kg Luft bei Standardbedingungen:"
V = n*R*T/p
pretty_print (V.convert())
print "\n1 mol Luft:"
n = 1*mol
V = n*R*T/p
pretty_print (V.convert())
# ------------------------------------------------------------------------
igg = p*V-n*R*T
V=solve(igg,V)
#print V[0].convert()
print "\nEnthalpie Wasser bei 20 °C (iF):"
print (cpWig*293.15*K)
print "\nIsentropenexponent von Luft:"
cvLig = R-cpLig
print (cpLig/cvLig)
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1 kg Luft bei Standardbedingungen:
\newcommand{\Bold}[1]{\mathbf{#1}}0.841523086175943 \, \mbox{meter}^{3}
1 mol Luft:
\newcommand{\Bold}[1]{\mathbf{#1}}0.0243738746680000 \, \mbox{meter}^{3}
Enthalpie Wasser bei 20 °C (iF):
545.259000000000*joule/mole
Isentropenexponent von Luft:
0.13671526803301728
1 kg Luft bei Standardbedingungen:
\newcommand{\Bold}[1]{\mathbf{#1}}0.841523086175943 \, \mbox{meter}^{3}
1 mol Luft:
\newcommand{\Bold}[1]{\mathbf{#1}}0.0243738746680000 \, \mbox{meter}^{3}
Enthalpie Wasser bei 20 °C (iF):
545.259000000000*joule/mole
Isentropenexponent von Luft:
0.13671526803301728
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