def get_fluid_strings(mix=False):
if mix:
fluids_in = ["Propane[0.5]&Ethane[0.5]", "ISOBUTAN[0.8]&PROPANE[0.2]", "R32[0.697615]&R125[0.302385]"]
else:
fluids_in = ["Water", "R134a", "Air"]
fluids = []
for fld in fluids_in:
for bac in ["HEOS", "REFPROP"]:
if bac=="REFPROP" and not mix:
fluids.append(bac+"::"+get_fluid_param_string(fld,"REFPROP_name"))
else:
fluids.append(bac+"::"+fld)
return fluids
def get_fluid_strings(mix=False):
if mix:
fluids_in = [
"Propane[0.5]&Ethane[0.5]", "ISOBUTAN[0.8]&PROPANE[0.2]",
"R32[0.697615]&R125[0.302385]"
]
else:
fluids_in = ["Water", "R134a", "Air"]
fluids = []
for fld in fluids_in:
for bac in ["HEOS", "REFPROP"]:
if bac == "REFPROP" and not mix:
fluids.append(bac + "::" +
get_fluid_param_string(fld, "REFPROP_name"))
else:
fluids.append(bac + "::" + fld)
return fluids
epsilon = 0
beta = 0
gamma = 0
else:
i, d, t, n, eta, epsilon, beta, gamma = vals
D.append(int(d))
T.append(float(t))
N.append(float(n))
ETA.append(float(eta))
EPSILON.append(float(epsilon))
BETA.append(float(beta))
GAMMA.append(float(gamma))
name1, name2 = names.split('/')
CAS1 = get_fluid_param_string(name1, 'CAS')
CAS2 = get_fluid_param_string(name2, 'CAS')
print template.format(Name1=name1,
Name2=name2,
CAS1=CAS1,
CAS2=CAS2,
d=str(D),
t=str(T),
n=str(N),
eta=str(ETA),
epsilon=str(EPSILON),
beta=str(BETA),
gamma=str(GAMMA))
from scipy.optimize import fsolve #see example page 33
func = lambda x: [x[0]**2-2*x[1]-2, x[0]+x[1]**2-1]
x =fsolve(func, [0,0])
print('fsolve x =',x)
print('fsolve f(x) = ', func(x))
print(' ')
print(1e-5)
print(1E-5)
print(' ')
print ('Molar = ', PropsSI('M','R410A')) #,'T',298.15,'P',101325
print ('surface tension = ', PropsSI('I','P',250000,'Q',0,'R407C')) #[N/m]
print ('surface tension = ', PropsSI('I','P',250000,'Q',0.5,'R407C')) #[N/m]
print ('surface tension = ', PropsSI('I','P',250000,'Q',1,'R407C')) #[N/m]
print('fluid string:',get_fluid_param_string('water','pure'))
#print('new surface tension method:',saturation_ancillary('R407C','I',1,'T', 250))
print ('T_HR = ', HAPropsSI('T','P',101325.0,'H',37972.967209365510,'R',1)-273.15,'degree C')
print ('P_sat = ', PropsSI('Q','P', 445100,'H',244044.447331,'R404A'),'Pa')
print ('P_sat = ', PropsSI('P','T', 323.15,'Q',0,'R407C'),'Pa')
AS = CoolProp.AbstractState("TTSE&HEOS", "R410A")
#print (AS.get_mass_fractions())
#AS.set_mass_fractions([0.2])
rhosatV = 36.4720363389
Tdew = 278.688177082
AS.update(CP.DmassT_INPUTS,rhosatV,Tdew)
#AS.update(CP.PQ_INPUTS,250000,0)
print('density=',AS.saturated_liquid_keyed_output(CP.iHmass))
print (AS.hmass())
print ('h_props = ', PropsSI('H','P', 120000,'T',300,'INCOMP::MEG-20%'),'J/kg')
'iC4H10': 'IsoButane',
'nC5H12': 'n-Pentane',
'iC5H12': 'Isopentane',
'nC6H14': 'n-Hexane',
'nC7H16': 'n-Heptane',
'nC8H18': 'n-Octane',
'nC9H20': 'n-Nonane',
'nC10H22': 'n-Decane',
}
F_factors = {}
lines = open('KunzWagner2012_TableA6.txt','r').readlines()
for line in lines:
names,F = line.strip().split(' ')
name1,name2 = names.split('/')
CAS1 = get_fluid_param_string(name1,'CAS')
CAS2 = get_fluid_param_string(name2,'CAS')
F_factors[(CAS1,CAS2)] = F
F_factors[(CAS2,CAS1)] = F
lines = open('KunzWagner2012_TableA8.txt','r').readlines()
template = """{{"Name1" : "{Name1:s}",
"Name2" : "{Name2:s}",
"CAS1" : "{CAS1:s}",
"CAS2" : "{CAS2:s}",
"betaV" : {betaV:s},
"gammaV" : {gammaV:s},
"betaT" : {betaT:s},
"gammaT" : {gammaT:s},
"F" : {F:s}