Files
CoolProp/dev/fluids/Helium.json
Ian Bell daed4b862b NBP reference states are now set
Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
2014-06-03 12:27:30 +02:00

351 lines
7.4 KiB
JSON

{
"ALIASES": [
"helium",
"HELIUM",
"He"
],
"ANCILLARIES": {
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"Tmax": 5.195299999999987,
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"description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))",
"max_abserror_percentage": 0.009046990251626585,
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],
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],
"type": "pL",
"using_tau_r": true
},
"pV": {
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"description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))",
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],
"type": "pV",
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},
"rhoL": {
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"description": "rho' = rhoc*(1+sum(n_i*theta^t_i))",
"max_abserror_percentage": 0.01468301830127583,
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8.213,
9.042
],
"type": "rhoLnoexp",
"using_tau_r": false
},
"rhoV": {
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"description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))",
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],
"type": "rhoV",
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},
"surface_tension": {
"BibTeX": "Mulero-JPCRD-2012",
"Tc": 5.1953,
"a": [
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0.001889,
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],
"description": "sigma = sum(a_i*(1-T/Tc)^n_i)",
"n": [
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2.468,
2.661
]
}
},
"CAS": "7440-59-7",
"CRITICAL": {
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"T_units": "K",
"p": 227600.0,
"p_units": "Pa",
"rhomolar": 18130.0,
"rhomolar_units": "mol/m^3"
},
"ENVIRONMENTAL": {
"ASHRAE34": "A1",
"FH": 0,
"GWP100": -1.0,
"GWP20": -1.0,
"GWP500": -1.0,
"HH": 0,
"Name": "Helium",
"ODP": -1.0,
"PH": 0
},
"EOS": [
{
"BibTeX_CP0": "",
"BibTeX_EOS": "OrtizVega-2010",
"T_max": 2000,
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"accentric": -0.385,
"accentric_units": "-",
"alpha0": [
{
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"type": "IdealGasHelmholtzLead"
},
{
"a": 1.5,
"type": "IdealGasHelmholtzLogTau"
},
{
"a1": -0.0278608575394308,
"a2": -0.00835828466224539,
"reference": "NBP",
"type": "IdealGasHelmholtzEnthalpyEntropyOffset"
}
],
"alphar": [
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],
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},
{
"beta": [
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0.147,
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0.701,
0.21,
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],
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2,
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"type": "ResidualHelmholtzGaussian"
}
],
"gas_constant": 8.314472,
"gas_constant_units": "J/mol/K",
"molar_mass": 0.004002602,
"molar_mass_units": "kg/mol",
"p_max": 1000000000,
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"pseudo_pure": false,
"ptriple": 5042.757189,
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"reducing_state": {
"T": 5.1953,
"T_units": "K",
"p": 227600,
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"rhomolar": 17383.7,
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},
"rhoLtriple": 36459.45454859136,
"rhoLtriple_units": "mol/m^3",
"rhoVtriple": 293.9108313933456,
"rhoVtriple_units": "mol/m^3"
}
],
"NAME": "Helium",
"REFPROP_NAME": "HELIUM",
"TRANSPORT": {
"conductivity": {
"BibTeX": "HANDS-CRYO-1981",
"hardcoded": "Helium"
},
"viscosity": {
"BibTeX": "ARP-NIST-1998",
"hardcoded": "Helium"
}
}
}