361 lines
16 KiB
Plaintext
361 lines
16 KiB
Plaintext
Nitrous oxide !Short name
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10024-97-2 !CAS number
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Dinitrogen monoxide !Full name
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N2O !Chemical formula {N2O}
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R-744A !Synonym
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44.0128 !Molar mass [g/mol]
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182.33 !Triple point temperature [K]
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184.68 !Normal boiling point [K]
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309.52 !Critical temperature [K]
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7245.0 !Critical pressure [kPa]
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10.27 !Critical density [mol/L]
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0.162 !Acentric factor
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0.1608 !Dipole moment [Debye]; Scharpen, L.H., Muenter, J.S., Laurie, V.W., J. Chem. Phys., 53:2513, 1970.
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NBP !Default reference state
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10.0 !Version number
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1070 !UN Number :UN:
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other !Family :Family:
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???? !Heating value (upper) [kJ/mol] :Heat:
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298. !GWP (IPCC 2007) :GWP:
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1S/N2O/c1-2-3 !Standard InChI String :InChi:
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GQPLMRYTRLFLPF-UHFFFAOYSA-N !Standard InChI Key :InChiKey:
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70c6aac0 (propane) !Alternative fluid for mixing rules :AltID:
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e0647c00 !Hash number from InChI Key :Hash:
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!The fluid files contain general information about the fluid in the first 15 to 20 lines, followed by sections for the
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! equations of state, transport equations, and auxiliary equations. Equations of state are listed first. The NIST recommended
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! equations begin with a hash mark (#). The secondary equations begin with the @ symbol. These symbols can be swapped to
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! select a secondary equation as primary and the primary as secondary. The equation of state section also contains auxiliary
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! equations for the ideal gas heat capacity or ideal gas Helmholtz energy. Below the equations of state (both primary and
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! secondary) are the transport equations, first viscosity and then thermal conductivity. These are then followed by the
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! secondary equations if available. The transport section also contains auxiliary equations required to calculate either the
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! dilute gas state or the critical enhancement. At the end of the file are additional but not necessary auxiliary equations,
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! including simple equations for the vapor pressure, saturated liquid and vapor densities, melting line (for some fluids), and
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! sublimation line (for even fewer fluids). This section also contains the equations for dielectric constant and surface
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! tension if available. The sections are divided by different symbols (these being _-+=^*~) to aid the eye in locating a
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! particular section. Secondary equations are indented 10 spaces to avoid confusion with the NIST recommended equations. The
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! end of the fluid file is marked with @END. Anything below that is ignored.
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! compiled by E.W. Lemmon, NIST Physical and Chemical Properties Division, Boulder, Colorado
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! 11-07-01 EWL, Original version.
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! 09-23-01 EWL, Add surface tension fit.
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! 03-13-03 EWL, Update cp0 equation.
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! 07-24-03 MLH, Correct LJ parameters.
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! 08-27-04 EWL, Revise EOS fit.
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! 02-11-06 MLH, Add transport.
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! 07-11-10 CKL, Add ancillary equations.
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! 12-06-12 EWL, Add surface tension coefficients of Mulero et al. (2012).
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! 11-24-17 MLH, updated ecs transport
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! 02-28-18 IHB, Add sublimation line model.
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________________________________________________________________________________
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#EOS !---Equation of state---
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FEQ !Helmholtz equation of state for nitrous oxide of Lemmon and Span (2006).
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:TRUECRITICALPOINT: 309.52 10.290904 !True EOS critical point [K, mol/L] (where dP/dD=0 and d^2P/dD^2=0 at constant T)
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:DOI: 10.1021/je050186n
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Lemmon, E.W. and Span, R.,
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? "Short Fundamental Equations of State for 20 Industrial Fluids,"
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? J. Chem. Eng. Data, 51(3):785-850, 2006. doi: 10.1021/je050186n
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?
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?The uncertainties in the equation of state are 0.1% in density in the
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? liquid and vapor phases between 220 and 300 K, 0.25% at temperatures
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? above 300 K and at temperatures below 220 K, and 0.5% in the
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? critical region, except very close to the critical point. The
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? uncertainty in vapor pressure is 0.2%, that for heat capacities is 3%,
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? and that for the speed of sound in the vapor phase is 0.05% above 220
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? K. The uncertainty in the liquid phase is not known but estimated to be
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? within 5%.
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?
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!```````````````````````````````````````````````````````````````````````````````
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182.33 !Lower temperature limit [K]
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525.0 !Upper temperature limit [K]
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50000.0 !Upper pressure limit [kPa]
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28.12 !Maximum density [mol/L]
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CPP !Pointer to Cp0 model
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44.0128 !Molar mass [g/mol]
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182.33 !Triple point temperature [K]
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87.84 !Pressure at triple point [kPa]
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28.11 !Density at triple point [mol/L]
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184.68 !Normal boiling point temperature [K]
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0.162 !Acentric factor
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309.52 7245.0 10.27 !Tc [K], pc [kPa], rhoc [mol/L]
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309.52 10.27 !Reducing parameters [K, mol/L]
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8.314472 !Gas constant [J/mol-K]
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12 4 0 0 0 0 0 0 0 0 0 0 !# terms and # coefs/term for normal terms, Gaussian terms, and Gao terms
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0.88045 0.25 1. 0. !a(i),t(i),d(i),l(i)
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-2.4235 1.25 1. 0.
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0.38237 1.5 1. 0.
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0.068917 0.25 3. 0.
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0.00020367 0.875 7. 0.
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0.13122 2.375 1. 1.
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0.46032 2.0 2. 1.
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-0.0036985 2.125 5. 1.
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-0.23263 3.5 1. 2.
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-0.00042859 6.5 1. 2.
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-0.042810 4.75 4. 2.
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-0.023038 12.5 2. 3.
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#AUX !---Auxiliary function for Cp0
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CPP !Ideal gas heat capacity function for nitrous oxide of Lemmon and Span (2006).
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Lemmon, E.W. and Span, R., 2006.
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?
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!```````````````````````````````````````````````````````````````````````````````
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0. !
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10000. !
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0. !
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0. !
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1.0 8.314472 !Reducing parameters for T, Cp0
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1 3 0 0 0 0 0 !Nterms: polynomial, exponential, cosh, sinh
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3.5 0.0
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2.1769 879.0
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1.6145 2372.0
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0.48393 5447.0
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#AUX !---Auxiliary function for PX0
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PX0 !Helmholtz energy ideal-gas function for nitrous oxide of Lemmon and Span (2006).
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Lemmon, E.W. and Span, R., 2006.
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?
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!```````````````````````````````````````````````````````````````````````````````
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1 2 3 0 0 0 0 0 !Nterms: ai*log(tau**ti); ai*tau**ti; ai*log(1-exp(bi*tau))
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2.5 1.0 !ai, ti for [ai*log(tau**ti)] terms
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-4.4262724194662564 0.0 !aj, ti for [ai*tau**ti] terms
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4.3120468016770888 1.0 !aj, ti for [ai*tau**ti] terms
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2.1769 879.0 !aj, ti for [ai*log(1-exp(-ti/T)] terms
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1.6145 2372.0
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0.48393 5447.0
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#AUX !---Auxiliary function for PH0
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PH0 !Ideal gas Helmholtz form for nitrous oxide.
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Lemmon, E.W. and Span, R., 2006.
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?
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!```````````````````````````````````````````````````````````````````````````````
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0. !
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10000. !
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0. !
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0. !
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1 2 3 0 0 0 0 0 !Nterms: ai*log(tau**ti); ai*tau**ti; ai*log(1-exp(bi*tau)); cosh; sinh
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2.5 1.0 !ai, ti for [ai*log(tau**ti)] terms
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-4.4262736272 0.0 !aj, ti for [ai*tau**ti] terms
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4.3120475243 1.0
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2.1769 -2.8398811062 !aj, ti for [ai*log(1-exp(ti*tau)] terms
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1.6145 -7.6634789351
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0.48393 -17.5982165934
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++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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#TRN !---ECS Transport---
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ECS !Extended Corresponding States model (Nitrogen reference); fitted to extremely limited data for nitrous oxide.
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:DOI: 10.6028/NIST.IR.8209
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?
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?```````````````````````````````````````````````````````````````````````````````
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?*** ESTIMATION METHOD *** NOT STANDARD REFERENCE QUALITY ***
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?Huber, M.L., "Models for the Viscosity, Thermal Conductivity, and Surface Tension
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? of Selected Pure Fluids as Implemented in REFPROP v10.0," NISTIR 8209, 2018.
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? doi: 10.6028/NIST.IR.8209
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?
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?VISCOSITY
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? Uncertainty in viscosity estimated as <10% based on comparisons with Horvath, A.L., "Physical Properties of Inorganic Compounds," Crane Russak, New York, 1975.
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?
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?THERMAL CONDUCTIVITY
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? Uncertainty in thermal conductivity estimated as <10% based on comparisons with
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? Richter, G.N., Sage, B.H., "Thermal Conductivity of Fluids. Nitrous Oxide," J. Chem. Eng. Data, 8(2):221, 1963. doi: 10.1021/je60017a024
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?
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?The Lennard-Jones parameters were taken from Reid, R.C., Prausnitz, J.M., and Poling, B.E., "The Properties of Gases and Liquids," 4th edition, New York, McGraw-Hill Book Company, 1987.
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?
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?Estimated uncertainty is 10%.
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?
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!```````````````````````````````````````````````````````````````````````````````
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182.33 !Lower temperature limit [K]
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525.0 !Upper temperature limit [K]
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50000.0 !Upper pressure limit [kPa]
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28.12 !Maximum density [mol/L]
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FEQ NITROGEN.FLD
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VS1 !Model for reference fluid viscosity
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TC1 !Model for reference fluid thermal conductivity
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NUL !Large molecule identifier
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1 !Lennard-Jones flag (0 or 1) (0 => use estimates)
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0.3828 !Lennard-Jones coefficient sigma [nm] for ECS method
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232.4 !Lennard-Jones coefficient epsilon/kappa [K] for ECS method
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3 0 0 !Number of terms in f_int term in Eucken correlation, spare1, spare2
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5.15648e-4 0. 0. 0. !Coefficient, power of T, spare1, spare2
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2.85508e-6 1. 0. 0. !Coefficient, power of T, spare1, spare2
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-2.46391e-9 2. 0. 0. !Coefficient, power of T, spare1, spare2
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2 0 0 !Number of terms in psi (visc shape factor): poly,spare1,spare2
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0.88769 0. 0. 0. !Coefficient, power of Tr, power of Dr, spare
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0.0214265 0. 1. 0. !Coefficient, power of Tr, power of Dr, spare
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2 0 0 !Number of terms in chi (t.c. shape factor): poly,spare1,spare2
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0.923824 0. 0. 0. !Coefficient, power of Tr, power of Dr, spare
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0.03315898 0. 1. 0. !Coefficient, power of Tr, power of Dr, spare
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TK3 !Pointer to critical enhancement auxiliary function
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#AUX !---Auxiliary function for the thermal conductivity critical enhancement
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TK3 !Simplified thermal conductivity critical enhancement model for nitrous oxide of Perkins et al. (2013).
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Perkins, R.A., Sengers, J.V., Abdulagatov, I.M., and Huber, M.L.,
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? "Simplified Model for the Critical Thermal-Conductivity Enhancement in Molecular Fluids,"
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? Int. J. Thermophys., 34(2):191-212, 2013. doi: 10.1007/s10765-013-1409-z
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?
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!```````````````````````````````````````````````````````````````````````````````
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0. !
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10000. !
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0. !
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0. !
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9 0 0 0 !# terms: CO2-terms, spare, spare, spare
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1.0 1.0 1.0 !Reducing parameters for T, rho, tcx [mW/(m-K)]
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0.63 !Nu (universal exponent)
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1.239 !Gamma (universal exponent)
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1.02 !R0 (universal amplitude)
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0.063 !Z (universal exponent--not used for t.c., only viscosity)
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1.0 !C (constant in viscosity eqn = 1/[2 - (alpha + gamma)/(2*nu)], but often set to 1)
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0.159e-9 !Xi0 (amplitude) [m]
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0.057 !Gam0 (amplitude) [-]
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0.446e-9 !Qd_inverse (modified effective cutoff parameter) [m]; estimated-not fitted to data
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464.28 !Tref (reference temperature)=1.5*Tc [K]
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#STN !---Surface tension---
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ST1 !Surface tension model for nitrous oxide of Mulero et al. (2012).
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:DOI: 10.1063/1.4768782
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Mulero, A., Cachadiña, I., and Parra, M.I.,
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? "Recommended Correlations for the Surface Tension of Common Fluids,"
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? J. Phys. Chem. Ref. Data, 41(4), 043105, 2012. doi: 10.1063/1.4768782
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?
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!```````````````````````````````````````````````````````````````````````````````
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0. !
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10000. !
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0. !
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0. !
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1 !Number of terms in surface tension model
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309.52 !Critical temperature used in fit (dummy)
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0.07087 1.204 !Sigma0 and n
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#SBL !---Sublimation line---
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SB2 !Sublimation line model for nitrous oxide of Bell (2018).
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:DOI:
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Bell, I.H., 2018.
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?
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?Fit of the sublimation data from TDE for:
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? Blue, R.W., Giauque, W.F., "The Heat Capacity and Vapor Pressure of Solid and Liquid Nitrous Oxide the Entropy from its Band Spectrum," J. Am. Chem. Soc., 57:991-997, 1935.
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? Atake, T., Chihara, H., Bull. Chem. Soc. Jpn., 47:2126-36, 1974.
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? Terlain, A., Pressions de Sublimation de N2O Entre 125 K et 147 K, J. Chim. Phys. Phys.-Chim. Biol., 80:805-808, 1983.
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?
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!```````````````````````````````````````````````````````````````````````````````
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0.0 !Lower temperature limit [K]
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182.33 !Upper temperature limit [K]
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0. !
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0. !
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1.0 1000.0 !Reducing temperature and pressure
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4 0 0 0 0 0 !Number of terms in sublimation line equation
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1.37978754e1 0.0 !Coefficients and exponents
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-3.18120979e3 -1.0
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6.34515147e4 -2.0
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-4.18996537e6 -3.0
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#PS !---Vapor pressure---
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PS5 !Vapor pressure equation for nitrous oxide of Lemmon (2010).
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Lemmon, C.K. and Lemmon, E.W., 2010.
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?
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?Functional Form: P=Pc*EXP[SUM(Ni*Theta^ti)*Tc/T] where Theta=1-T/Tc, Tc and Pc
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? are the reducing parameters below, which are followed by rows containing Ni and ti.
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?
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!```````````````````````````````````````````````````````````````````````````````
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0. !
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10000. !
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0. !
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0. !
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309.52 7245.0 !Reducing parameters
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5 0 0 0 0 0 !Number of terms in equation
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-6.9078 1.0
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2.6620 1.5
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-2.2386 1.9
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-3.8002 4.8
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0.76922 5.8
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#DL !---Saturated liquid density---
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DL1 !Saturated liquid density equation for nitrous oxide of Lemmon (2010).
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Lemmon, C.K. and Lemmon, E.W., 2010.
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?
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?Functional Form: D=Dc*[1+SUM(Ni*Theta^ti)] where Theta=1-T/Tc, Tc and Dc are
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? the reducing parameters below, which are followed by rows containing Ni and ti.
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?
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!```````````````````````````````````````````````````````````````````````````````
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0. !
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10000. !
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0. !
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0. !
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309.52 10.27 !Reducing parameters
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5 0 0 0 0 0 !Number of terms in equation
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6.7919 0.47
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-16.069 0.72
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25.632 1.0
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-20.755 1.30
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7.1963 1.60
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#DV !---Saturated vapor density---
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DV3 !Saturated vapor density equation for nitrous oxide of Lemmon (2010).
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?
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?```````````````````````````````````````````````````````````````````````````````
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?Lemmon, C.K. and Lemmon, E.W., 2010.
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?
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?Functional Form: D=Dc*EXP[SUM(Ni*Theta^ti)] where Theta=1-T/Tc, Tc and Dc are
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? the reducing parameters below, which are followed by rows containing Ni and ti.
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?
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!```````````````````````````````````````````````````````````````````````````````
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0. !
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10000. !
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0. !
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0. !
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309.52 10.27 !Reducing parameters
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6 0 0 0 0 0 !Number of terms in equation
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-3.1287 0.409
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-77.651 1.91
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214.42 2.33
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-478.09 3.0
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751.85 3.6
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-462.79 4.0
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@END
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c 1 2 3 4 5 6 7 8
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c2345678901234567890123456789012345678901234567890123456789012345678901234567890
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