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Available Fluids in the ThermophysicalData:-CoolProp Package

Description

"Native" pure and pseudo-pure fluids

Mixtures

Incompressible fluids

IF97 Steam/Water Properties

Humid air

References

Description

•	This help page describes the fluids available in the CoolProp library (CoolProp license), and thus in Maple's ThermophysicalData package.

•	Most commands in the ThermophysicalData package accept a name or string to describe a fluid; you can use a name or a string interchangeably.

•

In some cases (for example, mixtures and incompressible fluids), you will need to include characters in the name that are not, by default, part of Maple names. In these cases, it is easiest to use a string for the fluid. The same is true if you have already assigned a variable with the same name. If you prefer to use names in these situations, use left single quotes to get around the use of non-standard characters and use right single quotes to keep a variable from evaluating.

"Native" pure and pseudo-pure fluids

•	The following pure and pseudo-pure fluids are understood natively by CoolProp. Each entry in the table below is a list of equivalent names for a fluid; each such list links to a page on the CoolProp website (www.coolprop.org) that has more detail about the fluid.

Pure and pseudo-pure fluid table

"1Butene", "1BUTENE", "1-BUTENE", "Butene"	"acetone", "ACETONE"
"air", "AIR", "R729"	"NH3", "ammonia", "R717", "AMMONIA"
"argon", "ARGON", "R740", "Ar"	"benzene", "BENZENE"
"R744", "co2", "CO2", "carbondioxide", "CARBONDIOXIDE"	"CO", "CARBONMONOXIDE"
"COS", "CARBONYLSULFIDE"	"Cyclohexane", "CYCLOHEXANE", "CYCLOHEX"
"cyclopropane", "Cyclopropane", "CYCLOPROPANE", "CYCLOPRO"	"CycloPentane", "cyclopentane", "CYCLOPENTANE", "CYCLOPEN"
"Octamethylcyclotetrasiloxane", "OCTAMETHYLCYCLOTETRASILOXANE"	"Decamethylcyclopentasiloxane", "DECAMETHYLCYCLOPENTASILOXANE"
"Dodecamethylcyclohexasiloxane", "DODECAMETHYLCYCLOHEXASILOXANE"	"deuterium", "DEUTERIUM", "D2"
"DICHLOROETHANE", "1,2-dichloroethane", "1,2-DICHLOROETHANE"	"DEE", "DiethylEther"
"DMC", "dimethylcarbonate", "DIMETHYLCARBONATE"	"DIMETHYLETHER", "DME"
"ethane", "ETHANE", "R170", "n-C2H6"	"C2H6O", "ethanol", "ETHANOL"
"ethylbenzene", "ETHYLBENZENE", "EBENZENE"	"ethylene", "ETHYLENE", "R1150"
"ETHYLENEOXIDE"	"fluorine", "FLUORINE"
"HFE-143m", "HFE143M", "HFE-143M", "RE143A", "RE143a"	"D2O", "HEAVYWATER"
"helium", "HELIUM", "He", "R704"	"hydrogen", "HYDROGEN", "H2", "R702"
"HydrogenChloride", "HYDROGENCHLORIDE", "HCl", "HCL"	"H2S", "HYDROGENSULFIDE"
"isobutane", "Isobutane", "ISOBUTANE", "R600A", "R600a", "ISOBUTAN"	"Isobutene", "ISOBUTENE", "IBUTENE"
"ihexane", "ISOHEXANE"	"ipentane", "R601a", "ISOPENTANE", "IPENTANE"
"krypton", "KRYPTON"	"Decamethyltetrasiloxane", "DECAMETHYLTETRASILOXANE"
"Dodecamethylpentasiloxane", "DODECAMETHYLPENTASILOXANE"	"Tetradecamethylhexasiloxane", "TETRADECAMETHYLHEXASILOXANE"
"Octamethyltrisiloxane", "OCTAMETHYLTRISILOXANE"	"Hexamethyldisiloxane", "HEXAMETHYLDISILOXANE"
"CH4", "methane", "METHANE", "R50", "n-C1H4"	"methanol", "METHANOL"
"METHYLLINOLEATE", "MLINOLEA"	"METHYLLINOLENATE", "MLINOLEN"
"METHYLOLEATE", "MOLEATE"	"METHYLPALMITATE", "MPALMITA"
"METHYLSTEARATE", "MSTEARAT"	"neon", "NEON", "R720"
"neopentn", "NEOPENTANE"	"nitrogen", "NITROGEN", "N2", "R728"
"N2O", "NITROUSOXIDE"	"Novec1230", "NOVEC649"
"orthodeuterium", "ORTHODEUTERIUM"	"Orthohydrogen", "orthohydrogen", "ORTHOHYDROGEN", "ORTHOHYD"
"oxygen", "OXYGEN", "O2", "R732"	"paradeuterium", "PARADEUTERIUM"
"Parahydrogen", "parahydrogen", "PARAHYDROGEN", "PARAHYD"	"propylene", "PROPYLENE", "PROPYLEN", "R1270"
"propyne", "PROPYNE"	"R11"
"R113"	"R114"
"R115"	"R116"
"R12"	"R123"
"R1233zdE", "R1233ZDE", "R1233ZD(E)", "R1233ZD"	"R1234YF"
"R1234ZE", "R1234ZEE", "R1234zeE", "R1234ZE(E)"	"R1234ZE(Z)", "R1234ZEZ"
"R124"	"R1243ZF"
"R125"	"R13"
"R134A"	"CF3I"
"R14"	"R141B"
"R142B"	"R143A"
"R152a"	"Fluoroethane", "FLUOROETHANE"
"R21"	"R218"
"R22"	"R227ea"
"R23"	"R236ea"
"R236fa"	"R245CA"
"R245FA"	"R32"
"R365mfc"	"MethylChloride"
"R404a"	"R407c"
"R41"	"R410a"
"R507a"	"RC318"
"SES36"	"SO2", "SULFURDIOXIDE"
"SULFURHEXAFLUORIDE", "SF6"	"toluene", "TOLUENE"
"water", "WATER", "H2O", "h2o", "R718"	"Xe", "xenon", "XENON"
"Cis-2-Butene", "CIS-2-BUTENE", "C2BUTENE"	"mXylene", "m-xylene", "M-XYLENE", "MC8H10"
"nButane", "butane", "Butane", "BUTANE", "N-BUTANE", "R600", "NC4H10", "n-C4H10"	"Decane", "decane", "DECANE", "N-DECANE", "NC10H22", "n-C10H22"
"nDodecane", "Dodecane", "DODECANE", "N-DODECANE", "C12", "NC12H26", "n-C12H26"	"nHeptane", "Heptane", "HEPTANE", "N-HEPTANE", "NC7H16", "n-C7H16"
"nHexane", "Hexane", "HEXANE", "N-HEXANE", "NC6H14", "n-C6H14"	"nonane", "Nonane", "NONANE", "N-NONANE", "NC9H20", "n-C9H20"
"nOctane", "Octane", "OCTANE", "N-OCTANE", "NC8H18", "n-C8H18"	"nPentane", "Pentane", "PENTANE", "N-PENTANE", "R601", "NC5H12", "n-C5H12"
"Propane", "propane", "R290", "C3H8", "PROPANE", "N-PROPANE", "NC3H8", "n-C3H8"	"Undecane", "UNDECANE", "N-UNDECANE", "C11", "NC11H24", "n-C11H24"
"oXylene", "o-xylene", "O-XYLENE", "OC8H10"	"pXylene", "p-xylene", "P-XYLENE", "PC8H10"
"Trans-2-Butene", "TRANS-2-BUTENE", "T2BUTENE"

Examples

>	$with (ThermophysicalData)$

$[Atmosphere, Chemicals, CoolProp, PHTChart, Property, PsychrometricChart, TemperatureEntropyChart]$

(1)

>	$with (CoolProp)$

$[HAPropsSI, PhaseSI, Property, Props1SI, PropsSI]$

(2)

•	The following example finds the boiling point of water at a pressure of 1 atmosphere.

Find the temperature at which water reaches saturation.

>	$boiling ≔ Property (temperature, water, pressure = 1 Unit (atm), Q = 0)$

$boiling ≔ 373.1242958 ⟦K⟧$

(3)

Now we can use the convert/temperature command to find this temperature in degrees Celsius and Fahrenheit.

>	$convert (boiling, temperature, Celsius)$

$99.9742958 ⟦°C⟧$

(4)

>	$convert (boiling, temperature, Fahrenheit)$

$211.9537324 ⟦°F⟧$

(5)

•	This is the energy required to heat ethanol from $290 ⟦K⟧$ to $320 ⟦K⟧$ at atmospheric pressure.

>	$Cp ≔ T \mapsto Property (C, ethanol, pressure = 101325, temperature = T)$

$Cp ≔ T \mapsto CoolProp :- Property (C, ethanol, pressure = 101325, temperature = T)$

(6)

>	$infolevel [`evalf/int`] ≔ 10 &colon;$

>	$energy ≔ int (Cp, 290 .. 320, numeric)$

evalf/int/control: integrating on 290 .. 320 the integrand

evalf/int/control:   tolerance = .5000000000e-9; method = _DEFAULT; method options = []Control:   Entering NAGInt
Control:   trying d01ajc (nag_1d_quad_gen)
d01ajc:   epsabs=.500000000000000e-12; epsrel=.5000000000e-9; max_num_subint=200
d01ajc:   procedure for evaluation is:
T -> ThermophysicalData:-CoolProp:-Property("C","ethanol",pressure = 101325,temperature = T)
d01ajc:   "trying evalhf callbacks"
Control:   d01ajc failed
evalf/int/control:   error from Control was:
"module member referencing is not supported in evalhf"
evalf/int/control:   NAG failed   result = result
evalf/int/control:   procedure for evaluation is:
T -> ThermophysicalData:-CoolProp:-Property("C","ethanol",pressure = 101325,temperature = T)
evalf/int/control:   "applying double-exponential method"
evalhf mode unsuccessful -- retry in software floats
evalhf error was:
"module member referencing is not supported in evalhf"
procedure for evaluation is:
T -> ThermophysicalData:-CoolProp:-Property("C","ethanol",pressure = 101325,temperature = T)
evalf/int/quadexp:   "applying double-exponential method"
evalf/int/samp_quad:   Delta[1] = 81818.37518016
evalf/int/samp_quad:   Delta[2] = -12682.47458184
evalf/int/samp_quad:   result = 74804.50122700, HError = 12682.47458184
evalf/int/samp_quad:   Delta[3] = -49.57812083
evalf/int/samp_quad:   result = 74754.92310617, HError = 49.57812083
evalf/int/samp_quad:   Delta[4] = .7624e-4
evalf/int/samp_quad:   result = 74754.92318241, HError = .7624e-4
evalf/int/samp_quad:   Delta[5] = 0.
evalf/int/samp_quad:   result = 74754.92318241, HError = 0.
evalf/int/samp_quad:   result = 74754.92318241, HError = 0.
evalf/int/quadexp:   errest = .2762595095616e-5, AbsError = .5000000000000e-12, RelError = .5000000000e-9
From quadexp, result = 74754.92318241   integrand evals = 65   error = .2762595095616e-5
tolerance = .3737746159120e-4

$T \mapsto CoolProp :- Property (C, ethanol, pressure = 101325, temperature = T)$

$energy ≔ 74754.92318$

(7)

Mixtures

•	The CoolProp library can deal with some mixtures between its fluids. For detailed information, see http://www.coolprop.org/fluid_properties/Mixtures.html.

Predefined mixtures

•	There are some predefined mixtures, and some where the user can specify the proportions. The predefined mixtures are listed in the table below; their names all end in .mix. Each mixture can also be given as an all uppercase string (or name).

Predefined mixture table

Air.mix	Amarillo.mix	Ekofisk.mix	GulfCoast.mix
GulfCoastGas(NIST1).mix	HighCO2.mix	HighN2.mix	NaturalGasSample.mix
R401A.mix	R401B.mix	R401C.mix	R402A.mix
R402B.mix	R403A.mix	R403B.mix	R404A.mix
R405A.mix	R406A.mix	R407A.mix	R407B.mix
R407C.mix	R407D.mix	R407E.mix	R407F.mix
R408A.mix	R409A.mix	R409B.mix	R410A.mix
R410B.mix	R411A.mix	R411B.mix	R412A.mix
R413A.mix	R414A.mix	R414B.mix	R415A.mix
R415B.mix	R416A.mix	R417A.mix	R417B.mix
R417C.mix	R418A.mix	R419A.mix	R419B.mix
R420A.mix	R421A.mix	R421B.mix	R422A.mix
R422B.mix	R422C.mix	R422D.mix	R422E.mix
R423A.mix	R424A.mix	R425A.mix	R426A.mix
R427A.mix	R428A.mix	R429A.mix	R430A.mix
R431A.mix	R432A.mix	R433A.mix	R433B.mix
R433C.mix	R434A.mix	R435A.mix	R436A.mix
R436B.mix	R437A.mix	R438A.mix	R439A.mix
R440A.mix	R441A.mix	R442A.mix	R443A.mix
R444A.mix	R444B.mix	R445A.mix	R446A.mix
R447A.mix	R448A.mix	R449A.mix	R449B.mix
R450A.mix	R451A.mix	R451B.mix	R452A.mix
R453A.mix	R454A.mix	R454B.mix	R500.mix
R501.mix	R502.mix	R503.mix	R504.mix
R507A.mix	R508A.mix	R508B.mix	R509A.mix
R510A.mix	R511A.mix	R512A.mix	R513A.mix
TypicalNaturalGas.mix

Custom mixtures

•

A fluid mixture where the user can specify the proportions is specified as, for example, '"Water[0.9]&Ethanol[0.1]"'; that is, the components are separated by ampersands, and each component is followed by the molar proportion in square brackets. If the sum of the proportions is greater than 1, they are scaled to 1.

•	The inputs given must be any two of the following three: pressure (P), temperature (T), and mass vapor quality (Q).

•	For any mixture, the CoolProp library must know how to compute with each pair of fluids in the mixture. The following table indicates which pairs of fluids are suitable; a green dot means the given row and column can be combined.

Examples

•	Determine the density of air at 1 atmosphere and 300 kelvin.

>	PropsSI(D, P, Unit(atm), T, 300*Unit(K), "Air.mix");

$1.176692290 ⟦\frac{kg}{m^{3}}⟧$

(8)

•	Consider a mixture of refrigerants R32, R125, and R134a, in molar proportions 1:1:2. At what pressure do we get a vapor quality of one half, given that the temperature is -5 degrees Celsius?

>	PropsSI(P, Q, 1/2, T, -5*Unit(degC), "R32[0.25]&R125[0.25]&R134a[0.5]");

$399877.0618 ⟦Pa⟧$

(9)

Incompressible fluids

•	There is a separate syntax for using a library of incompressible fluids that is part of the CoolProp library. These are selected by starting the fluid description with the string "INCOMP::".

•	The incompressible fluids library supports pure fluids, some binary mixtures specified by mass fractions, and some binary mixtures specified by volume fractions.

•

Incompressible fluids only allow for a limited subset of input variables. The following input pairs are supported: pressure (P) and temperature (T), pressure and entropy (H), pressure and mass density (D), and pressure and mass specific entropy (S). Some fluids also provide saturation state information; that is, you can specify that the mass vapor quality Q=0 and your choice of temperature.

•	All choices of inputs function by specifying pressure and temperature repeatedly, internally, which makes this combination by far the fastest.

•	The possible output quantities are temperature, pressure, density, heat capacity, internal energy, enthalpy, entropy, viscosity, thermal conductivity, and the minimum and maximum temperature at which the calculations are expected to work for the given fluid.

•

For the binary mixtures, depending on the mixture, you have to supply either the mass fraction or the volume fraction as an additional parameter. This information can be found in the tables below. There are two different equivalent syntaxes for this: one can either append a dash and the percentage of the substance other than water; or append the fraction as a number between 0 and 1, enclosed in square brackets. For example, "INCOMP::LiBr-23%" and "INCOMP::LiBr[0.23]" specify the same mixture.

Incompressible fluid tables

•	This table describes the pure incompressible fluids.

Name	Description	Temperature range (Celsius)
AS10	Aspen Temper -10, Potassium acetate/formate	-10 .. 30
AS20	Aspen Temper -20, Potassium acetate/formate	-20 .. 30
AS30	Aspen Temper -30, Potassium acetate/formate	-30 .. 30
AS40	Aspen Temper -40, Potassium acetate/formate	-40 .. 30
AS55	Aspen Temper -55, Potassium acetate/formate	-55 .. 30
DEB	Diethylbenzene mixture - Dowtherm J	-80 .. 100
DSF	Dynalene SF	0 .. 315
DowJ	DowthermJ	-80 .. 345
DowJ2	Dowtherm J, Diethylbenzene mixture	-73 .. 315
DowQ	DowthermQ	-35 .. 360
DowQ2	Dowtherm Q, Diphenylethane/alkylated aromatics	-35 .. 330
HC10	Dynalene HC10	-10 .. 218
HC20	Dynalene HC20	-20 .. 210
HC30	Dynalene HC30	-30 .. 210
HC40	Dynalene HC40	-40 .. 200
HC50	Dynalene HC50	-50 .. 210
HCB	Hydrocarbon blend - Dynalene MV	-80 .. 100
HCM	Hydrocarbon mixture - Gilotherm D12	-80 .. 100
HFE	Hydrofluoroether - HFE-7100 3M Novec	-80 .. 100
HFE2	HFE-7100, Hydrofluoroether	-80 .. 64
HY20	HYCOOL 20, Potassium formate	-20 .. 50
HY30	HyCool 30, Potassium formate	-30 .. 50
HY40	HyCool 40, Potassium formate	-40 .. 20
HY45	HyCool 45, Potassium formate	-45 .. 20
HY50	HyCool 50, Potassium formate	-50 .. 20
NBS	NBS, Water	1 .. 100
NaK	Nitrate salt, 0.6 NaNO3 and 0.4 KNO3	300 .. 600
PBB	Pirobloc HTF-BASIC	50 .. 300
PCL	Paracryol, Aliphatic Hydrocarbon	-40 .. 180
PCR	Paratherm CR	-100 .. 220
PGLT	Paratherm GLT	-15 .. 315
PHE	Paratherm HE	0 .. 330
PHR	Paratherm HR	-15 .. 370
PLR	Paratherm LR	-85 .. 230
PMR	Paratherm MR	-40 .. 315
PMS1	Polydimethylsiloxan 1 - Baysilone KT3	-80 .. 100
PMS2	Polydimethylsiloxan 2 - Syltherm XLT	-80 .. 100
PNF	Paratherm NF	-10 .. 315
PNF2	Paratherm NF, Hydrotreated mineral oil	-10 .. 320
S800	Syltherm 800	-40 .. 398
SAB	Synthetic alkyl benzene - Marlotherm X	-80 .. 100
T66	Therminol66	0 .. 380
T72	Therminol72	-10 .. 380
TCO	Citrus oil terpene - d-Limonene	-80 .. 100
TD12	TherminolD12	-85 .. 230
TVP1	TherminolVP1	12 .. 397
TVP1869	Thermogen VP 1869	-80 .. 20
TX22	Texatherm22	0 .. 350
TY10	Tyfoxit 1.10, Potassium Acetate	-10 .. 40
TY15	Tyfoxit 1.15, Potassium Acetate	-20 .. 40
TY20	Tyfoxit 1.20, Potassium Acetate	-40 .. 40
TY24	Tyfoxit 1.24, Potassium Acetate	-55 .. 40
Water	Fit of EOS from 1 bar to 100 bar	0 .. 200
XLT	SylthermXLT	-100 .. 260
XLT2	Syltherm XLT, Polydimethylsiloxan	-100 .. 260
ZS10	Zitrec S10, Potassium formate/Sodium propionate	-8 .. 90
ZS25	Zitrec S25, Potassium formate/Sodium propionate	-23 .. 90
ZS40	Zitrec S40, Potassium formate/Sodium propionate	-38 .. 90
ZS45	Zitrec S45, Potassium formate/Sodium propionate	-43 .. 90
ZS55	Zitrec S55, Potassium formate/Sodium propionate	-55 .. 90

•	The following table describes incompressible fluid mixtures given by mass proportions.

Name	Description	Temperature range (Celsius)	Mass fraction range
FRE	Freezium, Potassium Formate	-40 .. 40	0.190 .. 0.500
IceEA	Ice slurry with Ethanol	-33 .. -8	0.050 .. 0.350
IceNA	Ice slurry with NaCl	-18 .. -3	0.050 .. 0.350
IcePG	Ice slurry with Propylene Glycol	-43 .. -8	0.050 .. 0.350
LiBr	Lithium-bromide solution - aq	-0 .. 227	0.000 .. 0.750
MAM	Ammonia (NH3) - aq	-100 .. 30	0.000 .. 0.300
MAM2	Melinder, Ammonia	-49 .. 20	0.080 .. 0.240
MCA	Calcium Chloride (CaCl2) - aq	-100 .. 40	0.000 .. 0.300
MCA2	Melinder, Calcium Chloride	-44 .. 30	0.090 .. 0.290
MEA	Ethyl Alcohol (Ethanol) - aq	-100 .. 40	0.000 .. 0.600
MEA2	Melinder, Ethanol	-44 .. 20	0.110 .. 0.600
MEG	Ethylene Glycol - aq	-100 .. 100	0.000 .. 0.600
MEG2	Melinder, Ethylene Glycol	-44 .. 40	0.000 .. 0.560
MGL	Glycerol - aq	-100 .. 40	0.000 .. 0.600
MGL2	Melinder, Glycerol	-40 .. 40	0.200 .. 0.630
MITSW	MIT Seawater	0 .. 120	0.000 .. 0.120
MKA	Potassium Acetate (CH3CO2K) - aq	-100 .. 40	0.000 .. 0.450
MKA2	Melinder, Potassium Acetate	-44 .. 30	0.110 .. 0.410
MKC	Potassium Carbonate (K2CO3) - aq	-100 .. 40	0.000 .. 0.400
MKC2	Melinder, Potassium Carbonate	-35 .. 30	0.000 .. 0.390
MKF	Potassium Formate (CHKO2) - aq	-100 .. 40	0.000 .. 0.480
MLI	Lithium Chloride (LiCl) - aq	-100 .. 40	0.000 .. 0.240
MMA	Methyl Alcohol (Methanol) - aq	-100 .. 40	0.000 .. 0.600
MMA2	Melinder, Methanol	-50 .. 20	0.080 .. 0.470
MMG	MgCl2 - aq	-100 .. 40	0.000 .. 0.300
MMG2	Melinder, Magnesium Chloride	-30 .. 30	0.000 .. 0.210
MNA	Sodium Chloride (NaCl) - aq	-100 .. 40	0.000 .. 0.230
MNA2	Melinder, Sodium Chloride	-20 .. 30	0.000 .. 0.230
MPG	Propylene Glycol - aq	-100 .. 100	0.000 .. 0.600
MPG2	Melinder, Propylene Glycol	-45 .. 40	0.150 .. 0.570
VCA	VDI, Calcium Cloride	-55 .. 20	0.150 .. 0.300
VKC	VDI, Potassium Carbonate	-35 .. 20	0.130 .. 0.390
VMA	VDI, Methanol	-80 .. 0	0.100 .. 0.900
VMG	VDI, Magnesium Chloride	-33 .. 20	0.070 .. 0.210
VNA	VDI, Sodium Chloride	-21 .. 20	0.070 .. 0.230

•	Finally, this table describes incompressible fluid mixtures given by volume proportions.

Name	Description	Temperature range (Celsius)	Volume fraction range
AEG	ASHRAE, Ethylene Glycol	-35 .. 100	0.100 .. 0.600
AKF	Antifrogen KF, Potassium Formate	-40 .. 50	0.400 .. 1.000
AL	Antifrogen L, Propylene Glycol	-40 .. 80	0.100 .. 0.600
AN	Antifrogen N, Ethylene Glycol	-40 .. 80	0.100 .. 0.600
APG	ASHRAE, Propylene Glycol	-35 .. 100	0.100 .. 0.600
GKN	Glykosol N, Ethylene Glycol	-53 .. 100	0.100 .. 0.600
PK2	Pekasol 2000, K acetate/formate	-62 .. 100	0.300 .. 1.000
PKL	Pekasol L, Propylene Glycol	-49 .. 100	0.100 .. 0.600
ZAC	Zitrec AC, Corrosion Inhibitor	0 .. 100	0.060 .. 0.500
ZFC	Zitrec FC, Propylene Glycol	-40 .. 100	0.300 .. 0.600
ZLC	Zitrec LC, Propylene Glycol	-50 .. 100	0.300 .. 0.700
ZM	Zitrec M, Ethylene Glycol	-50 .. 120	0.000 .. 1.000
ZMC	Zitrec MC, Ethylene Glycol	-50 .. 110	0.300 .. 0.700

Examples

•	The specific heat capacity of Downtherm Q at 500 kelvin and 1 atmosphere.

>	PropsSI(C, T, 500*Unit(kelvin), P, Unit(atm), "INCOMP::DowQ");

$2288.164376 ⟦\frac{J}{kg K}⟧$

(10)

•	The saturation pressure.

>	PropsSI(P, T, 500*Unit(kelvin), Q, 0, "INCOMP::DowQ");

$38091.37404 ⟦Pa⟧$

(11)

•	Density of a 23% lithium bromide solution at 300 kelvin and 1 atmosphere.

>	PropsSI(D, T, 300*Unit(kelvin), P, Unit(atm), "INCOMP::LiBr[0.23]");

$1187.543824 ⟦\frac{kg}{m^{3}}⟧$

(12)

IF97 Steam/Water Properties

•

In 1997 the International Association for the Properties of Water and Steam (IAPWS) released a formulation for the properties of water and steam, IAPWS-IF97, which is an alternate to the default HEOS formulation. IAPWS-IF97 is faster to compute than HEOS but less accurate and applicable over a much smaller range of temperatures and pressures.

•	The IF97 formulation may be used by specifying the fluid description for water as with the string "IF97::Water".

•	For detailed information about IF97 and its handling in CoolProp, see http://www.coolprop.org/fluid_properties/IF97.html.

Examples

•	Specific heat capacity of Water at 500 K and 1 atm

>	PropsSI(C, T, 500*Unit(kelvin), P, Unit(atm), "IF97::Water");

$1981.542297 ⟦\frac{J}{kg K}⟧$

(13)

•	Density of Water at 500 K and 1 atm.

>	PropsSI(D, T, 500*Unit(kelvin), P, Unit(atm), "IF97::Water");

$0.4409206436 ⟦\frac{kg}{m^{3}}⟧$

(14)

•	Triple Point pressure for Water

>	PropsSI(ptriple, T, 0, P, 0, "IF97::Water");

$611.656000000000063$

(15)

Humid air

•	Finally, the CoolProp library can deal with humid air. This is supported through a separate command, HAPropsSI. More details can be found on its help page.

References

Bell, Ian H.; Wronski, Jorrit; Quoilin, Sylvain; and Lemort, Vincent. Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp. Industrial & Engineering Chemistry Research, Vol. 53 No. 6 (2014): 2498-2508; http://www.coolprop.org/.

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