Pv = RT_AirRev. cjc. 31.01.2014Ideal gas lawApplication to
airAir constantAirAir densityR =Rg / MMRg =8314.41[ J / (kmol*K)]P:
pressure[Pa]Air molecular mass(Sheet MM)Gauge pressureMM
=28.966kg/kmolv : Specific volume[m/kg]MM =28.966kg/kmolPgauge
=4barR =287.0J/(kg*K)R : gas constant[J / (kg*K)]Height above sea
levelT : Temperature[K]Air constantH =2500m.a.s.l.R =Rg / MMAmbient
temperatureRg =8314.41[ J / (kmol*K)]t =5CMM =28.966kg/kmolR : gas
constant (of a particular gas)R =287.0J/(kg*K)Local atmospheric
pressure [1]Rg : general gas constant [ J / (kmol*K)]Ploc_atm
=101,325* (1 -2,25577E-5 * H)^5,25588M : molecular mass[kg/kmol]Air
density in normal stateH =2500m.a.s.l.Rg =8314.41[ J / (kmol*K)]r
=P / (R*T)Ploc_amb =74.68kPaP =101,325PaR
=287.0[J/(kg*kmol)Absolute air pressureT =273.15KP =Pgauge +
Ploc_atmV : volume[m]r =1.29kg/mPgauge =400,000Pam :
mass[kg]Ploc_amb =74,683PaP =474,683PaAbsolute ambient temperatureT
=t + 273.15t =5CT =278.15KAir densityV : molar volumem / kmolr =P /
(R*T)P =474,683PaR =287.0[J/(kg*kmol)T =278.15Kr =5.95kg/m
Pv = RT_NitrogenRev. cjc. 03.07.2013Ideal gas lawApplication to
nitrogenNitrogen constantNitrogenNitrogen densityR =Rg / MMRg
=8314.41[ J / (kmol*K)]P: pressure[Pa]Nitrogen molecular mass(Sheet
MM)Gauge pressureMM =28.0134kg/kmolv : Specific volume[m/kg]MM
=28.0134kg/kmolPgauge =4barR =296.8J/(kg*K)R : gas constant[J /
(kg*K)]Height above sea levelT : Temperature[K]Nitrogen constantH
=2500m.a.s.l.R =Rg / MMAmbient temperatureRg =8314.41[ J /
(kmol*K)]t =5CMM =28.0134kg/kmolR : gas constant (of a particular
gas)R =296.8J/(kg*K)Local atmospheric pressure [1]Rg : general gas
constant [ J / (kmol*K)]Ploc_atm =101,325* (1 -2,25577E-5 *
H)^5,25588M : molecular mass[kg/kmol]Nitrogen density in normal
stateH =2500m.a.s.l.Rg =8314.41[ J / (kmol*K)]r =P / (R*T)Ploc_amb
=74.68kPaP =101,325PaR =296.8[J/(kg*kmol)Absolute pressure of
nitrogenT =273.15KP =Pgauge + Ploc_atmV : volume[m]r
=1.25kg/mPgauge =400,000Pam : mass[kg]Ploc_amb =74,683PaP
=474,683PaAbsolute ambient temperatureT =t + 273.15t =5CT
=278.15KNitrogen densityV : molar volumem / kmolr =P / (R*T)P
=474,683PaR =296.8[J/(kg*kmol)T =278.15Kr =5.75kg/m
MMhttp://www.engineeringtoolbox.com/molecular-weight-gas-vapor-d_1156.htmlMolecular
Weight - Gases and VaporsMolecular mass of common gases and
vaporsThe molecular weight of a substance, also called molecular
mass, is themass of one molecule of that substance, relative to the
unified atomicmass unit u equal to 1/12 the mass of one atom of
carbon-12.Gas or VaporMolecular WeightGas or VaporMolecular
WeightGas or VaporMolecular Weightkg/kmolkg/kmolkg/kmolAcetylene,
C2H226.04Hydrogen, H22.016R-11137.37Air28.966Hydrogen
Chloride36.461R-12120.92Ammonia (R-717)17.02Hydrogen
Sulfide34.076R-2286.48Argon, Ar39.948Hydroxyl,
OH17.01R-114170.93Benzene78.11Krypton83.8R-123152.93N-Butane,
C4H1058.12Methane, CH416.044R-134a102.03Iso-Butane (2-Metyl
propane)58.12Methyl Alcohol32.04R-61160.05Butadiene54.09Methyl
Butane72.15Sulfur32.021-Butene56.108Methyl Chloride50.488Sulfur
Dioxide64.06cis -2-Butene56.108Natural Gas19Sulfuric
Oxide48.1trans-2-Butene56.108Neon,
Ne20.179Toluene92.13Isobutene56.108Nitric Oxide,
NO230.006Xenon131.3Carbon Dioxide, CO244.01Nitrogen, N228.0134Water
Vapor - Steam, H2O18.02Carbon Disulphide76.13Nitrous
Oxide44.012Carbon Monoxide,
CO28.011N-Octane114.22Chlorine70.906Oxygen,
O231.9988Cyclohexane84.16Ozone47.998Deuterium2.014N-Pentane72.15Ethane,
C2H630.07Iso-Pentane72.15Ethyl Alcohol46.07Propane, C3H844.097Ethyl
Chloride64.515Propylene42.08Ethylene,
C2H428.054Fluorine37.996Helium,
He4.02N-Heptane100.2Hexane86.17Hydrochloric Acid36.47
Molecular Weight - Gases and Vapors
RefScript MT bold[1]The Engineering
Toolboxhttp://www.engineeringtoolbox.com/air-altitude-pressure-d_462.htmlalsowww.piping-tools.netAtmospheric_temperature_pressure_and_density_as_function_of_the_height_above_sea_level.xlsm
www.piping-tools.net
MBD0010D921.unknown
MBD0010D925.unknown
MBD0010D929.unknown
MBD0010D92B.unknown
MBD0010D92A.unknown
MBD0010D927.unknown
MBD0010D928.unknown
MBD0010D926.unknown
MBD0010D923.unknown
MBD0010D924.unknown
MBD0010D922.unknown
MBD0010D91F.unknown
MBD0010D920.unknown
