Thermodynamic properties of air

Temperature Pressure Density Volume Int. energy Enthalpy Entropy C, CT Sound speed Joule- Thomson Therm. cond. Viscosity 

Temperature K Pressure MPa Density mol/dm3 Volume dm3/mol Int. energy kj/mol Enthalpy kj/mol Entropy kJ/(mol-K) C, kJ/(mol-K) Cp kJ/(mol-K) Sound speed m/s Joule- Thomson K/MPa Therm. cond. mW/(m-K) Viscosity iPa s 

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Computes thermodynamic properties of air, argon, carbon monoxide, carbon dioxide, hydrogen, nitrogen, oxygen, water vapor, and products of combustion for hydrocarbons. Computes all properties from any two independent properties. 

Consider the pressure loss in a duct with straight, uniform cross-sectional area. The pressure loss is caused by friction. When different air sheets move against each other, friction is generated. The velocity and thermodynamic properties of air influence the friction. The duct wall has an overall roughness, which causes vortices to be formed with resulting friction in gas. The velocity has a pronounced effect in flow with low velocity, the vortices are small. Eor a straight duct the pressure loss Ap can be determined from... 

Psychrometric chart A chart constructed so that knowing any two air properties the remaining thermodynamic properties of air at that condition can be determined. 

F.R. Gilmore, "Equilibrium Composition and Thermodynamic Properties of Air at 24000°K , The Rand Corporation, Research Memorandum RM 1543(1955)... 

NOTE Compiled by John A. Goff and S. Gratch. See also Keenan and Kaye. Thermodynamic Properties of Air, Wiley, New York, 1945. Enthalpy of dry air taken as zero at 0°E Enthalpy of liquid water taken as zero at 32 E... 

International Practical, 5-6 Kelvin, 5-7, 64, 146-147 thermodynamic,) 143-144, 146-147 Thermodynamic analysis of processes, 555-564 Thermodynamic consistency, 355-357 Thermodynamic properties of air, 292... 

FIG. 2-5 Pressure-enthalpy diagram for dry air. Properties computed with the NIST REFPROP Database, Version 7.0 (Lemmon, E. W., McLinden, M. O., and Huber, M. L., 2002, NIST Standard Reference Database 23, NIST Reference Fluid Thermodynamic and Transport Properties—REFPROP, Version 7.0, Standard Reference Data Program, National Institute of Standards and Technology), based on the equation of state of Lemmon, E. W., Jacobsen, R. T., Penoncello, S. G., and Friend, D. G., Thermodynamic Properties of Air and Mixtures of Nitrogen, Argon, and Oxygen from 60 to 2000 K at Pressures to 2000 MPa, /, Phys. Chem. Ref. Data 29 331-385, 2000. 

Thermodynamic Properties of Air-Water Mixtures and Moist Solids.1669... 

These tables summarize the thermodynamic properties of air in the liquid and gaseous states. The first table refers to liquid and gaseous air at equilibrium as a function of temperature. The tabulated properties are ... 

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