International Steam Tables

The International Steam Tables - IAPWS-IF97 app has been developed by energetic members of the International Association for the Properties of Water and Steam (IAPWS) on the Zittau/Goerlitz University of Applied Sciences. The analysis group at the Department of Technical Thermodynamics in Zittau participated in the improvement of the Industrial Formulation IAPWS-IF97 for the Properties of Water and Steam and developed four supplementary requirements for backward equations.

This app is out there for Android and Apple-iOS, and is designed for comfortable use. The calculations of the thermodynamic properties are based mostly on the Industrial Formulation IAPWS-IF97 and canopy its full vary of validity. In addition, transport properties, thermodynamic derivatives, and backward capabilities could be calculated.

This app is intended to be used by college students and engineers in their every day work.

To study extra in regards to the International Steam Tables - IAPWS-IF97 app go to our web site www.thermodynamics-zittau.de for an in depth User's Guide.

---------------------------------------

Features of the International Steam Tables - IAPWS-IF97 app:

The following combinations of enter variables may be chosen:

Pressure p and temperature t

Pressure p and vapor fraction x in wet steam region

Temperature t and vapor fraction x in wet steam region

Pressure p and particular enthalpy h

Pressure p and particular entropy s

Specific enthalpy h and particular entropy s

Specific inside power u and particular quantity v

Specific enthalpy h and particular volume v

The user simply edits the values of the input variables and all results are calculated automatically. See the screenshots below this textual content for details.

Depending on the given pair of enter variables the following properties shall be calculated:

Pressure p or saturation pressure ps

Temperature t or saturation temperature ts

Vapor fraction x

Specific volume v

Density rho

Specific internal vitality u

Specific enthalpy h

Specific entropy s

Specific isobaric warmth capacity cp

Specific isochoric heat capacity cv

Isentropic exponent kappa

Speed of sound w

Isobaric cubic enlargement coefficient alpha_v

Isothermal compressibility kappa_t

Thermal conductivity lambda

Dynamic viscosity eta

Kinematic viscosity ny

Prandtl number Pr

Thermal diffusivity a

The calculated properties are displayed in a scrollable view. The user simply needs to scroll all the means down to see all the outcomes. See the screenshots under for details.

If the person switches from one input variable combination to a different the previously given or calculated values shall be assigned to the brand new input values and the output is being calculated mechanically. For example, if the user calculates a sure state level from stress p and temperature t and switches to a calculation from strain p and particular entropy s afterwards, the previously calculated worth for s (from p and t) might be assigned as input worth for s. This eases the calculation of thermodynamic processes by which one property is saved constant, e. g. of an isentropic enlargement.

The person can select SI or I-P unit techniques. In addition a selection of different items are available,

e.g.

K, °C, °F, °R for Temperature,

MPa, bar, psi, atm for strain,

kg, lb for mass,

kJ, Btu, ft lbf, kcal for energy.

All models may be chosen independently but the user may additionally switch between SI and IP unit system for all properties with just one tap. See the screenshots under this textual content for particulars.

Unit conversions might be effective immediately.

A detailed User's Guide explains the options and capabilities of this App. View the User's guide on-line on www.thermodynamics-zittau.de.