The user can choose SI or I-P unit systems. This eases the calculation of thermodynamic processes in which one property is kept constant, e. For example, if the user calculates a certain state point from pressure p and temperature t and switches to a calculation from pressure p and specific entropy s afterwards, the previously calculated value for s (from p and t) will be assigned as input value for s. If the user switches from one input variable combination to another the previously given or calculated values will be assigned to the new input values and the output is being calculated automatically. The user just needs to scroll down to see all the results. The calculated properties are displayed in a scrollable view.
Isobaric cubic expansion coefficient alpha_v Temperature t or saturation temperature ts See the screenshots below this text for details.ĭepending on the given pair of input variables the following properties will be calculated: The user just edits the values of the input variables and all results are calculated automatically. Specific enthalpy h and specific volume v Specific internal energy u and specific volume v Specific enthalpy h and specific entropy s
Temperature t and vapor fraction x in wet steam region Pressure p and vapor fraction x in wet steam region The following combinations of input variables can be chosen: To learn more about the "International Steam Tables - IAPWS-IF97" app visit our website for a detailed User's Guide.įeatures of the "International Steam Tables - IAPWS-IF97" app: This app is intended to be used by students and engineers in their daily work. In addition, transport properties, thermodynamic derivatives, and backward functions can be calculated. The calculations of the thermodynamic properties are based on the Industrial Formulation IAPWS-IF97 and cover its full range of validity. This universal app can be used on iPhone, iPad, and iPod touch, and is designed for comfortable use. The research group at the Department of Technical Thermodynamics in Zittau participated in the development of the "Industrial Formulation IAPWS-IF97 for the Properties of Water and Steam" and developed four supplementary standards for backward equations. The "International Steam Tables - IAPWS-IF97" app has been developed by active members of the International Association for the Properties of Water and Steam (IAPWS) at the Zittau/Görlitz University of Applied Sciences. Calculate the thermodynamic and transport properties of water and steam according to the current Industrial Formulation IAPWS-IF97 with this App.
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