ASTEM97 Version 2.0 - Steam tables based on the 1997 IAPWS release for the properties of water and steam for industrial use.  Revised cost is effective immediately.

The FORTRAN source code for ASTEM97 is available for a non-refundable cost of $400.00 (U.S.) plus $20.00 (U.S.) - VA State Tax, for a total of $420.00 (U.S.).

Send a check or money order for $420.0 (U.S.) along with a valid e-mail address to:

        Edward D. Throm
        6116 Dory Landing Court
        Burke, VA 22015-2506 (USA)

The source code will be provided by e-mail.  A 3.5 inch diskette can be provided for an additional $5.00 (U.S.) to cover cost, handling and shipping, in which case a return address needs to be provided with payment.  Fixes to the source code will be provided at no addition cost by e-mail.

The source code may be used to develop projects that require the thermodynamic and transport properties of water but may not be used to develop commercial projects that only calculate these properties.  Simply stated, you cannot develop a competing commercial project.  You may, of course, develop any project for your own personal use.

Please read the CopyRight and Disclaimer and the License Agreement before placing an order.

ASTEM97 contains 307 FORTRAN routines to provide a wide range of interfaces to the thermodynamic and transport properties.  High-level routines are available that return all the properties with a single call, mid-level routines for specific properties and low-level routines for specific properties in specific IF97 regions.  Support routines are also available for unit conversion, to retrieve specific properties following calls to the high-level routines and to identify the IF97 region based on user provided data points.  Some routines are used internally and not generally called by the user.

All the routines are based on SI input units: pressure in Pa, temperature in K, density in kg/m^3 , specific volume in m^3/kg, enthalpy and internal energy in kJ/kg and entropy in kJ/kg-K.  A complete index of the 256 routines is provided in Appendix A of the documentation.

Some of the routines are redundant but are provided in the complete package to document the development of the package, and to provided insights for programmer's using ASTEM97 to develop their own works.  This also allows a user to develop a smaller (memory) package at the expense of computation speed.

See the Documents page for additional information.

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