WinSteam provides accurate thermodynamic and transport properties of steam and water for Windows applications using the new IAPWS-IF97 formulations as revised in 2007.   WinSteam also allows you to select the IFC 1967 formulations for compatibility with older projects. 

The steam property functions can be used directly from within applications including Microsoft Excel, 1-2-3 and MathCad.  Add-ins attach the functions so that you can use them as if they were built in to the applications. 

What's New in Version 4.0

• Uses new IAPWS-97 formulations revised in 2007

·         Region 5 formulations were modified to increase the pressure range from 10 MPa (1450.3 psia) to 50Mpa (7251.9 psia) for high temperature steam in the range from 800 deg C (1472 deg F) to 2000 deg C (3632 deg F). 

·         Some improvements to the transport properties were also incorporated as published by IAPWS in December, 2008.

• Added 64-bit version of Excel Add-in compatible with Office 2010, 64-bit.
• Added 64-bit version of Steam property DLL.
• Added 64-bit version of DeskTop Steam.
• Converted all help files to compiled HTML format.
• Removed WinSteam Help link from all versions of Excel and 1-2-3 menus.

·         Includes new functionsStmPVT - calculates temperature from pressure and specific volume.

·         StmPVQ - calculates quality from pressure and specific volume.

·         StmTVP - calculates pressure from temperature and specific volume.

·         StmTVQ - calculates quality from temperature and specific volume.

Key Features

• Uses new IAPWS IF97 formulations by default.
• User can choose to use IAPWS-IFC67 formulations if desired.
• Includes DeskTop Steam, a new advanced  interactive steam property calculator.
• Functions can be used as if they were built in to most popular spreadsheet programs.
• 47 functions support most useful combinations of input data.
• New functions return sonic velocity and isentropic expansion coefficient.
• Accepts English, SI or metric units.
• Functions can be called from many Windows programming languages.
• Allows pressures up to 16,000 psia.
• Allows temperatures from 32.018 deg F to 1472 deg F (800 deg C)  for full range of pressures.
• Allows temperature up to 3632 deg F (2000 deg C)  for pressures up to 7251.9 psia (50MPa) .

Applications Supported

The WinSteam package includes various add-ins which link the functions to many popular 32-bit and 64-bit Windows applications.  32 bit add-ins are included for Microsoft Excel Versions for Office 95, Office 97, Office 2000; Office XP, Office 2007 and Office 2010 (32-bit version); Lotus 1-2-3 97 and 1-2-3 Millennium and MathSoft Mathcad Plus Versions 6, 7 and 8. A 64-bit add-in is included for Office 2010, 2013, 2016 and 365 (64-bit version.)

No programming is required to use the WinSteam functions with any of these applications. Just follow a few simple steps to load the add-in, and from then on, the functions will be available every time you start the application. You use the functions just like any of the built-in functions. The functions can be used in any spreadsheet formula and any argument to the functions can be a number, a formula or a cell reference.