product information

SteamTab Quad™ Product Information

Introduction

SteamTab Quad sets a new standard in capability and ease of use for steam property generation. SteamTab Quad contains all of the features of SteamTab Duo Version 3.0. In addition, with SteamTab Quad, you can choose from 4   different formulations to base steam property calculations:

1. Scientific Formulation (IAPWS-95): This is the formulation approved by the International Association of the Properties of Water and Steam (IAPWS) in 1995 for general and scientific use. This formulation is more thermodynamically rigorous, accurate, and applicable over wider range of conditions.
2. Industrial Formulation (IAPWS-IF97): This is the IAPWS approved formulation of industrial and special use. The industrial formulation is based on an approximation of the scientific formulation and is generally used in situations where computational speed is of importance.
3. Old Scientific Formulation (NBS/NRC-84): This is the older scientific formulation approved in 1984 and also available in our SteamTab V2 and SteamTab Duo V1 products.
4. Old Industrial Formulation (IFC-67): This is the older, but widely accepted formulation in the power industry. This formulation is based on the 1967 IFC formulation for industrial use (ASME Steam Tables, 6th Edition).

Using SteamTab Quad  in a spreadsheet allows you to examine a large number of design scenarios for optimization and visualize the results in great looking tables and charts.

SteamTab Quad  could also be used to generate Mollier charts and steam tables in your own choices of units, graduations, or language.

Range

See the Technical Information page for information on the valid temperature and pressure ranges.

Package Contents

The SteamTab Quad add-in package contains:

• Spreadsheet add-in files containing the SteamTab Quad Functions and SteamTab Quad user-interface consisting of dialog boxes and the SteamTab Toolbar.
• Dynamic link libraries for the Scientific (IAPWS-95 and NBS/NRC-84) formulations and the Industrial (IAPWS-IF97 and IFC-67) formulation.
• Separate worksheet functions for both formulations
• A 40+ page users' guide
• On-line context sensitive help
• Extensive samples illustrating the capabilities of this package
• Templates for: compressor, expander, relative humidity, dew point, pressure letdown, etc.
• Free technical support

Unique Features

Some of the unique features of SteamTab Quad are:

• Easy access to the most comprehensive set of thermodynamic and transport steam properties from the spreadsheet’s Tools menu or the SteamTab toolbar
• Direct "live" links to variable steam conditions by cell reference
• Built-in SteamTab Quad™ worksheet functions, user-interface dialog-boxes and toolbars
• Choice of Metric/SI or English units
• Direct calculation of steam outlet conditions for isentropic, isenthalpic, constant internal energy or constant volume process
• SteamTab Quad Functions for saturated vapor-liquid, superheated, subcooled, and constant steam properties
• Generate your own steam property diagrams using the spreadsheet’s charting capability
• Save steam property values for export to other applications – limited only by the spreadsheet’s file transfer capability
• Templates and examples for Expander, Compressor, Pressure reducing, Relative humidity, etc.

System Requirements

You should not encounter any hardware or software problems in using SteamTab Quad on any hardware that has one of the following spreadsheet applications pre-installed:

• Microsoft Excel 95/97/2000/XP for Windows 95/98/NT4/2000/XP
• Lotus 1-2-3 V97/Millennium for Windows 95/98/NT4/2000/XP

 

SteamTab Quad requires about 1.2 megabytes (1.2 MB) of hard disk space. While SteamTab Quad will work with 8 to 16 MB of RAM it is recommended that at least 32 MB of RAM be available.

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