GPCALCS™ Version 6.0

Standard Edition

GPCALCS v6.0 Standard Edition is a collection of MS Excel® workbooks for testing and analyzing all types of power plant equipment, including boilers, air heaters, heat recovery steam generators (HRSGs), steam and gas turbines, condensers, cooling towers, feedwater heaters, pumps, fans, and compressors. This version includes a workbook to calculate the rate of fluid flow in a pipe using either an orifice plate, flow nozzle, or Venturi tube as the measuring device. Used by hundreds of engineers world-wide, GPCALCS is based on years of experience testing and troubleshooting all types of power plant machinery and equipment.

GPCALCS v6.0 Standard Edition includes:

• Equipment Performance Workbooks
• Performance Test Protocols
• GPGas™ Properties Calculator / Add-In
• GPSteam™ Properties Calculator / Add-In
• GPCALCS Library Functions Add-In (New)
• GP Unit Conversion Library / Add-In
• GP Handy Reference Library

Equipment Performance Workbooks

Each Microsoft Excel workbook is organized for convenient data entry and report generation. Using these workbooks, the experienced performance engineer can quickly and accurately calculate equipment efficiencies consistent with industry methodology. Each workbook includes blank worksheets for your own use (test averaging, DDE links, custom reports, etc.). The following performance workbooks are provided:

Performance Test Protocols

A set of performance test protocols (PTPs) is included for your convenience. These generic protocols are provided in Microsoft Word® format and can become the basis of a comprehensive test program. Test protocols are provided for:

GPGas Properties Calculator / Add-In

This tool calculates real gas properties of gases and gas mixtures. Given pressure, temperature, and composition, the calculator provides the following properties based on a user-selectable equation of state:

• Specific Volume
• Enthalpy
• Entropy
• Specific Heat
• Vapor Pressure
• Compressibility
• Isentropic Exponent (Ratio of Specific Heats)

Additionally, a second point can be entered and the calculator will calculate the polytropic head (work), exponent, and efficiency for a compression or expansion process. Gas property values are provided in Excel through the GPGas Library DLL. Available equations of state are the ideal gas, Peng-Robinson (PR), Benedict-Webb-Rubin (BWR), Starling modification of BWR (BWRS), and the Soave modification of Redlich-Kwong (RKS).

GPSteam Properties Calculator / Add-In

GPSteam—also available as a stand-alone product—provides a convenient means of obtaining thermodynamic properties of water and steam (English or metric) over a wide range of pressures and temperatures. By entering any two state conditions (P, T, h, S, Q), the program returns ten physical properties of the fluid. The calculator provides a user-selectable 'switch' to use either the 1967 or 1997 ASME Steam Property formulations. A graphical user interface also displays an active Mollier diagram and enthalpy-drop efficiency calculations for one or more expansion lines. '67 and '97 Steam Tables are provided in Excel through the GPSteam Library DLL.

GPCALCS Library Functions Add-In

GPCALCS library functions are provided in Excel to return the thermodynamic properties of gas turbine exhaust gas, boiler flue gas, or moist air at or near atmospheric pressure.

GP Unit Conversion Library / Add-In

Unit conversions are provided for automatic engineering unit conversions (both English and metric) for user inputs as well as any calculated values using the GP Units Conversion Utility. The Excel add-in eliminates the need to manually search through unit conversion tables.

GP Handy Reference Library

In addition, a GP Handy Reference Library workbook contains the following commonly used reference material, displayed as a set of worksheets

Training Seminars

General Physics hopes that the time you save in developing test procedures and conducting performance calculations can be used effectively to analyze your performance test results for the root cause(s) of any indicated performance deficiencies. We encourage your performance engineers or any of your power or process plant personnel interested in improving efficiency to increase their knowledge and diagnostic skills by attending one of our several Performance Knowledge™ Series seminars. Heat rate improvement courses, including Advanced Performance Analysis and Troubleshooting for Power Plants—a case study-based seminar using GPCALCS—are offered for operations, maintenance, entry-level engineers, and experienced power plant engineers as open enrollment or on-site presentations.