What's new in version 6.0

  1. New functions for calculation properties depending on parameters (h, s) for all regions of IF-97.
  2. New functions to speed up property calculations in region 3 of IF-97 depending on parameters (p, h), (p, s).
  3. New functions for calculation rough values of density on saturation line for water and steam (wspROUSGHRSWT(t), wspROUGHRSST(t)).
  4. New functions for calculation rough values of specific enthalpy on saturation line for water and steam (wspROUGHHSWS(s), wspROUGHHSSS(s)) depending on parameter (s).
  5. New functions for calculation of initial value for density in region 3 of IF-97 depending on pressure and temperature. That speed up considerably calculation of r(p, t) in region 3 (in my opinion 3 - 5 times faster).
  6. New functions for calculation source properties in regions ## 1, 2, 3, 5 of IF-97 depending on parameters (r, h).
  7. New functions for calculation pressure at sublimation and melting lines.
  8. Changed the algorithm for working with calculation tolerance and regions bounds. Due to this change some functions are absolete and don't used.
  9. New functions for calculation thermodynamic properties of 11 gases (included to air and combustion products) and mixtures on their base in temperature range from 200 to 2500K. Gases and mixtures are processed as ideal gases and ideal mixtures.
  10. Added samples of using gases functions in Excel and Mathcad.
  11. Added sample of using WaterSteamPro functions in Maple.
  12. Added integration module for Maple.
  13. Program WaterSteamPro Calculator is rewritten and new functions have been added in it.
  14. Fully rewritten integration module for Excel (with xll technology).
  15. Solved the problem with displaying WaterSteamPro function help in Excel.
  16. Added program "WaterSteamPro Updater" - now you can quickly check for new WaterSteamPro releases.
  17. Solved the problem for using WaterSteamPro functions in Mathcad 12. Additional information given in documentation.
  18. Bug fixes in functions wspJOULETHOMPSON2PT(p, t), wspCPMSPT(p, t), wspJOULETHOMPSON5PT(p, t), wspVUSHCVWDERPT5PT(p, t), wspPT5RH(r, h), wspPT5HS(h, s).
  19. Extended bounds checking for double-phase area.
  20. New installer is written using the new program. The previous program (IS 5.1) "crashed" making the installer.
  21. Internal calculation of functions is written anew. In this connection and others, the main library of WaterSteamPro is named OKAWSP6.DLL.
  22. Changes in documentation.
  23. Registration mechanism is changed.

What's new in version 5.6

  1. The software package "WaterSteamPro" is recommended by Department of General Inspection for Exploitation of Electrical Power Stations and Networks of Russian Joint Stock Company Unified Energy System of Russia (RAO "UES of Russia" - http://www.rao-ees.ru/en/) for using in power engineering (information letter # IP-14-27-2001 from 03.08.2001).
  2. Calculations are speeded up noticeably. The result you can see here
  3. Eight new functions for combined calculation which allow faster calculation of several properties in one point. Besides, new functions allow calculating derivates of basic properties depending on pressure and temperature. List of new functions is given here.
  4. New function wspDPDTST for calculation derivative of saturation pressure on saturation temperature.
  5. Calculation of properties in double-phase region is changed.
  6. Two functions for calculation isochoric heat capacity (Cv) at saturation line from the double-phase region area. These functions allow properly calculation (that agree with thermodynamic) of the next properties in double-phase area: isochoric heat capacity, isoentropic exponent, sound velocity. List of new functions is given here.
  7. Function wspCVSTX now uses functions mentioned above which consider isochoric heat capacity jump at saturation line. That allow the function to be removed from "non thermodynamic" category.
  8. Function wspKSTX now uses functions mentioned above which consider isochoric heat capacity jump at saturation line. That allow the function to be removed from "non thermodynamic" category.
  9. Function wspWSTX now uses functions mentioned above which consider isochoric heat capacity jump at saturation line. That allow the function to be removed from "non thermodynamic" category.
  10. Function for calculation Joule-Thompson coefficient in double-phase area (wspJOULETHOMPSONSTX) now calculates the value agreed with thermodynamic: JT = (dt/dp)h=const, not as in previous versions by dryness factor. That allow the function to be removed from "non thermodynamic" category.
  11. Added search capability in documentation.

What's new in version 5.5

  1. "WaterSteamPro" received the official certificate from GOSSTANDART OF RUSSIA (http://www.gost.ru) that WaterSteamPro functions reproduce the values from the standard reference data (GSSSD R-776-98) and the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam. The registration number is "AK-35/4" of April 16 2001. You can find the electronic copy of certificate at web site of WaterSteamPro: http://www.wsp.ru/eng/certif.htm.
  2. Thirteen functions for calculation meta-stable area of steam. Here is the list of new functions.
  3. New functions are supported in the program WSP Calculator.
  4. Some improvements in internal code of functions that speed up calculations.
  5. Mathcad Samples were changed greatly.
  6. All new samples for Mathcad are renamed 8.3 formats and installed to subfolder "WaterSteamPro" of your "My Documents" folder.
  7. Code for registration is changed. That does not apply to users registered earlier. No registered users need to change their registration code.
  8. Mathcad file "units.mcd" with additional dimensions for WaterSteamPro is renamed "wspunits.mcd" for unification with Russian version of WaterSteamPro and for compatibility with other user's files. Old file "units.mcd" is included only for compatibility.
  9. Documentation is changed.

What's new in version 5.4

  1. WaterSteamPro received the official certificate from GOSSTANDART OF RUSSIA (http://www.gost.ru) that WaterSteamPro functions reproduce the values from the standard reference data (GSSSD R-776-98) and the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam. The registration number is "AK-35/4" of April 16 2001. You can find the electronic copy of certificate at web site of WaterSteamPro: http://www.wsp.ru/eng/certif.htm. Added 16 new functions for calculating processed of expansion/compression. List of the new functions given here.
  2. Sixteen functions are added for calculation compression/expansion properties in double phase area. Here is the list of new functions.
  3. WaterSteamPro has full support for calculation processes of expansion and compression in double phase area.
  4. There are three new samples of using WaterSteamPro functions for expansion/compression in Mathcad. Search these files in your "My Documents" folder.
  5. Program WSP Calculator was improved.
  6. Registration was improved.

What's new in version 5.3

  1. 1. There are 14 new functions for calculation values in expansion/compression processes. List of the new functions is given here
  2. 2. The registration rules are changed, the details see in section F.A.Q..
  3. 3. File "watersteampro.mcd" for work with beta-version of Mathcad 2001 is changed.

What's new in version 5.2

  1. Fifty nine new functions including thermophysical properties with arguments pressure and entropy listed in new file of documentation function history Description of all functions is renewed.
  2. Functions for Joule-Thompson coefficient calculation.
  3. Function for checking internal version of WaterSteamPro: "wspGETWSPVERSION".
  4. Program "WaterSteamPro Calculator" with new improvements.
  5. Examples of new functions of WaterSteamPro Mathcad files (see graphics). Bugs in sample file of WaterSteamPro for Mathcad is fixed.
  6. WaterSteamPro Add-in for Microsoft Excel has been rewritten. Now "Insert function" Wizard displays the quick reference for selected WaterSteamPro function.
  7. Example of the using WaterSteamPro in Borland Delphi.
  8. New section (several files) for developer.
  9. Some noncritical bug fixes in Excel examples.
  10. Some noncritical bug fixes in installation program.
  11. Documentation have been changed.
  12. New section in "FAQ"
  13. Bug fixes in WSP Calculator connected with dimension of the surface tension.
  14. Bug fixes in library OKAWSP5.DLL. Function wspGETLASTERROR may have returned value 0 (no error) when some floating-point error occurred in a function (the functions always return value "-1" - indicator of error) or checking the argument range was disabled by function wspSETCHECKRANGEMODE.
  15. New section "Special thanks" have been appeared in documentation.

What's new in version 5.1

  1. Function wspGETLASTERRORDESCRIPTION() which returns description of an error.
  2. Program "WaterSteamPro Calculator" is rewritten.
  3. Bug fixes in function wspXSTH(t, h) This function has worked only when range checking was disabled.
  4. Changes in Microsoft Excel add-in OKAWSP5.XLA installation folder, which now installs to Excel folder.
  5. Installation program has been rewritten.
  6. Documentation has been changed.

What's new in version 5.0

  1. All functions have been transferred into C++ and composed into a dynamic-link library (DLL).
  2. Calculation speed in the Mathcad environment have been increased by 8 - 14 times comparing with the earlier versions.
  3. WaterSteamPro package is executable in other program environments now.
  4. WaterSteamPro Calculator is available now with the sources in the Microsoft Windows environment that allows calculation of water and water steam properties.
  5. Examples of WaterSteamPro operation in Microsoft Visual Basic, Microsoft Excel, and even Windows Scripting Host are also available.
  6. New functions for calculation of water and water steam properties (see "List of functions for calculation of water and water steam properties").
  7. All functions have new names for unification (the version is not compatible with WaterSteamPro versions lower than 5.0).
  8. The installer is available now.