Description of functions for calculation of properties of water and water steam in the WaterSteamPro package

All WaterSteamPro functions receive arguments and return answers in dimensions of the SI-system. The program Mathcad Professional of the MathSoft, Inc company allows additional facilities for operation with dimensional values.

The most of the functions (except some system functions) takes arguments and returns answers in double type (a real number with double precision).

In the case of an error, all functions return the value of -1 (minus one). The function "wspGETLASTERROR()" allows analysis of an error code. An error code is saved until another call of a "WaterSteamPro" function, except for system functions.

The "WaterSteamPro" package presents unified function names (they have identical names in different programs) which are generated according to the following rules:

String descriptors of quantities and their dimensions in the SI-system are presented below:

Descriptors of water areas and conditions: