The updated version of WASP is currently in the final testing phase and is planned for release in Q1 2020. The new version will be compliant with the IAPWS Industrial Formulation 1997 (IF-97) for the Thermodynamic Properties of Water and Steam, as well as the relevant releases for viscosity etc. The new WASP will be integrated into the Uconeer units conversion program and will take advantage of the Uconeer ability to add custom units.

The current trial version (v2.3) of WASP is still available for download. A free license for the current version (and free upgrade to the Q1 2020 version) is included in the purchase of the current Uconeer as described below.

WASP - Water And Steam Properties

This program calculates the physical properties of ice, water and steam in all popular units. It contains data for 15 fixed and 17 variable properties from -100 to 800 deg C and up to 1000 bar.

The variable properties available for ice, water and steam (where applicable) are enthalpy, entropy, internal energy, density (specific volume), enthalpy of vaporization, viscosity, heat capacity at constant pressure, thermal conductivity, surface tension, thermal expansion coefficient, isothermal compressibility, isentropic expansion coefficient "Z", dielectric constant, refractive index and melting (freezing) point.

The fixed properties available are molecular weight, normal melting point, normal boiling point, critical temperature, critical pressure, critical density (specific volume), critical compressibility factor "Z", standard enthalpy of formation, standard Gibbs energy of formation, Pitzers acentric factor, dipole moment, triple point temperature, triple point pressure and enthalpy of fusion at normal melting point.

You can download the free evaluation version (640 kb). This version is fully functional, but has a time limit per session. To install, unzip the downloaded file into a temporary directory and run Wasp_Setup.exe

It replaces printed Steam Tables but covers many more properties and eliminates the need to interpolate between data points. WASP has context sensitive on-line Help. The calculated data points match published data very closely. This program can be used to calculate physical properties for known temperature and pressure conditions, or it can search for the conditions that give rise to particular values of enthalpy, entropy or density.

The WASP Main Properties Screen

WASP Main Screen Image

If either the temperature or pressure is entered, WASP will calculate the corresponding saturation pressure or temperature, and the physical properties at that condition. Properties for subcooled liquid or superheated steam can be calculated by specifying both the temperature and pressure.

The WASP Fixed Properties Screen

WASP Fixed Properties Screen

In addition to the properties of ice, water and steam that are pressure and temperature dependent, WASP includes 15 useful fixed properties.

The WASP Property Search Screen

WASP Property Search Screen

If one of enthalpy, entropy or density is known, plus either the temperature or pressure, then WASP can search for the other properties. This is very useful in calculating properties after a change of condition.

The WASP Units Selection Screen

WASP Units Selection Screen

The units to be used for data entry and display of physical properties can be selected in sets or individually. The program stores your selection of units for use in subsequent sessions. The sets of units available include SI, Imperial, Customary (USA) and European Units,

WASP runs under Windows XP / Vista / Win 7 / Win 8 & 8.1 / Win 10. It is a 32-bit application but will also run under the 64-bit versions of these operating systems. The current version is 2.3, which gives improved support for the decimal comma.

Ordering a Full Version of WASP

WASP is currently not being sold separately, but it can be obtained by purchasing a license for Uconeer. The updated version of WASP will be integrated into the upcoming (Q1 2020) version of the Uconeer units conversion program. Anyone purchasing Uconeer now will be eligible for a free license for the old version (v 2.3) of WASP now, and will be able to upgrade to the upcoming integrated version for free as soon as it is available.

A free update to the Q1 2020 version will be available to anyone who purchased either Uconeer or WASP on or after July 1, 2018.