### Thermo Utilities v3.5, MS Excel Add-ins

Thermo Utilities v3.5 is a software package developed for engineers and scientists who wish to design, analyze or optimize power plants, air conditioning systems and other chemical processes. It supports MS Excel 7.0 and higher and it will run on PC platforms with operating systems ME, XP, Win 7 and Win 8. For older versions Win 95, Win 98, Win NT 3.51, please contact us.

Thermo Utilities offers a large number of functions for calculating the properties of water, steam, air, flue gases and other fluids. The functions used for steam and water properties are based on a set of equations accepted by the members of the Sixth International Conference on the Properties of Steam. The sets of equations are also known as "IFC Formulation for Industrial Use". Thermo Utilities calculates the properties of dry air, moist air, exhaust and flue gases by using equations accepted by ASHRAE and CIBSE (Chartered Institute of Building Services Engineers). Lee-Kesler method used in this package can be applied to a large number of chemicals for estimating thermodynamic properties. The database accompanied with this package for use with Lee-Kesler method supports more than 450 chemicals. The package also offers a large number of inverse functions which are useful for applied thermodynamics calculations. For a detailed description of functions see MS Excel workbook: example.xls. The database functions are obsolete with version 3.5. The fluid properties software supporting the database is offered as a freeware.

Important topics are:

- How to activate functions in Excel
- Properties of steam and water
- Properties of dry air, moist air and flue gases
- Lee-Kesler method
- Unit selection
- Error handling

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