Three complementary engineering models

Merkel

An established integral approach for evaluating cooling-tower heat and mass transfer.

ε-NTU

An effectiveness–number of transfer units formulation for evaluating coupled exchange and tower performance.

Poppe

A detailed formulation that resolves the coupled evolution of water and moist-air states through the tower.

Coupled heat and mass transfer

The calculation framework evaluates heat and mass transfer together and treats the Lewis factor according to the selected model configuration. Solver and convergence information help users interpret each calculation.

Engineering results and model comparison

• Detailed thermodynamic and transfer results

• Side-by-side comparison of Merkel, ε-NTU and Poppe calculations

• Convergence and calculation-status information

• Interactive, method-specific and custom chart views

Interactive charts

Explore calculated profiles and engineering variables through interactive and customizable charts designed for technical review and comparison.

Excel batch processing and export

Process multiple cases from compatible Excel spreadsheets, select the case groups to evaluate and export calculation results for further analysis.

Automatic unit conversion

Switch between SI and Imperial units. Displayed values, chart axes and units are converted automatically.

Available in 14 languages

English · Spanish · Portuguese · French · Italian · German · Japanese · Chinese · Korean · Russian · Latin · Afrikaans · Arabic · Hebrew

Who it is for

Designed for academic, scientific and professional use by engineering students, educators, researchers, designers, operators and technical specialists working with wet cooling towers.