The application can be useful for HVAC engineers and contains 2 modules.

Psychrometric calculator - allows for psychrometric calculations.

Pipe Calculator - this module is used to calculate velocity and pressure loss in pipelines and to select pipeline diameters for a given maximum velocity and pressure loss. It can also be used as a reference for heat transfer fluid properties and pipe characteristics.

Also in the description sections are the reference formulas by which the calculations are made.