Humid air calculations, one process after another
HX-AIR works out air states and chains heating, cooling, mixing, heat recovery, humidifying and dehumidifying on a Mollier h-x diagram. Open it in your browser, enter the values and read the results.
Cooling coil Process 1
Example calculation at sea level pressure, 3 905 kg/h of dry air.
Built for air handling unit calculations
Enter the inlet state and the target of each section. HX-AIR returns the outlet state, the capacity and the water balance, and draws the whole chain on one diagram.
Dynamic input
Enter any two values and get the full air state. Change anything at any time, even in the middle of a chain, and every process after it is recalculated at once.
Chained processes
Continue from the previous process or start a new one. The outlet of one section becomes the inlet of the next, so a complete unit is one connected calculation.
Heating, cooling and heat recovery
Heating and cooling coils, plate exchangers, rotary wheels, membrane exchangers and run-around circuits, with condensation and moisture transfer taken into account.
Humidifying and dehumidifying
Humidify with water, wet steam or saturated steam and read the water demand. Dehumidify and read the condensate.
Projects in your account
Keep calculations under a project, for example Office Building with AHU-01 and AHU-02, and open them again from any device without uploading files.
Reports and export
Print a PDF report, save the diagram as PNG or SVG, and save the calculation locally on your computer.
Seven process types, one diagram
Choose an example to see how the state moves on the diagram. The values come from the HX-AIR engine.
Heating
Free to use
Create an account and use the whole calculator. Paid plans may be introduced later and will be announced in advance.
Free account
- The full calculator with all process types
- Chained processes and the Mollier h-x diagram
- PDF report, PNG and SVG export, local save
- Projects saved to your account
Paid plans Later
- Monthly and yearly options are planned
- Your projects stay available
Denis Jeličić
The idea behind this calculator was simple: create a fast, accurate, browser-based h-x diagram tool that is available anywhere, on any device.
Built on years of experience in thermal engineering and HVAC design, it gives engineers, students and technicians a dependable digital resource for everyday psychrometric calculations.