Optional airflow at this point — used to size process capacity (kW)
✓ Saved — View on Chart →
Calculated Properties
Interactive Psychrometric Chart
ⓘ Chart axes are always in SI (°C / g/kg). Switch to SI to match chart values exactly.
Compute a Process
Pick a process type and enter conditions to compute a stage. Each computed stage creates its state points, adds to the chain below, plots on the chart, and lights up the schematic. To link points you already have, use Manual Connections below.
12 psychrometric processes
System design airflow rate
Process Chain Summary
#
Process
Airflow L/s
ṁ kg/s
Enter DB °C
Leave DB °C
Enter h kJ/kg
Leave h kJ/kg
Enter W g/kg
Leave W g/kg
Q_s kW
Q_l kW
Q_t kW
TR
Saved State Points
#
Label
Source
Type
DB °C
WB °C
RH %
W g/kg
h kJ/kg
v m³/kg
Flow L/s
No state points saved yet.
Manual Chart Connections
Link any two saved points into a process. Pick From and To and a process type below; the connection draws on the chart and its Δh and capacity appear in the table. Processes computed in Build Cycle auto-connect — add manual links here for points the calculator didn't chain.
⚠ CONN — Save at least 2 state points first.
From
To
Type
Δh kJ/kg
Capacity kW
AHU Cycle Schematic — Once Return
Run a process to generate schematic.
Save points and run processes to generate report.
Point Type Legend
Select a point type below — each gives the point a unique shape and colour on the chart. Process calculators auto-assign types; you can override here.