Online Interactive Psychrometric Chart

Multiple Air Processes

Simulate up to 5 air handling processes

PDF Export

Print your chart, input and results

Save Projects

15 projects can be saved on you account

Multiple Processes

With this online tool you can simulate and visualize thermodynamic processes that affect moist air.

Simulate 5 processes in a row

After entering the Air Start Conditions, which also involves the Altitude and Air Flow you can enter various actions, like:

COOL

HEAT

MIX

HUMIDIFY

RECOVERY

The new condition of the air is calculated and this new point and the process will be automatically drawn in the diagram.

Chart Settings

Upon accessing the tool, you will have the opportunity to set your general settings. Choose your preferred chart style and language, and select the unit system that you are familiar with.

Chart Style: Mollier/ Psychrometric-Chart. The x/y-axes will be flipped.
Chart Language: Input and output fields will be translated to your selected language.
Units-system: Metric(SI) or Imperial(I-P). This affects the chart, input and calculated values.

In the chart settings (icon under the chart), you can adjust the Temperature Axis and Absolute Humidity Axis, enable and set your Comfort Area and define the Air Density.

Axes: By adjusting the ranges, you can focus on just a part of the diagram.
Comfort Area: This is the range of the desired Temperature and Humidity. On/Off or customizable.
Density is standard set to actual Density (dynamic value). If enabled, the calculator will use the uniform density you set (fixed value).

Finding Air Conditions

It is possible to find the air condition based on the intersection between two of these parameters types:

Dry Bulb Temperature
Wet Bulb Temperature
Dew Point Temperature
Absolute Humidity
Relative Humidity
Enthalpy

Calculated results

Results are plotted in the chart, but also as numbers in tables. Two tables are under the chart:

Calculated Point Values: All psychrometric properties of the plotted air conditions.
Calculated Process Changes: All psychrometric process changes between the points.

Users with the "Complete Plan", can save up to 15 Projects and the chart, input fields and the results can be downloaded as an PDF-export as well.

Download Example PDF Export

START Psychrometric Chart