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How to use the Psychometric Chart

A psychrometric chart can be used in two different ways.

The first is done by plotting multiple data points, that represent the air conditions at a specific time, on the chart.

Then, overlaying an area that identifies the “comfort zone.” The comfort zone is defined as the range within occupants are satisfied with the surrounding thermal conditions. After plotting the air conditions and overlaying the comfort zone, it becomes possible to see how passive design strategies can extend the comfort zone