How To Read A Psychrometric Chart Guide

This is the "normal" air temperature measured by a standard thermometer. As you move from left to right, the air gets warmer. B. Humidity Ratio (Moisture Content) The Lines: Straight horizontal lines. The Scale: Found along the far-right vertical axis.

The purpose of this report is to provide a systematic procedure for reading a standard psychrometric chart. Understanding this chart is essential for analyzing moist air properties, calculating HVAC loads, designing cooling towers, and predicting human comfort conditions. how to read a psychrometric chart

A psychrometric chart is defined by five distinct lines. Learning to distinguish them is the key to mastery. This is the "normal" air temperature measured by

The temperature air reaches when water evaporates into it. If you’ve ever felt chilled standing in front of a fan while sweaty, you’ve felt the effects of wet-bulb temperature. E. Enthalpy Understanding this chart is essential for analyzing moist