Psych Chart Direct

If you work in heating, ventilation, air conditioning, or building science, you have likely heard the phrase, “Just look at the psych chart.” To the untrained eye, a psychrometric chart looks like a bowl of colorful spaghetti—a mess of curved lines, diagonal axes, and cryptic numbers. However, once you learn to read it, you realize it is one of the most elegant and useful data visualization tools ever invented.

: Features include the ability to change altitudes or barometric pressures, adjust temperature ranges, and switch between Imperial (IP) and Metric (SI) units instantly. psych chart

: Dedicated scales or lines help engineers calculate the ratio of sensible to total heat, which is critical for sizing air conditioning equipment. If you work in heating, ventilation, air conditioning,

The chart may appear intimidating at first, but it is essentially a collection of overlapping lines that represent specific properties of air. : Dedicated scales or lines help engineers calculate

We don't feel dry-bulb temperature alone. On a 95°F day with 30% RH, sweat evaporates easily, and you feel hot but okay. On a 95°F day with 80% RH, the wet-bulb temperature is high; sweat doesn't evaporate. The psych chart shows why .