Specific Volume & Density – Specific volume is measured in cubic feet per pound.Dew Point – At this temperature, moisture starts condensing from the air.Wet Bulb – This is a typical thermometer’s standard reading if the sensing bulb is covered with a wet wick or sock and exposed to air flow.High temperatures that range from 60 degrees FDB to 250 degrees FDB.
Normal temperatures that range from 20 degrees FDB to 100 degrees FDB.Low temperatures that range from -20 degrees FDB to 50 degrees FDB.You can find a psychrometric chart that offers these temperature ranges: Dry Bulb – This is the temperature reading found on a typical thermometer.What Are the Parts of a Psychrometric Chart?Ī psychrometric chart consists of eight standard parts, including:
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Knowing how to read a psychrometric chart is a wise skill for engineers to have in the event that technology fails or isn’t available. While there are online calculators and applications to help make calculations, using the chart correctly provides engineers with a more accurate reading as long as you know two parameters of air. The Benefits of Using a Psychrometric Chart CorrectlyĪ psychrometric chart prevents engineers from spending time on tedious mathematical formulas. If you know two parameters of air where the lines will cross each other, the psychrometric chart can do the rest of the work for you. While this chart looks complicated and even intimidating, it’s actually quite helpful and simple to understand once you grasp the basic properties of air. With this chart, engineers can better assess psychrometric processes and find practical solutions. A psychrometric chart represents the psychrometric properties of air.
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