When reading a psychrometric chart, it is the diagonal line that intersects the curved leftmost line.ĭew-point Temperature, T dp:The measure of the dry-bulb temperature at the point that water vapor starts to condense to liquid or be removed from the air. It is used to determine the humidity and adiabatic saturation properties of air. Wet-bulb Temperature, T wb: The temperature measured by a thermometer with its bulb covered in a wet wick exposed to moving air. When reading a psychrometric chart, it is the horizontal axis at the bottom of the chart. It represents the sensible heat component of the air. Please pardon the dust while we complete this work :)ĭry-bulb Temperature, T db: The temperature of the air as measured by a standard thermometer. ![]() ** CONSTRUCTION ZONE ** We are actively updating the information below. ![]() The following psychrometric chart equations and terms have been adapted from the ASHRAE Fundamentals Handbook (I-P Edition), Chapter 1, Psychrometrics.
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