What is the Relative Humidity when the Dry Bulb Temperature is 80°F and the Wet Bulb Temperature is 70°F?

To determine the Relative Humidity based on the Dry Bulb Temperature and Wet Bulb Temperature, it is essential to understand the relationship between these temperatures. The Dry Bulb Temperature represents the current air temperature, while the Wet Bulb Temperature accounts for the cooling effect of evaporation and is typically lower than the dry bulb temperature under humid conditions.

In this case, with a Dry Bulb Temperature of 80°F and a Wet Bulb Temperature of 70°F, the difference between the two temperatures indicates a certain level of moisture in the air. The smaller the difference, generally the more humid the air is.

The calculation for Relative Humidity uses psychrometric principles, which often involves using tables or a psychrometric chart. These resources can help derive the Relative Humidity value directly from the two temperatures.

For the given temperatures, the calculated Relative Humidity is approximately 61%. This value indicates that the air is holding about 61% of the maximum water vapor it can hold at that Dry Bulb Temperature. It reflects the moisture content relative to the temperature and provides insights into comfort levels and processes in various industrial applications.

Understanding these concepts is crucial for effective temperature and humidity management in environments like manufacturing, HVAC systems, and food processing,