If the dry bulb is 80 degrees and the humidity is 30%, what will the wet bulb be according to the psychrometric chart?

To determine the wet bulb temperature when you have a dry bulb temperature of 80 degrees Fahrenheit and a humidity of 30%, you would refer to a psychrometric chart. The dry bulb temperature represents the actual air temperature, while the wet bulb temperature takes humidity into account and represents the lowest temperature to which air can be cooled by evaporative cooling.

At 30% relative humidity and a dry bulb of 80 degrees, the wet bulb temperature will be lower than the dry bulb temperature because the presence of humidity in the air influences the moisture content and cooling potential.

When looking at the psychrometric chart, you would find that at 80 degrees Fahrenheit and 30% humidity, the wet bulb reading aligns more closely with 60 degrees Fahrenheit. This indicates a significant enough difference due to the lower humidity levels. The wet bulb temperature reflects the combined effect of air temperature and humidity, resulting in airflow cooling potential.

Therefore, the correct interpretation based on the psychrometric data confirms that the wet bulb would be approximately 60 degrees Fahrenheit under the given conditions. This value illustrates how the moisture level in the air impacts the temperature measurements and their implications for HVAC calculations and systems performance.