Home
Back
Wet Bulb Humidity Formula:
| From: | To: |
Wet bulb temperature is the lowest temperature that can be reached by evaporating water into the air. The difference between dry bulb and wet bulb temperatures is used to calculate relative humidity, which is a measure of how much moisture the air contains relative to its maximum capacity.
The calculator uses the psychrometric formula:
Where:
Explanation: This formula provides an approximate calculation of relative humidity based on the temperature difference between dry and wet bulb thermometers.
Details: Humidity measurement is crucial for various applications including weather forecasting, HVAC system design, industrial processes, agricultural planning, and human comfort assessment.
Tips: Enter both dry bulb and wet bulb temperatures in Celsius. The wet bulb temperature should always be equal to or lower than the dry bulb temperature.
Q1: How accurate is this calculation method?
A: This formula provides an approximation. For more precise calculations, detailed psychrometric charts or more complex equations should be used.
Q2: What is the typical range for relative humidity?
A: Relative humidity typically ranges from 0% (completely dry air) to 100% (saturated air, often resulting in fog or precipitation).
Q3: Why does wet bulb temperature matter?
A: Wet bulb temperature is important for understanding evaporative cooling potential and human comfort in hot environments.
Q4: How does humidity affect human comfort?
A: High humidity makes temperatures feel warmer because sweat evaporates more slowly, while low humidity can cause dry skin and respiratory discomfort.
Q5: When is this approximation not suitable?
A: This simple formula may be less accurate at extreme temperatures or very high/low humidity levels. For scientific or engineering applications, use more precise methods.