Home
Back
Effective Temperature Equation:
| From: | To: |
Effective Temperature (ET) is a measure that combines dry bulb temperature and wet bulb temperature to approximate the perceived temperature by humans. It accounts for both temperature and humidity effects on thermal comfort.
The calculator uses the Effective Temperature equation:
Where:
Explanation: The equation adjusts the dry bulb temperature based on the difference between dry and wet bulb temperatures, which reflects humidity levels.
Details: Effective Temperature is important for assessing thermal comfort in various environments, particularly in occupational health, sports science, and climate studies where humidity affects perceived temperature.
Tips: Enter dry bulb temperature and wet bulb temperature in degrees Celsius. Both values should be measured using appropriate instruments like a psychrometer.
Q1: How is Effective Temperature different from Heat Index?
A: While both measure perceived temperature, Effective Temperature uses dry and wet bulb temperatures directly, while Heat Index uses temperature and relative humidity.
Q2: What are typical Effective Temperature ranges for comfort?
A: Comfort ranges vary by individual, but generally ET values between 20-26°C are considered comfortable for most people.
Q3: When should Effective Temperature be measured?
A: It's particularly useful in hot, humid environments where high humidity increases perceived temperature beyond the actual dry bulb reading.
Q4: Are there limitations to this equation?
A: This is a simplified approximation and doesn't account for factors like wind speed, solar radiation, or individual metabolic rates.
Q5: Can this be used for cold weather assessment?
A: The equation is primarily designed for warm conditions. For cold weather, wind chill factors are more appropriate for assessing perceived temperature.