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UK Approximate Formula:
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Wet bulb temperature is the lowest temperature that can be reached by evaporating water into the air. It's an important meteorological measurement that combines air temperature and humidity to assess heat stress and cooling potential.
The calculator uses the UK approximate formula:
Where:
Explanation: This simplified formula provides a quick approximation of wet bulb temperature commonly used in the UK for basic calculations.
Details: Wet bulb temperature is crucial for assessing human heat stress, designing cooling systems, agricultural applications, and industrial processes where evaporative cooling is involved.
Tips: Enter dry bulb temperature in °C and relative humidity as a percentage (0-100%). The calculator will provide the approximate wet bulb temperature.
Q1: How accurate is this approximation?
A: This is a simplified formula that provides reasonable approximations for typical UK conditions but may not be precise for extreme temperatures or humidity levels.
Q2: What's the difference between wet bulb and dry bulb temperature?
A: Dry bulb temperature is the ambient air temperature, while wet bulb temperature accounts for evaporative cooling effects and is always equal to or lower than dry bulb temperature.
Q3: When is wet bulb temperature most important?
A: Critical for heat stress assessment, cooling tower performance, HVAC design, and weather forecasting during hot, humid conditions.
Q4: Are there more precise calculation methods?
A: Yes, more complex psychrometric equations and charts provide greater accuracy, especially for engineering applications.
Q5: What are dangerous wet bulb temperature levels?
A: Wet bulb temperatures above 35°C are considered extremely dangerous as they approach the limit of human survivability.