Home
Back
Wet Bulb Temperature Calculation:
| From: | To: |
Wet bulb temperature (Tw) is the lowest temperature that can be reached by evaporating water into the air at constant pressure. It represents the temperature read by a thermometer covered in water-soaked cloth over which air is passed.
The calculator uses the wet bulb temperature formula:
Where:
Explanation: This empirical formula calculates wet bulb temperature based on dry bulb temperature and relative humidity measurements.
Details: Wet bulb temperature is critical for assessing human comfort, heat stress, industrial processes, and meteorological applications. It's particularly important for evaluating the risk of heat-related illnesses.
Tips: Enter the measured wet bulb temperature directly from the thermometer in degrees Celsius. Ensure the value is within the valid range of -50°C to 100°C.
Q1: What's the difference between dry bulb and wet 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.
Q2: Why is wet bulb temperature important for human health?
A: High wet bulb temperatures indicate conditions where evaporative cooling is less effective, increasing the risk of heat exhaustion and heat stroke.
Q3: How is wet bulb temperature measured?
A: Using a psychrometer - a thermometer with its bulb wrapped in a wet cloth, ventilated to allow evaporation.
Q4: What industries rely on wet bulb temperature measurements?
A: HVAC, meteorology, agriculture, industrial drying processes, and occupational health and safety.
Q5: How does wet bulb temperature relate to humidity?
A: The difference between dry and wet bulb temperatures indicates humidity levels - a small difference indicates high humidity, while a large difference indicates low humidity.