1. What is Wet Bulb Temperature?

Wet bulb temperature 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.

2. How Does the Calculator Work?

The calculator uses the approximation formula:

Where:

• \( T \) — Dry bulb temperature (°C)
• \( T_w \) — Wet bulb temperature (°C)
• \( RH \) — Relative humidity (%)

Explanation: This iterative approximation calculates the wet bulb temperature based on the cooling effect of evaporation at different humidity levels.

3. Importance of Wet Bulb Temperature

Details: Wet bulb temperature is crucial for assessing heat stress on humans and animals, designing HVAC systems, agricultural applications, and industrial processes involving evaporation.

4. Using the Calculator

Tips: Enter temperature in °C and relative humidity as a percentage (0-100%). The calculator uses an iterative method to approximate the wet bulb temperature.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between dry bulb and wet bulb temperature?
A: Dry bulb measures actual air temperature, while wet bulb measures the temperature after evaporative cooling.

Q2: Why is wet bulb temperature important for human health?
A: High wet bulb temperatures indicate conditions where evaporative cooling becomes less effective, increasing heat stress risk.

Q3: What's considered a dangerous wet bulb temperature?
A: Wet bulb temperatures above 35°C are considered extremely dangerous as they approach human physiological limits.

Q4: How accurate is this approximation?
A: This provides a reasonable approximation but for precise measurements, specialized psychrometric calculations should be used.

Q5: Can this be used for weather forecasting?
A: Yes, meteorologists use wet bulb temperature to predict frost, fog, and assess heat index conditions.