1. What is Wet Bulb Temperature?

Definition: Wet bulb temperature is the lowest temperature that can be reached by evaporating water into air at constant pressure.

Purpose: It's important in meteorology, HVAC, industrial processes, and understanding human comfort and heat stress.

2. How Does the Calculator Work?

The calculator uses the approximation formula:

Where:

• \( T_w \) — Wet bulb temperature (°C)
• \( T_d \) — Dry bulb temperature (°C)
• \( RH \) — Relative humidity (%)
• \( T_{w\_approx} \) — Initial approximation of wet bulb temperature (°C)

Explanation: This is a simplified iterative formula that approximates the wet bulb temperature without requiring psychrometric charts.

3. Importance of Wet Bulb Temperature

Details: Wet bulb temperature is crucial for understanding evaporative cooling potential, human thermal comfort, and dangerous heat conditions (when it exceeds 35°C, the human body cannot cool itself).

4. Using the Calculator

Tips: Enter the dry bulb temperature, relative humidity (0-100%), and an initial approximation (default 15°C). The calculator will estimate the wet bulb temperature.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this approximation?
A: This is a simplified method. For precise calculations, use psychrometric charts or more complex iterative methods.

Q2: What's a typical initial approximation value?
A: 15°C works well for most conditions, but you can get better results by using the dew point as an initial approximation.

Q3: Why is wet bulb temperature important for human health?
A: It indicates the lowest temperature the body can achieve through sweating. Values above 35°C can be life-threatening.

Q4: How does this differ from heat index?
A: Heat index considers temperature and humidity to show what it "feels like," while wet bulb measures actual cooling potential.

Q5: Can I use this for weather forecasting?
A: This provides a basic estimate, but professional meteorologists use more sophisticated models and measurements.