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Dry Bulb and Wet Bulb Calculator

Dew Point Formula (Approximate):

\[ \text{Dew Point} = \text{Wet} - \left(\frac{\text{Dry} - \text{Wet}}{3}\right) \]

°C
°C

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1. What is a Dry Bulb and Wet Bulb Calculator?

Definition: This calculator estimates the dew point temperature using measurements from dry bulb and wet bulb thermometers.

Purpose: It helps determine atmospheric moisture levels, which is important for HVAC, meteorology, and industrial processes.

2. How Does the Calculator Work?

The calculator uses the approximate formula:

\[ \text{Dew Point} = \text{Wet} - \left(\frac{\text{Dry} - \text{Wet}}{3}\right) \]

Where:

Explanation: The difference between dry and wet bulb temperatures indicates humidity, which is used to calculate the dew point.

3. Importance of Dew Point Calculation

Details: Knowing the dew point helps prevent condensation issues, determines comfort levels, and is critical for many industrial processes.

4. Using the Calculator

Tips: Enter both wet bulb and dry bulb temperatures in Celsius. Dry bulb must be equal to or greater than wet bulb temperature.

5. Frequently Asked Questions (FAQ)

Q1: Why is this formula approximate?
A: This is a simplified calculation. More precise methods use psychrometric charts or complex equations.

Q2: What's the difference between dry and wet bulb temperatures?
A: Dry bulb measures air temperature, while wet bulb measures temperature cooled by evaporation (always ≤ dry bulb).

Q3: When would I need to know the dew point?
A: Important for HVAC design, weather forecasting, painting applications, and preventing condensation in buildings.

Q4: How accurate is this calculation?
A: Within about ±1°C for typical conditions (10-30°C range, 30-70% relative humidity).

Q5: Can I use Fahrenheit temperatures?
A: This calculator uses Celsius. Convert Fahrenheit to Celsius first (°C = (°F - 32) × 5/9).

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