Dew Point Formula (Approximate):
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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.
The calculator uses the approximate formula:
Where:
Explanation: The difference between dry and wet bulb temperatures indicates humidity, which is used to calculate the dew point.
Details: Knowing the dew point helps prevent condensation issues, determines comfort levels, and is critical for many industrial processes.
Tips: Enter both wet bulb and dry bulb temperatures in Celsius. Dry bulb must be equal to or greater than wet bulb temperature.
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).