1. What is Weight of Water Vapour?

Weight of Water Vapour is the weight of the form of a gas resulting from heating water or ice. It represents the actual mass of water vapor present in a given air sample.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W \) — Weight of Water Vapour (Kilogram)
• \( AH \) — Absolute Humidity (Kg of water vapour per Kg of air)
• \( W_{Air} \) — Weight of Bone Dry Air (Kilogram)

Explanation: The formula calculates the weight of water vapor by multiplying the absolute humidity (mass of water vapor per unit mass of dry air) by the weight of the bone dry air sample.

3. Importance of Weight of Water Vapour Calculation

Details: Calculating the weight of water vapor is crucial for various applications including HVAC system design, meteorological studies, industrial processes, and environmental monitoring where precise moisture content measurements are required.

4. Using the Calculator

Tips: Enter absolute humidity in Kg of water vapour per Kg of air and weight of bone dry air in Kilogram. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between absolute humidity and relative humidity?
A: Absolute humidity measures the actual mass of water vapor in a given mass of air, while relative humidity expresses the current water vapor content as a percentage of the maximum possible at that temperature.

Q2: Why is bone dry air important in this calculation?
A: Bone dry air provides a consistent baseline reference point that contains no water vapor, allowing for accurate calculation of the water vapor weight added to the air sample.

Q3: What are typical units for absolute humidity?
A: Absolute humidity is typically expressed in grams of water vapor per kilogram of dry air or pounds of water vapor per pound of dry air.

Q4: How does temperature affect water vapor calculations?
A: While this specific calculation doesn't directly involve temperature, temperature significantly affects the maximum possible water vapor content in air (saturation point) and thus influences absolute humidity measurements.

Q5: What industries commonly use this calculation?
A: This calculation is important in meteorology, HVAC, pharmaceutical manufacturing, food processing, and any industry where precise control of atmospheric moisture is critical.