What Is Absolute Humidity?

The mass of water vapor per cubic meter of wet air, that is, the density of water vapor, the unit is Kg / m³.

Absolute humidity

Humidity is a physical parameter that characterizes the water vapor content in the atmosphere, and absolute humidity is one of the many ways to characterize humidity.

Under certain conditions of pressure and temperature, there is a limit to the amount of water vapor that can be contained in a unit volume of air. If the water vapor contained in the volume of air exceeds this limit, the water vapor will condense and produce precipitation, The value of water vapor actually contained in this volume of air is expressed by absolute humidity. The higher the water vapor content, the higher the absolute humidity of the air. ^[1]

Use the water vapor equation of state. The calculation formula of absolute humidity a can be obtained directly:

1. Absolute humidity refers to the weight of water content per unit volume of gas, generally mg / L is used as an indicator. Relative humidity refers to the ratio of absolute humidity to the water vapor content in the saturated state at that temperature, expressed as a percentage.

2. Absolute humidity refers to the actual value of the weight of water vapor contained in a unit volume of air. Saturated humidity refers to the limit value of the amount of water vapor that can be contained in a unit volume of air under a certain pressure and a certain temperature.

3. Absolute humidity refers to the amount of water vapor (mg) per unit volume of air at a certain temperature. Relative humidity refers to the ratio of the actual water vapor content in the air to the saturation value at a certain temperature, expressed as a percentage.

4.Water vapor content refers to the total amount of moisture in a certain volume of air, such as the density of water vapor is one of these values called absolute humidity. Relative humidity is the actual water vapor content in an air sample and the same volume of saturated air at the same temperature and volume The percentage of water vapor is the most common amount of humidity that can be directly observed.

5. The amount of water vapor contained in a unit volume of a gas mixture is called absolute humidity. Relative humidity refers to the ratio of absolute humidity to the maximum humidity of fully saturated water vapor at a certain temperature, expressed as a percentage (%).

6. Absolute humidity refers to the amount of water in 1 cubic meter of air in the state of water vapor. The maximum amount of water vapor that 1 cubic meter of air can absorb is called the maximum humidity or saturation point. The maximum humidity depends largely on the temperature .

7. Absolute humidity refers to the density of water vapor in the air, which is expressed by the weight (g) of water vapor contained in 1m³ of air. The water vapor content is high, and the absolute humidity of the air is high. The water content in the air has a certain limit and reaches the maximum The capacity is called the saturated water vapor content.

8. Absolute humidity means that the absolute humidity measured per cubic meter of humidity is not greater than 29g. However, the hydrogen humidity of large hydrogen-cooled generators in water contained in hydrogen (mixture of dry hydrogen and water vapor) in China is generally higher than the standard steam quality.