How does pressure affect condensation?

How does pressure affect condensation?

The higher the vapor pressure, the faster the rate of condensation. Condensation occurs when a water vapor molecule collides with a liquid water surface, and chemically binds to liquid water molecules.

What determines condensation rate?

The rate of condensation can be defined as the number of water vapor molecules that change phase from gas to liquid each second. The rate of condensation depends mainly on the vapor pressure in the space above the liquid surface. The initial vapor pressure is zero. Consider the rates of evaporation and condensation.

What are the prerequisites for condensation?

1. Firstly, the presence of water vapour in the atmosphere is required for condensation to occur. 2. Secondly, low temperature is important as it decreases the moisture holding capacity of the air which leads to condensation.

What are prerequisites for condensation?

What is the dew point for condensation?

Dew Point is the temperature at which moisture will condense out of the air. If the temperature of any surface is at or below the dew point temperature then dew (condensation) will form. Here are some examples of Dew Point conditions: 85°C and 85% RH, the Dew Point is 80.9°C.

Does pressure increase in condensation?

The rate of condensation depends mainly on the vapor pressure in the space above the liquid surface. The vapor pressure increases as the concentration of water vapor in the space above the liquid increases.

What is condensation pressure?

The pressure at which a parcel of moist unsaturated air expanded dry-adiabatically reaches saturation. See condensation temperature, lifting condensation level.

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