Absolute humidity
Pathology of humidity. Simple wall. Phenomenon of condensation.
Article REF: C7130 V1
Absolute humidity
Pathology of humidity. Simple wall. Phenomenon of condensation.

Author : Paul DAHAN

Publication date: May 10, 2008 | Lire en français

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1. Absolute humidity

Air is a mixture of gases containing, in particular, water vapor in suspension.

Absolute humidity" is defined as the quantity of water vapour contained in the air. It is expressed in g/m 3 . The letter "W" is used to designate absolute humidity.

At a given temperature, 1 m 3 of air can only contain a limited amount of water vapor. This limit is called the "saturation limit", and, is noted W s . It increases very rapidly with temperature under normal atmospheric pressure conditions (1,013.2 hPa or 760 mmHg at sea level at 15°C).

Nota

millimeter of mercury (mmHg).

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