What is psychometrics?

Psychrometric is the study of mixtures of air and water vapor. In air-conditioned air is not dry, but a mixture of air and water vapor, resulting in the importance of psychometrics. In some processes water is removed from the air, while in others it is added. The psychrometric chart is one of the most useful tools available to assist the technician in refrigeration and air conditioning in the air conditioning of the study. The relative humidity (f) expressed as a percentage, it is the ratio between the actual partial pressure of water vapor saturation pressure for the same temperature. Since the Absolute humidity: it is the ratio of water vapor mass and the mass of dry air. It is expressed as kg of steam per kg of dry air.