Relier Pairs Air Distribution Systems - section 1Version en ligne Trade terms - Air Distribution Systems - section 1 par Valerie Jimenez 1 Static pressure 2 Relative humidity (RH) 3 External static pressure (ESP) 4 Revolutions per minute (rpm) 5 Blower door 6 Cubic feet per minute (cfm) 7 Wet-bulb temperature 8 Velocity pressure 9 Velocity 10 Total pressure 11 Dry-bulb temperature 12 Dew point 13 Psychometric chart 14 Pilot tube The pressure exerted uniformly in all directions within a duct system, usually measured in inches of water column (in. w.c) The temperature measured using a standard thermometer. It represents the measure of sensible heat present. The pressure in a duct due to the linear movement of the air. It is the difference the total pressure and the static pressure. The number of rotations made by a spinning object over the course of one minute. Temperature taken that takes into account he moisture content of the air, it reflects the total heat content (sensible & latent) of the air. The temperature at which air becomes saturated with water vapor, and the water starts t condense into droplets; at state of 100% relative humidity The total resistance of all objects and ductwork in the air distribution system beyond the blower assembly. A unit of measure for the volume of air flowing pas a point in one minute. An assembly containing a fan used to depressurize a building by drawing air out, to support duct leak testing. The speed that the air is moving. The rate of airflow is usually measured in feet per minute (fpm) A graphic method of showing the relationship of various air properties. A tool used to take pressure measurements in a moving air stream. The sum of the static pressure and the velocity pressure in an air duct. The ratio of the amount of moisture present in a given sample of air to the amount it can hold at saturation. Expressed in percent.
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