MEP Vocabulary - Week 4
Static Pressure
The resistance air encounters while traveling throughout a buildings HVAAC System
Dew Point
The temperature to which the air needs to cool down to in order to become completely saturated or reach 100 Percent relative humidity.
Zero Energy Buildings
Building that combine energy efficiency and renewable generation to consume only as much energy as can be produced onsite through renewable resources over a specified time period.
Passive House
A building that comprises a set of design principle used to attain a quantifiable and rigorous level of energy efficiency within a specific quantifiable comfort level.
Manometer
A device to measure pressure
Psychrometric Chart
A graphical representation of the physical and thermal properties of atmospheric air for a particular barometric pressure.
Vapor Retarder
A material intended to resist the diffusion of water vapor into a building assembly.
Air Changes per Hour
A measure of the air volume added to or removed from a space in one hour.
Joint Sealant
A rubberlike, adhesive material, usually applied in liquid or tape form, used to seal a joint, gap, or crack against the passage of air and water.
Perm Rating
A unit of vapor permeance, a measure of a materials permeability to the diffusion of water vapor.
Volumetric Flow Rate
The amount of fluid (air) which passes per unit time.
Enthalpy
The amount of energy or heat content embodied in a system
Condensation
The change of the physical state of matter from the gas phase into the liquid state, and is the reverse of vaporization
Friction Loss
The decrease in air pressure due to the friction of the air moving through a duct.
Blower Door Test
Used on buildings to quantify the amount of air leakage through its enclosure