Global Terms

Term Term Definition Options Unit of Measure
Dimension

A linear measurement in one direction. Can be used to generically describe this measurement, if needed.

View ft
Duty Cycle

Percent of time the system operates.

View percent
Effective R Value

The R-value of a complete construction including all material layers as well as the interior and exterior air film coefficients.

View hr-ft2-F/Btu
Efficiency Metric Qualifier

The measure used to quantify efficiency

View None
Efficiency Qualifier

Variations in the quantification of the effectiveness with which equipment, a product, process, or system performs.

View None
Efficiency Value

The numeric value associated with an Efficiency Qualifier, given in the associated Efficiency Metric

View Unknown
Eh

Illuminance (horizontal)

View fc
Emittance

The capacity of a material to emit radiant energy. The ratio of the radiant flux emitted by a physical surface to that emitted by a blackbody at the same temperature and under the same conditions. It can be expressed as 1-(long-wave infrared absorptance) for materials that are not transparent in the long-wave infrared spectrum. Emittance is a surface property; values range from 0.05 for brightly polished metals to 0.96 for flat black paint. The emittance for most materials is 0.9.

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Energy Software Tool

A software program that is used in some fashion to calculate the energy consumption of a building

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Energy Software Tool Version

The release version of the software tool used to calculate energy performance of a building.

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Equipment Rating

Formalized rating system for a given type of equipment.

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Equivalent Melanopic Lux

EML - The WELL Building Standard uses Equivalent Melanopic Lux (EML) as a metric for measuring the biological effects of light on humans

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Ev

Illuminance (vertical)

View fc
Exposure

Exposure of a material or surface. See the Location term for a complete list of options for this term.

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Height

The dimension of an object from the bottom to the top. This can be used to define the height of any building component, such as the height of a wall or window.

View ft
Illuminance

The area density of the luminous flux incident at a point on a surface. Measured in units of either lumens per square meter (lux) or lumens per square foot (footcandle).

View fc
Input Resource Type

Resource or fuel consumed by the system. See Resource type for complete list of resources.

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Insulation Application

A description of the type of insulation and how it is applied.

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Insulation Continuity

Insulation installation type.

View None
Length

The longest dimension of an object. This can be used to define the length of any building component, such as ductwork or piping, or an opaque surface such as a wall or floor.

View ft
Location

Spatial location or installation location. This can apply to systems, opaque surfaces, etc.

View None
Luminance

The photometric measure of the luminous intensity per unit area of light travelling in a given direction, expressed in candelas per square meter (cd/m2). 

View cd/m2
Make

Equipment identification indicating manufacturer and or high-level category of equipment

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Manufacturer

Manufacturer of the product.

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Model Number

Model or catalogue number that can be used to identify more detailed component or asset characteristics.

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