The formula to calculate the Energy Use Intensity (EUI) is:
\[ EUI = \frac{TE}{TFLA} \]
Where:
Let's say the total annual energy consumption (\( TE \)) is 5000 GJ and the total floor area (\( TFLA \)) is 2000 ft². Using the formula:
\[ EUI = \frac{5000}{2000} = 2.5 \text{ GJ/ft²} \]
So, the Energy Use Intensity (\( EUI \)) is 2.5 GJ/ft².
Energy Use Intensity (EUI) is a measure of the total energy per unit of area that a building consumes on an annual basis. The energy is typically measured in units of gigajoules (GJ) or kBtu. The area units are most often square feet or square meters. EUI is an important metric for assessing the energy efficiency of buildings.
Definition: Energy Use Intensity (EUI) is a measure of a building's energy efficiency, expressed as energy consumption per unit area.
Formula: \( \text{EUI} = \frac{\text{Total Energy Consumption}}{\text{Total Floor Area}} \)
Example: \( \text{EUI} = \frac{50000}{1000} \)
Definition: Energy intensity is the amount of energy consumed per unit of output or activity.
Formula: \( \text{Energy Intensity} = \frac{\text{Energy Consumption}}{\text{Output}} \)
Example: \( \text{Energy Intensity} = \frac{20000}{500} \)
Definition: Useful energy intensity measures the useful energy consumed per unit of output.
Formula: \( \text{Useful Energy Intensity} = \frac{\text{Useful Energy Consumption}}{\text{Output}} \)
Example: \( \text{Useful Energy Intensity} = \frac{15000}{500} \)
Definition: This formula calculates intensity in terms of energy.
Formula: \( I = \frac{P}{A} \)
Example: \( I = \frac{100}{20} \)
Definition: Electric intensity is the electric field strength at a point in space.
Formula: \( E = \frac{F}{q} \)
Example: \( E = \frac{10}{2} \)
Definition: Intensity is the power transferred per unit area.
Formula: \( I = \frac{P}{A} \)
Example: \( I = \frac{50}{10} \)
