Lighting is one of the major contributors to the internal heat gains of the building. Most energy codes set the maximum amount on lighting energy consumption in terms of 'Lighting Power Density (LPD)'. Cove.tool automatically loads the defined maximum LPD when the user selects the energy code from the 'Project' page.
Lighting (Occupied Hrs): This is an automated input by cove.tool based on the maximum LPD value. This value varies based on the building type and the energy code version.
Lighting (Unoccupied Hrs): This is an automated input by cove.tool which is determined after the calibration of the models with respective Pacific Northwest National Laboratory (PNNL) building prototypes.