Appliance Use or Equipment Power Density

Appliance intensity during occupied hours. These can include things that turn on after the occupants arrive, like computer monitors, coffee machines, etc. The heat given off by appliances is also included in the buildings' cooling load and will impact the annual Cooling EUI.

Additionally, the hourly profile can be adjusted with the help of a dedicated equipment schedule.

The Appliance Use (W/ft2) input is located on the Baseline page, under the Usage and Schedules tab.

Appliance use is also sometimes referred to as plug load, receptacle power, or miscellaneous load.

The following table from ASHRAE Standard 90.1-2013 User's Manual (Table G-C) contains the recommendations for Appliance Use Density values for different building types:

The default value for appliance use for the building use types such as Apartments (Mid-Rise and High-Rise) and Single-Family Homes have been determined after the calibration with respective Pacific Northwest National Laboratory (PNNL) building prototypes.

Further information on typical appliance use for buildings, or the wattage of specific equipment (such as kitchen appliances) can be found in ASHRAE Fundamentals Handbook or CIBSE Guides.

For more information on kitchens see this paper which lists the energy consumption in MBtu/yr for common kitchen appliances:

Related Articles:

  1. Detailed Occupancy Schedules

  2. Cooling System

  3. Energy Use and EUI

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