US Department of Energy
This report is the first the three-volume set of reports on energy consumption in commercial building HVAC systems. This first volume focuses on energy use for generation of heating and cooling, i.e. in equipment such as boilers and furnaces for `heating and chillers and packaged air-conditioning units for cooling. The distinction is clear for most equipment types, such as unit heaters, boilers, and chillers. However, for packaged air-conditioning (AC) equipment the distinction can be subtle. For this study, only the refrigerant compressors of packaged equipment are considered.