Automatic shutoff capability for all interior building lighting (with exceptions) is required by ASHRAE Standard 90.1-2007 (as well as previous versions back to 1999) and the 2009 International Energy Conservation Code (including versions back to 2003) for buildings over 5,000ft2.
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The 2009 International Energy Conservation Code requires openings in the building envelope to be sealed to prevent air leakage into and out of the space, including an air barrier at insulation installations.
A demand control ventilation (DCV) system is an integral part of a building’s ventilation design. It adjusts outside ventilation air based on the number of occupants and the ventilation demands that those occupants create
Duct insulation and sealing, especially insulated supply ducts delivering conditioned air within a building, save energy. The intent of energy efficiency codes, as related to duct insulation and sealing, is to keep mechanically warmed or cooled air as close to a constant, desired temperature as possible and prevent the conditioned air from escaping the duct system while it is being moved to spaces where it is needed. If reduced heat transfer through insulated ducts is accounted for in the heating, ventilating, and air conditioning (HVAC) load calculations, it may even be possible to reduce the size of HVAC equipment.
The 2009 International Energy Conservation Code (IECC) requires cooling systems in commercial buildings to have economizers, depending on climate zone and cooling system capacity. Economizers save cooling system energy by using outdoor air to cool a building when outdoor conditions are favorable.
The intent of the pipe insulation requirements is to reduce temperature changes while fluids are being transported through piping associated with heating, cooling or service hot water (SHW) systems, thereby saving energy and reducing operating costs.
Kitchen and dining facilities use a large amount of energy per floor area. Kitchen exhaust hoods contribute greatly to that energy use. Energy is used both to operate fans and to heat and cool makeup air that is then exhausted.
ASHRAE Standard 90.1-2010 and the commercial provisions of the 2012 International Energy Conservation Code require that the building envelope be carefully designed to limit uncontrolled air leakage into and out of the building.
The appropriate treatment of task lighting for energy code compliance has always been a potentially confusing issue. The intent of ASHRAE Standard 90.1-2007 (as well as previous editions back to 1999) and the International Energy Conservation Code (IECC) (including editions back to 2003) is for task lighting to be included in compliance calculations when it is part of the lighting design. This applies to office spaces where task lighting is common, as well as other spaces where task lighting may appear in various forms.
ASHRAE modified its ventilation procedure to reflect more current data available on indoor air quality. The Standard was developed under American National Standards Institute guidelines and released in 2004: ASHRAE Standard 62.1-2004, Ventilation for Acceptable Indoor Air Quality.
The intent of the vestibule requirement is to reduce infiltration of air into a space, thereby addressing energy conservation and comfort issues for occupants located near primary entrance doors. The majority of infiltration comes through primary entrance doors that are typically used to access public areas, and have higher usage rates than doors classified for personnel use. Vestibules can reduce the infiltration losses (or gains) from wind and stack effects by creating an air lock entry.