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ANSI/ASHRAE/IES Standard 90.1: Energy Standard for Buildings Except Low-Rise Residential Buildings is an American National Standards Institute (ANSI) standard published by ASHRAE and jointly sponsored by the Illuminating Engineering Society (IES) that provides minimum requirements for energy efficient designs for buildings except for low-rise residential buildings (i.e. single-family homes ...
Advanced lighting control is an effort made by ASHRAE 90.1-2010 to significantly reduce the energy used for lighting by commercial buildings. [ 20 ] The U.S. Department of Energy is improving residential codes by 30% by 2012, in an effort to move to net zero energy homes by 2020.
ASHRAE 90.1 follows a similar path of development and revision. [6] Though ASHRAE 90.1 is revised and published every three years just like the IECC, people can submit interim revisions at any time within this period. [5] ASHRAE has a standards committee that manages the process, and votes on the final versions of the energy code. [5]
Space By Space Method. A defined list of many possible space types within a building the associated watts per square foot allowance. For example, ANSI/ASHRAE/IESNA Standard 90.1-2007 allows the Emergency Space of a hospital to be designed for 2.7 watts per square foot, but the Recovery areas of a hospital would be allowed 0.8 watts per square foot.
ASHRAE was founded in 1894 at a meeting of engineers in New York City, formerly headquartered at 345 East 47th Street, and has held an annual meeting since 1895. [4] Until 1954 it was known as the American Society of Heating and Ventilating Engineers (ASHVE); in that year it changed its name to the American Society of Heating and Air-Conditioning Engineers (ASHAE). [5]
A module for Appendix G of ASHRAE 90.1-2010 is available, this is used for example in LEED and BREEAM. The integrated radiosity method with single reflection and one measuring point can be used for whole-year daylight analysis and allows modeling daylight-based control strategies (e.g. shading devices, artificial lightening).
Daylight harvesting systems are typically designed to maintain a minimum recommended light level. [1] This light level will vary according to the needs and use of the space; for example, the commonly recommended light level for offices is 500 Lux (or around 50 foot-candles) on the desktop.
Significantly low lighting power densities; These features will make this cluster 21.7% more energy efficient than the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) 90.1 - 2004 standards.