ashrae_leed - I for Energy Savings and LEED Credits The...

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Energy Savings and LEED Credits The Energy Cost Budget Method outlined in Standard 90.1- 2001 can-when properly applied-slash energy costs, benefit the environment, and earn LEED-NC credits \/7f\f/ .7hile many engineers and architects met or exceeded Standard 90.1-1999 byJuly 2004 \\l -/t0:\1 l/throughout the United States have (see sidebar). L.J\.J used ANSI/ASHRAE/IESNA With this increased interest in Standard 90.1- Standard 90.1, EnergyStandardforBuildingsExcept 1999, the U.S. Green Buildings Council, through Low-Rise Residential Buildings, as the basis of their its Leadership in Energy and Environmental De- building design, there remains some confusion sign (LEED) rating system, created the Green about the proper application and re- Building Design Program, which quirements of the standard, espe- By PETER W. MCDONNELL PE provides up to 10 points (out of the cially surrounding the Energy Cost McClure Engineering Associates. 26 needed for basic LEED certifica- Budget Method (ECBM). As St Louis, Mo. tion) in the LEED-NC credit for ASHRAE prepares to release the 2004 edition of optimizing energy performance (Credit EA-1). 90.1, let's take a quick review of the standard. Chapter 11 of Standard 90.1 deals with the ECBM. This may be the least understood portion HISTORY OF STANDARD 90.1 of the standard. ECBM is a critical requirement of Standard 90.1 originated in 1975 in response to the energy crisis of the early 1970s. It was revised in 1980 (taking longer than the usual ASHRAE stan- dards cycle of the time), but became more promi- nent in building designs with the co-sponsorship of the Illuminating Engineering Society of North America (IESNA) in the 1989 edition and as a re- sult of its adoption within the building codes of many regions of the country. In 1999, ASHRAE placed the standard on con- tinuous maintenance in conjunction with the American National Standards Institute (ANSI). The U.S. Department of Energy (DOE) also re- viewed the 1999 edition and determined that it was in the country's best interests to require all states to implement a state energy code requirement that The ECBM is a comparative modeling system in which two models of the same building are created and compared. LEED-NC Credit EA-1. Standard 90.1 now re- quires (per addendum 1) that the energy simula- tion program utilized be tested in accordance with ANSI/ASHRAE Standard 140-2001, Standard Method of Testjir the Evaluation ofButildingEnergy A Peter WMcDonnel/, PE, is a senior mechanical engineerforMcClureEngineeringAssociates in St. Louis. He is - aLEEDAccreditedProfessionalandapastadjunctprofessorofconstriction engineeringatthe Univerity ofCen- tral Florida. He hasspoken several times onAANSI/ASHRAE/IESNA Standard 901, incluidingat HPAC Engineering's Engineering Green Buildings Conference in July2004. He can be reached at [email protected] mcclureeng.com. HPAC
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ashrae_leed - I for Energy Savings and LEED Credits The...

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