Sunday, January 24, 2016: 1:30 PM-3:00 PM
Standards, Guidelines and Codes
Chair:
Neil P. Leslie, P.E., Gas Technology Institute
Technical Committee: 02.08 Building Environmental Impacts and Sustainability
By agreement with ICC, ASHRAE Standard 189.1 provides the technical content of the next version of the International Green Construction Code. IgCC and Standard 189.1 have many similar provisions but also have major differences in some of the compliance requirements and calculation methodologies. This seminar provides an overview of the agreement between ICC and ASHRAE and its implications for future revisions to Standard 189.1. Key differences in the energy performance requirements between IgCC and Standard 189.1 are reviewed, along with options for updates to energy performance provisions within Standard 189.1.
1 Overview of the 189.1/IgCC Alignment: Who's Doing What
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Andrew Persily, Ph.D., National Institute of Standards and Technology |
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Lawrence Schoen, P.E., Schoen Engineering Inc |
In order to increase the impact of Standard 189.1, the IgCC and LEED, an MOU was signed in 2014 by AIA, ASHRAE, ICC, IES and USGBC to align these three efforts. Since then, these organizations have been working to implement the MOU. At the same time, the Standard 189.1 committee has been revising the 2014 standard to reflect new technical information, including the consideration of approaches used in the IgCC that are different from those in 189.1. This presentation will clarify what these organizations have agreed to and how the 189.1 committee is working to support that agreement.
2 ASHRAE Standard 189.1-2014 Energy Cost and Greenhouse Gas Emission Performance Requirements and Rationale
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Molly McGuire, P.E., Jones Lang LaSalle |
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Charles Eley, P.E., Eley Consulting |
Standard 189.1 energy performance compliance requirements include energy cost performance and CO2 emissions compared to a baseline building using energy modeling rules and other underlying assumptions. This approach was intended to account for the economic interests of the owner as well as the environmental impact of the proposed building while being sensitive to local conditions and building characteristics. This presentation will review the underlying assumptions, key variables and metrics, and rationale for selection of performance requirements that differ from those in the 2015 version of IgCC.
3 IgCC Source Energy and GHG Emissions Performance Requirements and Rationale
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Richard C. Morgan, South-central Partnership for Energy Efficiency as a Resource |
The IgCC Sustainable Building Technology Committee concluded that the needs of the environment, the jurisdictions adopting the IgCC, building owners and design teams would be best served by a methodology for calculating building energy use that, as closely as possible, reflected the actual energy use of the building and the emissions resulting from that energy use. This presentation will discuss the process and rationale that led IgCC to adopt the zEPI scalar as the energy efficiency compliance metric and calculate source energy and regional emissions based on the EPA e-GRID database of power generation environmental characteristics.