[Bldg-sim] ASHRAE/IES Publish 90.1-2016 Energy Efficiency Standard
Jim Dirkes via Bldg-sim
bldg-sim at lists.onebuilding.org
Mon Oct 31 07:42:20 PDT 2016
Thanks, Jason.
Eventually, I'll read the Standard in detail. For now the summary is very
helpful.
On Mon, Oct 31, 2016 at 10:23 AM, Jason Glazer via Bldg-sim <
bldg-sim at lists.onebuilding.org> wrote:
>
> *ASHRAE/IES Publish 2016 Energy Efficiency Standard*
>
> ATLANTA – Numerous energy savings measures resulting from industry input
> are contained in the newly published energy efficiency standard from ASHRAE
> and IES.
>
> ANSI/ASHRAE/IES Standard 90.1-2016, *Energy Efficiency Standard for
> Buildings Except Low-Rise Residential Buildings*, contains 125 addenda
> published since the 2013 standard. The 2013 standard currently serves as
> the commercial building reference standard for state building energy codes.
>
> This 2016 version is the 10th edition published since the original
> standard was first published in 1975 during the energy crisis of the United
> States.
>
> "It is the overall goal of each version to create a consensus standard
> that saves energy and is technically feasible and cost effective,” Drake
> Erbe, chair of the Standard 90.1 committee, said. “In addition, as a result
> of a strategic initiative begun in the 2013 cycle, the 2016 version has a
> new format that we believe will be easier for users, a new way of
> incorporation of reference material from other standards starting with
> climate data, and a performance path for compliance that rewards designs
> for achieving energy cost levels above the standard minimum.”
>
> *Formatting*
>
> The standard has made significant formatting changes to improve its use.
> These include a one-column format for easier reading; exceptions separated
> and indented, set apart with a smaller font size; all defined terms are
> italicized; and alternating coloring scheme for table rows.
>
> The most significant technical changes included are as follows:
>
> - *Building Envelope*:
> - The mandatory provisions include the addition of envelope
> verification in support of reduced air infiltration and increased
> requirements for air leakage to overhead coiling doors.
> - The prescriptive requirements include increased stringency
> requirements for metal building roofs and walls, fenestration, and opaque
> doors. Requirements for Climate Zone 0 have been added.
> - Improved clarity of the standard ranged from defining exterior
> walls to building orientation to clarity around the effective R-value of
> air spaces
> - *Lighting:*
> - Modified control requirements that make the application of
> advanced lighting controls easier for increased energy savings
> - Modification of exterior and interior lighting power densities
> that reflect the efficiency gains from LED technology in specific
> applications where they are proven to be effective
> - Added minimum requirements for lighting in dwelling units to set
> limits on light source efficacy
> - Added additional control for lighting in parking areas based on
> occupancy to reduce energy use
> - *Mechanical:*
> - Chilled water plant metering – For the first time, the standard
> is requiring large electric driven chilled water plants to be monitored for
> electric energy use and efficiency.
> - DOAS requirements – Dedicated outdoor air systems were introduced
> over 25 years ago but there were no rating or efficiency requirements with
> which to comply. For the first time, this product class does have both
> efficiency and rating requirements with which they have to comply.
> - Elevator efficiency –Introduces requirements for designs to
> include both usage category and efficiency class. While a minimum
> threshold is not listed, it is the first step toward including minimum
> elevator efficiency requirement in a future standard. The standard
> referenced is an ISO standard since this the current industry standard for
> efficiency.
> - Economizer diagnostics – The standard is implementing
> requirements that air cooled DX cooling unit with economizers have a
> monitoring system to determine that the air economizer is properly working.
>
>
> - *Energy Cost Budget (ECB) and Modeling.* A significant change to the
> application of Appendix G as follows:
>
> o Appendix G now can be used as a path for compliance with the
> standard. Previously Appendix G was used only to rate “beyond code”
> performance of buildings. This new version of Appendix G can show
> compliance with the 2016 version of the standard in the following manner:
>
> o The proposed building design requires a new metric the Performance
> Cost Index (PCI) and demonstration that it is less than that shown in Table
> 4.2.1.1 based on building type and climate zone.
>
> o Another change is that the baseline design is now fixed at a certain
> level of performance, the stringency or baseline of which is expected not
> to change with subsequent versions of the standard. By this, a building of
> any era can be rated using the same method.
>
> o Other modifications to Appendix G include: elevator, motor, and
> refrigeration baselines; changes to the baseline for existing building
> projects; as well as specific opaque assemblies for the baseline envelope
> model. Modeling rule changes were also made to heat pump auxiliary heat,
> economizer shutoff, lighting controls, humidification systems, cooling
> towers, and the simulation of preheat coils.
>
> Additional * structural changes* include:
>
> o Reference Standard Reproduction Annex 1 at the end of the document.
> This annex is designed to contain extracts from other references that are
> published with Standard 90.1 for the convenience of users. At present, the
> only standard this pertains to is ANSI/ASHRAE Standard 169, *Climatic
> Data for Building Design Standards*. Section 5.1.4 now cites this
> standard as the source for climatic data therefore extractions of tables
> and figures from Standard 169-2013 are included in Annex 1
>
> o Addition of 2 weather zones 0 A/B in all prescriptive requirements
> tables to correspond with Standard 169.
>
> The cost of is $119, ASHRAE members ($140, non-members). To order, visit
> www.ashrae.org/bookstore or contact ASHRAE Customer Contact Center at
> 1-800-527-4723 (United States and Canada) or 404-636-8400 (worldwide) or
> fax 678-539-2129.
>
> ASHRAE, founded in 1894, is a global society advancing human well-being
> through sustainable technology for the built environment. The Society and
> its more than 56,000 members worldwide focus on building systems, energy
> efficiency, indoor air quality, refrigeration and sustainability. Through
> research, standards writing, publishing, certification and continuing
> education, ASHRAE shapes tomorrow’s built environment today. More
> information can be found at www.ashrae.org/news.
>
>
>
>
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--
James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504
Direct: 616.450.8653
jim at buildingperformanceteam.com
Website <http://buildingperformanceteam.com>l LinkedIn
<https://www.linkedin.com/pub/jim-dirkes/7/444/413> | May 2016 ASHRAE
Journal article on energy modeling
<http://buildingperformanceteam.com/bpt-insights-blog/item/73-modeled-performance-isn-t-actual-performance>
…an open mind is not an end in itself but rather is like an open
mouth, designed to bite down on something solid and nourishing.
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