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<h1><span style='font-size:10.0pt;font-family:"Arial","sans-serif";font-weight:
normal'>NREL also released two 50% TSDs for commercial buildings. See
press release excerpts below from EERE News:<o:p></o:p></span></h1>
<h1><span style='font-size:16.0pt;font-family:"Arial","sans-serif"'>DOE, NREL
Release Reports on Cutting Energy Use in Half in Commercial Buildings<o:p></o:p></span></h1>
<h3><span style='font-family:"Arial","sans-serif"'>September 24, 2010<o:p></o:p></span></h3>
<p><em><span style='font-size:9.5pt;font-family:"Arial","sans-serif";
color:#3C4349'>Reports detail strategies to save energy in large office
buildings and large hospitals</span></em><span style='font-size:9.5pt;
font-family:"Arial","sans-serif";color:#3C4349'><o:p></o:p></span></p>
<p><span style='font-size:9.5pt;font-family:"Arial","sans-serif";color:#3C4349'>The
U.S. Department of Energy and its National Renewable Energy Laboratory (NREL)
have released two technical reports that provide recommendations on how to
achieve 50% energy savings in large office buildings and large hospitals.
Conducted by NREL's Commercial Buildings Group, under the direction of DOE's
Building Technologies Program, the studies support DOE's goal of significantly
improving the energy efficiency of new and existing commercial buildings across
the United States. <o:p></o:p></span></p>
<p><span style='font-size:9.5pt;font-family:"Arial","sans-serif";color:#3C4349'><a
href="http://www.nrel.gov/docs/fy10osti/49213.pdf">Technical Support Document:
Strategies for 50% Energy Savings in Large Office Buildings<span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:windowtext;
text-decoration:none'><span style='font-size:9.5pt;font-family:"Arial","sans-serif";
color:#BA4F16'><img border=0 width=13 height=14 id="Picture_x0020_2"
src="cid:image001.gif@01CB6A0A.088740D0" alt=PDF></span></span></a> evaluates
the potential for new large office buildings to achieve a 50% net onsite energy
savings compared to a baseline standard (as defined by ANSI/ASHRAE/IESNA
Standard 90.1-2004). The report found 50% energy savings can be achieved in
both low-rise and high-rise office buildings in a broad range of U.S. climates.
The analysis was conducted in 16 cities that represented different climate
zones, such as hot and humid, hot and dry, marine, cold and humid, and cold and
dry. The following energy-efficiency measures helped researchers reach the 50%
energy-savings target: <o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-left:24.0pt;
text-indent:-.25in;line-height:15.6pt;mso-list:l3 level1 lfo4'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Symbol;color:#3C4349'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:9.5pt;font-family:"Arial","sans-serif";
color:#3C4349'>Lighting power density was reduced in office spaces and
occupancy sensors were used in infrequently occupied spaces. <o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-left:24.0pt;
text-indent:-.25in;line-height:15.6pt;mso-list:l3 level1 lfo4'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Symbol;color:#3C4349'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:9.5pt;font-family:"Arial","sans-serif";
color:#3C4349'>High-efficiency boilers, chillers, air distribution units, and
service water heating equipment were installed. <o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-left:24.0pt;
text-indent:-.25in;line-height:15.6pt;mso-list:l3 level1 lfo4'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Symbol;color:#3C4349'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:9.5pt;font-family:"Arial","sans-serif";
color:#3C4349'>Plug loads were reduced by purchasing high-efficiency electronic
equipment and using special controls that shut off equipment when not in use. <o:p></o:p></span></p>
<p><span style='font-size:9.5pt;font-family:"Arial","sans-serif";color:#3C4349'><a
href="http://www.nrel.gov/docs/fy10osti/47867.pdf">Large Hospital 50% Energy
Savings: Technical Support Document<span style='font-size:12.0pt;font-family:
"Times New Roman","serif";color:windowtext;text-decoration:none'><span
style='font-size:9.5pt;font-family:"Arial","sans-serif";color:#BA4F16'><img
border=0 width=13 height=14 id="Picture_x0020_3"
src="cid:image001.gif@01CB6A0A.088740D0" alt=PDF></span></span></a> details the
technical analysis performed and the resulting design guidance that will enable
large hospitals to achieve whole-building energy savings of at least 50% over
the above standard. The large hospitals report also documents the modeling
methods used to demonstrate how the design recommendations will help
institutions meet or exceed the 50% energy-savings goal. This report found 50%
energy savings can be achieved in large hospitals across all eight U.S. climate
zones. Energy savings range from 50.6% to 61.3%, with the smallest savings in
humid climates and extremely cold climates. The highest energy savings were
achieved in marine climates, with relatively high energy savings achieved in
dry climates. In general, for each climate type (humid, marine, and arid),
savings were seen to decrease as the climate became progressively colder. <o:p></o:p></span></p>
<p><span style='font-size:9.5pt;font-family:"Arial","sans-serif";color:#3C4349'>DOE
commissions these types of technical reports, called technical support
documents (TSDs), to describe the assumptions, methodologies, and analyses used
to achieve certain levels of energy performance. In many cases, technical
support documents are the basis for Advanced Energy Design Guides (AEDGs),
which are "how-to" guides that show architects, engineers, and
building designers how to achieve above-code exemplary energy performance for
buildings using existing technologies available today. The American Society of
Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) works in
collaboration with DOE, the American Institute of Architects, the Illuminating
Engineering Society of North America, and the U.S. Green Building Council to
develop and publish AEDGs. <o:p></o:p></span></p>
<p><span style='font-size:9.5pt;font-family:"Arial","sans-serif";color:#3C4349'>In
addition to the ASHRAE design guides, the results of these studies will be
shared with DOE's Commercial Building Energy Alliances. These alliances are
public-private collaborations aimed at developing energy-efficient technologies
and practices and sharing the information with commercial building owners and
operators around the United States.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Liu, Bing<br>
<b>Sent:</b> Monday, October 11, 2010 1:55 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] DOE, PNNL Release Report on Cutting Energy Use in
Half in Quick Service Restaurant<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:24.0pt'>DOE, PNNL Release Report on Cutting Energy Use in Half
in Commercial Buildings<o:p></o:p></span></b></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:13.5pt'>October 08, 2010<o:p></o:p></span></b></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i>Report
details strategies to save energy in quick-service restaurants</i><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The
U.S. Department of Energy and its Pacific Northwest National Laboratory (PNNL)
have released a technical report that provides recommendations on how to
achieve up to 50% energy savings in quick-service restaurants. PNNL, with help
from industry collaborators and under the direction of DOE's Building
Technologies Program, performed the research, analysis, and documentation that
support DOE's goal of significantly improving the energy efficiency of new and
existing commercial buildings across the United States. <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a
href="http://www.pnl.gov/main/publications/external/technical_reports/PNNL-19809.pdf">Technical
Support Document: 50% Energy Savings for Quick-Service Restaurants<span
style='text-decoration:none'><img border=0 width=13 height=14
id="Picture_x0020_1" src="cid:image001.gif@01CB6A0A.088740D0" alt=PDF></span></a>
details a package of energy-efficiency measures that cut energy use in
quick-service restaurants by up to 50% compared to a baseline standard in less
than five years. The 50% goal involves reducing site energy usage in all eight
U.S. climate zones, relative to buildings constructed to meet minimal
code-compliant requirements of ANSI/ASHRAE/IESNA Standard 90.1-2004. <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>For
the analysis, PNNL developed a 2,500-square-foot building model that was based
on actual floor plans in prototypical quick-service restaurant design. PNNL
used EnergyPlus, an energy simulation program, to determine the energy savings
provided by the energy-efficiency measures. The prototype building was analyzed
in the eight U.S. climate zones, which were further divided into 16
representative climate cities. The report establishes the baseline energy use
by end-use category in a typical quick-service restaurant and provides the site
energy and energy cost savings from implementation of the recommended measures.
The report also provides an estimate of the incremental first costs and simple
payback years for an energy-efficient quick-service restaurant in various
climate locations. <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The
following energy-efficiency measures helped researchers reach the
energy-savings target: <o:p></o:p></p>
<ul type=disc>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo3'>Ultra-efficient cooking appliances resulted in
reduced kitchen exhaust air flow<o:p></o:p></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo3'>An optimized HVAC system configuration was used
to better utilize a dedicated outdoor air system and runaround coil loop
heat recovery<o:p></o:p></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo3'>Efficient exterior and interior lighting were
used around the building and dimming controls were used in the dining room
<o:p></o:p></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo3'>Enhanced insulation, cool roofs, and
high-performance window glazing improved the building envelope. <o:p></o:p></li>
</ul>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The
50% savings report will provide the basis for the next series of Advanced
Energy Design Guides (AEDGs), which are "how-to" guides that show
architects, engineers, and building designers how to achieve above-code
exemplary energy performance for buildings using existing technologies
available today. The American Society of Heating, Refrigerating and
Air-Conditioning Engineers (ASHRAE) works in collaboration with DOE, the
American Institute of Architects, the Illuminating Engineering Society, and the
U.S. Green Building Council to develop and publish AEDGs. These are <a
href="http://www.ashrae.org/technology/page/938">available for free public
download</a>. <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>In
addition to the ASHRAE design guides, the results of these studies will be
shared with DOE's Commercial Building Energy Alliances and the Commercial
Building Partnerships. These groups are public-private collaborations aimed at
developing energy-efficient technologies and practices and sharing the
information with commercial building owners and operators around the United
States. <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>DOE,
with its national laboratories, commissions these technical support documents
(TSDs), to describe the assumptions, methodologies, and analyses used to
achieve certain levels of energy performance. DOE has published documents in
several categories for commercial buildings. To view previous TSDs, <a
href="http://nrelpubs.nrel.gov/Webtop/ws/nich/www/public/SearchForm">search the
publications database</a>. <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The
mission of the Building Technologies Program (BTP) is to develop technologies,
techniques, and tools for making buildings more energy efficient, productive,
and affordable. BTP focuses on improving commercial and residential building
components, energy modeling tools, building energy codes, and appliance
standards. For more information, visit the <a
href="http://www.eere.energy.gov/buildings/">Building Technologies Program Web
site</a>. <o:p></o:p></p>
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