Program Name or Ancillary Texteere.energy.gov BUILDING TECHNOLOGIES PROGRAM Benchmark Buildings &...
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Transcript of Program Name or Ancillary Texteere.energy.gov BUILDING TECHNOLOGIES PROGRAM Benchmark Buildings &...
Program Name or Ancillary Text eere.energy.gov
BUILDING TECHNOLOGIES PROGRAM
Benchmark Buildings & Models: Concept & Structure
Dru Crawley, Ph.D.U.S. Department of Energy Energy Efficiency and Renewable Energy
January 24, 2010
Commercial Buildings’ Energy Share
• Commercial buildings account for: – 18% of U.S. energy– 18% of greenhouse gas
emissions (~1,000 MMT of CO2e)
– slightly less than India’s entire energy consumption and GHG emissions
Commercial Square Footage Projections
Source: EIA’s Annual Energy Outlook 2009, Table 5.
72
82
20102003
66
2030
Minus ~16B ft.2
demolitions
104Plus ~38B ft.2 new
additions
Simulation in Low-Energy Building Research
• In DOE’s low-energy building research, simulation has been critical for designing and operating buildings to support decision-making
• But we need ‘benchmark’ models to represent new and existing buildings for research and technology evaluation.
Solution: Benchmark Building Models
• Well documented—all inputs necessary to determine building operating energy performance are shown in Scorecard (spreadsheet which lists the individual inputs along with the source for the information).
• Currently available… 90.1-2004 models representing 80% of commercial building floor area…
• Soon … recent and older existing buildings, 90.1-2007, 90.1-2010 versions
• Continuous improvement:– Updates to current simulation versions– New information, detailed end-uses from monitoring research
Benchmark Buildings
• NREL, PNNL, and LBNL developed benchmark buildings– Set of standardized buildings that can be used as a
code-compliant starting point– Can be used for sector analysis (building stock weights)– Can be used to set performance targets by specific climate or
other parameters (covers all climate zones)– Can be used to show progress toward goals
Simulation Models
• Benchmark models available in EnergyPlus input format along with summary results
• EnergyPlus: fully integrated building, envelope, HVAC, water, and renewables simulation program, available free at www.energyplus.gov
Thanks!
Questions?
Drury Crawley
U.S. Department of Energy
Commercial Building Initiative
commercialbuildings.energy.gov
EnergyPlus
energyplus.gov