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Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance
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Building Performance Modeling: How to Use Modeling Analysis to Optimize Design Performance

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Presented at Herman Miller in New York City on December 2, 2010.

Presented at Herman Miller in New York City on December 2, 2010.

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  • To be completed
  • To be Completed
  • Modeling can serve all sizes of purpose and goals. DIFFERENT tools at different times.
  • ASHRAE is planning to reduce it’s baseline energy use to 0 in next 20 years, that includes some power generation. It is very possible to reduce passive+active energy use by 60-70% with efficient design. Current standard 189 provides guidance to reduces energy use by 30%, so another 30 is easy with some more integrated design
  • TALKING POINTS:Envelope to Floor / Volume Area RatioRoof to Wall RatioForm impactsConductionHVAC distributionDaylighting / Natural VentilationForm is impacted byContext and microclimate FormBuilding Surface AreaEnvelope Area/ Space VolumeConduction (heat loss in winter)DaylightingNat VentilationHVAC DistributionRoof/WallContext/Micro-climate
  • TALKING POINTS:Solar heat gainWindRadiation
  • Not sure if this is a good slide to show, yet
  • Doesn’t account for lighting controls, yetCentral chillers
  • YRG developed a baseline case energy model compliant with ASHRAE 90.1 YRG developed a Proposed Design case energy model representing the actual project design with all Energy Efficiency MeasuresThe model was able to estimate energy savings of the project relative to the ASHRAE baselineUtilizing energy costs of the project for the site, these energy savings translate to operational cost savings
  • Modeling allows u to predict operating energy use, and possibly borrow from there into capital cost expenditures, with a promise to pay back.
  • Energy is neither created or destroyedAll energy gains have to balance each other out. If there is too much conduction, then ventilation or evaporative gains have to be –ve or provided by mechanical system
  • Tools used- Evalglare/Radiance
  • For vapor diffusion and liquid transferWUFI-ORNL/IBP can be used for assessing the drying time of masonry with trapped construction moisturethe danger of interstitial condensationthe influence of driving rain on exterior building componentsthe effect of repair and retrofit measuresthe hygrothermal performance of roof and wall assemblies under unanticipated use or in different climate zones.
  • Trends section of PA part 2Current trends in building performance modeling- 45minuteso Energy modeling usage statisticso BIM integrationo Metered data/ calibration- M&V, and also going back and calibrating EB modelo BIM integration- talk about Port Authority’s BIM usage. Integration into operationso After occupancy modeling (talk about BIM and its capabilities from design through ops)o Online dashboards – slide from Trendso After occupancy modeling (talk about BIM and its capabilities from design through ops)
  • Trends intro
  • Rapid energy modeling an emerging trend, we are validating its accuracy
  • Trends intro
  • Existing building energy usage model – Harvard Gund Hall Example
  • Web based monitoring
  • Web based monitoring
  • BIM and GIS integration, potential for collection of energy data for entire portfolio of existing buildings. (Onuma)
  • Transcript

    1. 1- introduction- what is modeling<br />BPM slides<br />2. There are muultiple reasons to model- bechmark, code compliance<br />3. Show integrated design, times to model<br />4. Early design<br />5. Middle design- parmetric study<br />6. Whole building design model- appendix G<br />TOOLS<br />7. Trends <br />
    2. Modeling Analysis to Optimize Design Performance<br />Shillpa Singh, Senior Sustainability Manager<br />ArpanBakshi, Sustainability Manager<br />YRG sustainability – www.yrgsustainability.com<br />
    3. YRG sustainability<br />consulting - education - analysis<br />Design & Construction<br />Business & Operations<br />Communities<br />Education & Training<br />Marketing & Media<br />
    4. Learning Objectives<br />Describe capabilities of building modeling<br />Recognize model outputs<br />Be familiar with when simulation can be used to assist design decisions<br />Understand how modeling analysis can be implemented into your projects<br />
    5. Agenda<br />Building Performance Modeling<br />Design Assistance<br />Compliance – Benchmarks<br />Simulation tools<br />Integrated Design Process<br />
    6. Building 3-d Modeling<br />
    7. Building Performance Modeling<br />What is a Building?<br />Shelter for occupant comfort<br />What is Performance? <br />“The manner in which or the efficiency with which something reacts or fulfills its intended purpose”<br />What is Simulation?<br />Computer program for representation of the behavior or characteristics<br />What is Building Performance Modeling?<br />
    8. Building Dynamics<br />
    9. Modeling Reality<br />
    10. Compliance<br />and Rating Systems<br />
    11. Path to Net Zero<br />Net-Zero Goals<br />
    12. Which is the right one for you?<br />EUI kBTU/sf<br />CO2<br />40% energy savings<br />Code Compliant<br />$$<br />LEED Gold<br />
    13. Market Average<br />Code<br />Step 1<br />Step 2<br />Step 3<br />EUI Target<br />Step 4<br />Benchmark<br />
    14. Defining Net-Zero<br />Source: Oregon Sustainability Center<br />
    15. Goal Setting<br />9%<br />≤32%<br />≤48%<br />
    16. HVAC<br />AND<br />CONTROLS<br />RENEWABLE<br />ENERGY<br />WHOLE BUILDING ENERG MODEL<br />ENERGY COST BUDGET<br />DEMAND<br /> REDUCTION<br />PARAMETRIC ENERGY USAGE<br />ENVELOPE<br /> AND<br />DAYLIGHT<br />RADIATION AND DAYLIGHT<br />ORIENTATION<br />AND<br />PLACEMENT<br />CLIMATE AND CONTEXT<br />When Is The Right Time For You?<br />1<br />2<br />3<br />4<br />5<br />Model Outputs<br />
    17. Climate Analysis<br />Summer Winds–<br />Permeable Envelope<br /><ul><li>Operable panes
    18. Intake, Exhaust vents</li></ul>Winter Winds– <br />Thermal Envelope<br /><ul><li>Low U-value
    19. Low infiltration
    20. Temperature
    21. Precipitation
    22. Wind
    23. Shading Study</li></ul> Site Analysis <br />
    24. 09/21 09:00<br />09/21 15:00<br />Site Solar Position<br />
    25. New York<br />Denver<br />°F<br />Phoenix<br />Hong Kong<br />113+<br />104<br />95<br />86<br />77<br />68<br />59<br />50<br />41<br />32<br />Annual Temperature Profile<br />
    26. Cold Stress<br />7000+ hours<br />Comfortable<br />900+ hours<br />Heat Stress<br />200+ hours<br />Source:: Denver, CO TMY3 Weather Data<br />Thermal Stress<br />
    27. Observation<br />Constant annual rainfall<br />Combination of high humidity and constant rainfall makes it a wet climate<br />Recommendation<br />Design for water proofing and moisture penetration<br />Annual rainfall 683.0 mm (26 inches)<br />Driest month Oct with 40.0 mm rainfall<br />Wettest month Jun with 90.0 mm rainfall <br />Monthly Rainfall<br />
    28. New York Wind Speed and Direction<br />Actual Weather and Desired Comfort<br />Annual Wind, Temperature and Humidity Analysis <br />
    29. Floor Area= 9,600 SF<br />Building Volume = 96,0000 cu.ft.<br />Massing<br />15,200 SF<br />6,014 SF<br />23,200 SF<br />SURFACE AREA : SPACE VOLUME<br />0.15<br />0.063<br />0.24<br />Envelope Area : Volume Ratio<br />
    30. June 21st @ 9:00 am<br />United Nations Building – New York, NY<br />Building Orientation – Solar Access<br />N<br />Actual<br />Rotated 90 degrees<br />
    31. Energy Efficiency Measure: Building Shape<br />Annual energy savings = 1.6% or 120,000 rupees<br />Square<br />53.8 kBtu/SF/yr<br />‘H Baseline’<br />54.7 kBtu/SF/yr<br />
    32. Energy Efficiency Measure: Roof Insulation<br />Annual energy savings = 0.4% or 28,000 rupees<br />R-40<br />54.5 kBtu/SF/yr<br />R-15<br />54.7 kBtu/SF/yr<br />
    33. Parametric Studies<br />Comparative Analysis- Early Design<br />
    34. Brainstorming<br />
    35. Summer Condition<br />Solar Exposure<br />
    36. East<br />Solar Location- Low <br />Best practice- Vertical fins<br />West<br />Solar Location- High<br />Best practice- Horizontal Overhangs<br />Sun Path- East and West Façades<br />
    37. All Vertical Fins<br />All Horizontal Shades<br />20%<br />Combination<br />30%<br />40%<br />Shading System Optimization- Solar Radiation Analysis<br />
    38. 1:4<br />1:3<br />1:2<br />1:1<br />Further Shading System Optimization –<br />Vertical Fin Performance Metric<br />
    39. Depth-to-Distance Ratios<br />Horizontal Fins<br />Fin<br />Façade (~84°)<br />Max Incline Condition<br />1 to 2.8 ratio<br />Tower Interior<br />Max Summer (75.9°)<br />Max Winter (29.0°)<br />Fin<br />Façade (~90°)<br />Typical Condition<br />1 to 3.6 ratio<br />Tower Interior<br />Max Summer (75.9°)<br />Max Winter (29.0°)<br /> Shading Fins – Range of Performance<br />
    40. Recommendations<br /> Cumulative Solar Exposure, Summer Season<br />2010.09.04<br /> Shading Devices – Summer Heat Gain Comparison<br />
    41. Whole Building Energy Model<br />
    42. 3D Models<br />Beyond Design DWGs<br />Mech. Zoning<br />Occupancy<br />Equipment<br />Lighting Use<br />Set points<br />Efficiencies<br />Schedules<br />Information…. Information<br />Source: Moma<br />
    43. PROPOSED…<br />& BASELINE<br />
    44. Performance Rating Method<br />Rotation<br />
    45. GSHP reduces heating energy by 20%<br /><ul><li>Electrical Carbon Footprint: 61 kBTU/sf
    46. Heating Carbon Footrprint: 23 kBTU/sf
    47. Emphasize on reduction of electrical energy consumption through lighting, cooling, fans, and pump efficiencies</li></ul>Ground Source Heat Pump-<br /> Saving 2% of total building energy<br />
    48. Energy Use Comparison<br />0.23%<br />10.9%<br />11%<br />13.2%<br />
    49. Interpreting results<br />
    50. Performance Rating Method<br />Energy Cost vs Energy Use<br />
    51. Energy Use vs. Energy Cost<br />Baseline<br />Proposed<br />Baseline<br />Proposed<br /> Background – Building Energy Picture<br />2010.08.30<br />
    52. 10 LEED Points!!! <br />* The energy model predicted return on investment of the project within 4 years of the project operations<br />
    53. Costs and Benefits<br />
    54. ROI Payback<br />
    55. Capital Cost vs Operating Cost<br />Operating Budget<br />Construction Budget<br />
    56. Building’s Performance – Simulation Opportunities<br />
    57. Performance<br />(Dis)Comfort<br />
    58. Climate Classification<br />The blue line is the temperature and humidity profile through the year. The site is in a cold climate majority of the time, and warm and dry for a short time of the year. Use the “moderate” period for passive cooling and heating, free cooling and economizer cycle.<br />
    59. Qc + Qv + Qr + Qi + Qe = 0<br />Qc = Conductive Gains<br />Qv = Ventilation Gains<br />Qr = Radiant Gains<br />Qi = Internal Gains<br />Qe = Evaporative Gains<br />Mechanical Systems to provide thermal comfort. <br />
    60. Comfort Optimization- Qualitative Analysis<br />
    61. Key Results 21 AUG 4PM<br />West Wall Clear Glass<br />Intolerable Glare<br />
    62. Scale 0-500fc<br />Scale 0-25fc. <br />The colored area is below 25 FC<br />12% LEED Compliant FTE Spaces (9am)<br />9% LEED Compliant FTE Spaces (3 pm)<br />Daylight- Quantitative Analysis<br />
    63. Jersey City Municipal Services Complex<br />Design Optimization<br />no shelf<br />exterior shelf only<br />exterior/interior <br />shelf<br />Solar Shades<br />Light Shelves<br />Reduced summer heat gain<br />Even distribution of illumination<br />Office Building Light Shelf Study<br />
    64. 1 ft. Shelf Depth<br />2 ft. Shelf Depth<br />Shelf covers a <br />glare source<br />Finding: Uniform Daylight distribution with increase in shelf depth<br />Office Building Light Shelf Study<br />
    65. BEFORE<br />53% area above 25 Foot-candles<br />Daylight Analysis<br />
    66. AFTER<br />74% area above 25 Foot-candles<br />Daylight Analysis<br />
    67. Passive Systems: Wall<br />Wall Assembly- Therm<br />
    68. Moisture and Thermal properties of a wall assemblyTool: WUFI – ORNL / IBP<br />
    69. Ventilation Analysis<br />ft/s<br />Site Wind<br />32.0+<br />Strong breeze<br />Fresh breeze<br />29.5<br />26.2<br />22.9<br />Moderate breeze<br />19.7<br />16.4<br />Gentle breeze<br />13.1<br />Light breeze<br />9.8<br />6.6<br />External Wind Movement Analysis- Computational Fluid Dynamics<br />Calm<br />3.3<br />
    70. Internal Air Movement- Computational Fluid Dynamics<br />
    71. SD phase analysis<br /> Are you Using?<br />DD/CD phase analysis<br />IES VE<br />SketchUp<br />eQuest<br />Rhino 3D<br />Ecotect<br />Revit<br />Daysim/Radiance<br />AutoCAD<br />Tool workflow<br />
    72. Trends<br />Building Integrated Modeling<br />
    73. Measure vs Manage<br />
    74. Rapid Energy Modeling (REM)<br />
    75. Inter-Disciplinary Modeling<br />
    76. Simulated vs Measured<br />
    77. Operations BIM- Web Based<br />
    78. Let’s Compete<br />
    79. Future…<br />
    80. Exploring Ideas<br />
    81. Modeling Analysis to Optimize Design Performance<br />Shillpa Singh, Sustainability Manager<br />ssingh@yrgsustainability.com<br />ArpanBakshi, Sustainability Manager<br />abakshi@yrgsustainability.com<br />www.yrgsustainability.com<br />Twitter: @YRGreen<br />Facebook: YRG sustainability<br />

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