The goal of this discussion is to demystify building performance modeling. Computer-simulations give you a more complete picture of how various context and design factors can affect the performance of your space. Modeling information can help you analyze the impacts of your design decisions and determine how to most effectively meet project goals. Energy modeling is also valuable tool used for code compliance and LEED points. Not to mention the fancy graphics that models produce to show your clientele your commitment to performance-based design. This discussion will present various opportunities that can arise from building performance simulations with analysis at the early design, whole building, and building component levels. We will examine the following types of analysis: • Climate • Daylighting • Massing and orientation • Whole building energy usage forecast • Fenestration design • Façade development • Zone level energy performance • Baseline and design case models • System selection and optimization For more information on this training, contact Brittany Grech at bgrech@yrgsustainability.com or (347) 843-3085.

1. Building Performance Modeling

2. Learning Objectives Describe capabilities of building modeling Recognize model outputs Be familiar with when simulation can be used to assist design decisions Understand how modeling analysis can be implemented into your design process

3. Agenda Energy modeling Benchmarks and rating systems Performance modeling Design optimization Integrated design process Lessons learned

4. 3 D modeling

5. ≤55% ≤73% 7% Energy Modeling As We Know It

6. What’s good about this building?

7. What’s good about this building?

9. $$ EUI CO2 LEED 40% CODE

10. Energy Use Distribution

11. Window-to-Wall Ratio ≤16% ≤27% ≤38% Glazing Parametric Energy Analysis

12. Goal Setting

13. Building’s Performance – Simulation Opportunities

14. Light Shelves

15. Building’s Performance – Simulation Opportunities

16. Fenestration- Parametric Modeling

17. Solar Path on June 21st

18. East Solar Location- Low Best practice- Vertical fins West Solar Location- High Best practice- Horizontal Overhangs Sun Path- East and WestFaçades

19. North Solar Location- Low Best practice- None or Vertical fins South Solar Location- Above Best practice- Horizontal Overhangs Sun Path- North and South Façades

20. Glazing Performance- Sun Ray Vector

21. Comfort Optimization- Daylight Analysis

22. All Vertical Fins 20% All Horizontal Shades Combination 30% 40% Shading System Optimization- Solar Radiation Analysis

23. 30.1% SavingsOver Baseline 31.11% 32.4% 34.3% Shading System Optimization- Energy Use Analysis

24. 1:4 1:3 1:2 1:1 Further Shading System Optimization – Vertical Fin Performance Metric

25. Depth-to-Distance Ratios Horizontal Fins Fin Façade (~84°) Max Incline Condition 1 to 2.8 ratio Tower Interior Max Summer (75.9°) Max Winter (29.0°) Fin Façade (~90°) Typical Condition 1 to 3.6 ratio Tower Interior Max Summer (75.9°) Max Winter (29.0°) Shading Fins – Range of Performance

26. Annual Climate Analysis

27. New York Denver °F Phoenix Hong Kong 113+ 104 95 86 77 68 59 50 41 32 Annual Temperature Profile

28. 320 F Cooling Heating Insulation Insulation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Energy Demand

29. Annual Climate Analysis

30. Building’s Performance – Simulation Opportunities

31. Energy Use Distribution

32. ≤36% Active System Optimization

33. ft/s Site Wind 32.0+ Strong breeze Fresh breeze 29.5 26.2 22.9 Moderate breeze 19.7 16.4 Gentle breeze 13.1 Light breeze 9.8 6.6 Calm 3.3 Ventilation Analysis

34. Reduced Electric Lighting Reduced Cooling Loads Landscape Irrigation HVAC Cooling Tower H2O Daylighting Rainwater Collection Passive Winter Heating Reduced HVAC Size Stormwater Management Non-potable H2O Source Interactive Approach

35. Comparative Analysis- Early Design

36. What is a Building? Shelter for occupant comfort What is Performance? “The manner in which or the efficiency with which something reacts or fulfills its intended purpose” What is Simulation? Computer program for representation of the behavior or characteristics What is Building Performance Modeling?

37. Curtainwall Punched Window Designer’s Dilemma

38. Glazing- Energy Reduction and Daylight Increase

39. 100% Glazed 50% Daylight Annual Temperature Cooling load 0% Glazed 0% Daylight Glazing- Range of Performance

40. Optimum daylight Fenestration- Optimized System

41. Integrative Team: The Composite Master Builder

43. Lighting

45. Roofs

46. Windows

47. Shading SystemINFLUENCE Passive and Active Systems

48. Optimization Pathway HVAC AND CONTROLS RENEWABLE ENERGY SYSTEM SELECTION ENERGY COST BUDGET DEMAND REDUCTION PARAMETRIC ENERGY USAGE ENVELOPE AND DAYLIGHT RADIATION AND DAYLIGHT ORIENTATION AND PLACEMENT CLIMATE AND CONTEXT 1 2 3 4 5 Model Outputs Modeling Analyses for Integrated Design

51. Low infiltrationSite Analysis

52. Building Climate Interaction

54. Cooling- continuously on- electricity

55. Dual duct variable air volume

56. Water cooled chillers

57. Heat recovery or economizers

58. Fan and pump inputs

60. SizeSpecialty equipment Whole Building Energy Model Inputs

61. Whole Building Energy Modeling Results

62. Benchmarking Tools and Rating Systems

63. Design Models SD phase analysis DD/CD phase analysis IES VE SketchUp eQuest Rhino 3D Ecotect Revit Daysim/Radiance AutoCAD Tool workflow

64. Design Integrated Analysis

65. YRG sustainabilityconsulting – education – analysis www.yrgsustainability.com ArpanBakshi, Sustainability Manager abakshi@yrgsustainability.com Shillpa Singh, Senior Sustainability Manager ssingh@yrgsustainability.com