Discussion on use of the Integrative Design Process (a new credit in LEED v4) to get to high levels of sustainable performance using a LEED Platinum project as an example

1. Design Group
April 30, 2014
Moving to High Performance Design

2. Carey Nagle
BNIM Architects
Scott Bowman
KJWW Engineering
Many slides are courtesy of BNIM Architects – Not all are referenced

4. Sustainability

5. Efficiency

6. High Performance

7. REGULATORY PRESSURES
Codes and Standards

8. Measure Performance?
• ASHRAE Standards (90.1)
• Energy Star
• Code (IECC)
• LEED
• IgCC
• Green Globes
• BREEAM

9. DOE 30%
Reduction
Target
Courtesy PNNL
ASHRAE 90.1-2013?
ASHRAE 90-1975 ASHRAE 90A-1980
ASHRAE 90.1-1999
ASHRAE 90.1-2001
ASHRAE 90.1-2007
ASHRAE 90.1-2004
ASHRAE 90.1-1989
ASHRAE 90.1-2010
ASHRAE Standard 90.1EnergyUseIndex(1975Use=100)
Year
1970 1975 1980 1985 1990
50
1995 20152000 20102005
110
100
90
80
70
60
14%
4.5%
.5%
12.3%
4.5%
18.5%

10. Courtesy USGBCLEED v4?
LEED

11. MOVING TO HIGH PERFORMANCE
Integrative Design

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Owner
Architects
Consultants
Utility Companies
INTEGRATE
=
UNITE
COLLABORATION + INTEGRATED DESIGN PROCESS

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Use Less
• Reduce Loads
• Passive
• Envelope
Use
Efficiently
• System
Selection
• High
Efficiency
Make On
Site
• Renewable
Energy
• Portal to
Future

15. Energy Modeling
• Key to High Performance
• Important to understand interaction
• Many approximations – manage expectations
• Know limits of software
• Understand gross assumptions!
• Move from isolated evaluations to bundling
• Set early goals – Measure against them often!

16. 23%
44%

17. 42%
15%
21%

18. Why kBtu/sf
• ASHRAE currently uses energy cost
• Dollars reflect some local energy utilization
and market conditions
• Suppressed sources can obscure signals
– Natural Gas
– Renewable Energy (Wind or Solar)
• Need to measure true performance
• Location, Location, Location
– 28 kBtu/sf means something in Iowa
– What about Portland?

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Integration Leads to High Performance
Iowa Utilities Board / Office of Consumer Advocate
State of Iowa

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Total EUI :
28.0
kBtu/sf/yr
% Reduction from
code base EUI
60%
Model for other
government & private
sector entities
LEED
Platinum
VISIONARY GOALS

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Building Area
44,640
GSF
Cost
$204
Per GSF
MODEST BUDGET

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REPLICATION + INNOVATION
REPLICATION INNOVATION
• Passive Strategies First
• Orientation + Planning
• Shallow N-S Footprint depths
• Daylighting
• Natural Ventilation
FLOOR
PLAN

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REPLICATION + INNOVATION
REPLICATION INNOVATION
• Passive Strategies First
• Orientation + Planning
• Shallow N-S Footprint depths
• Daylighting
• Natural Ventilation
FLOOR
PLAN

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35. Replication + Innovation
REPLICATION INNOVATION
• Orientation
• Shared Parking
• Independent of Power Plant

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38. REPLICATION INNOVATION
• Solid West & East Envelope
• Mitigate Heat Gain
• Mitigate Glare

39. REPLICATION INNOVATION
• Daylight / Windows
• North Diffuse Daylight
• Views
• Light Tubes
• Daylight Responsive Dimming
• Daylight Harvesting Sunscreen
• 98% Daylighting
DAYLIGHTING STRATEGIES

40. REPLICATION INNOVATION
• Light Shelf
• Screen Shade
• Daylight Harvesting Sunscreen
• Parabolic Louver Blades

41. REPLICATION INNOVATION
• High Angle Summer Daylight
• Low Angle Winter Daylight

42. REPLICATION INNOVATION
• Shorter Furniture Panel System
Provides Full Daylighting 70% More
of the Time as Compared to Existing

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REPLICATION INNOVATION
• Cost Effective Precast Envelope
• Horizontal Windows
• Daylight Harvesting System
Becomes the Architecture

44. REPLICATION INNOVATION
• Operable Windows • Weather Station
• Building Automation System Alert
• Systems Tie-In
• Cost Effective
NATURAL VENTILATION

45. REPLICATION INNOVATION
• Good Thermal Envelope
• Cost Effective Precast
• Thermal Bridging Mitigation
• Non-Conductive Precast System
• Material Duality
ENVELOPE

46. REPLICATION INNOVATION
• Passive Strategies
• Geothermal
• Energy Recovery
• Occupancy Sensors Per Workstation
• Demand Controlled Ventilation
• Building Automation System
• Photovoltaic Panels
ENERGY STRATEGIES

47. 19.1%
of Building Energy Use
RENEWABLE ENERGY
REPLICATION INNOVATION
• Passive First • Employ Loads Efficiently
• Employ as Funding Becomes
Available

48. Energy Monitoring
LEED Measurement &
Verification
Electrical Circuits Monitored
• Lighting
• Plug Loads
• Mechanical Equipment
• General Building Loads
• IT Equipment
Geothermal Loop
Data Collected by Capitol
Complex Energy Management
System
REPLICATION INNOVATION
• Ensures Intended Operation
• Identifies Additional Savings
• Provides Research and
Demonstration Data

49. RESULTS
$54,000 Annual Savings

50. 16.7 – 77% saved
26%
18%
24%20%
11%

51. Includes PV
75%
98%

52. Includes PV
75%
98%

53. MEASUREMENT AND VERIFICATION
Second Year M&V Results:
• Design Estimated Model EUI – with PV 28.1
• Monitored EUI – with PV 16.7
• Monitored EUI – without PV 21.2
Conclusions:
• Model over predicted pumping energy – software limited
• Model slightly over predicted lighting savings
• Plug loads are significantly lower than design expectations
• Corrected energy model tracks actual use well
• Tools supported good decision making!
Energy Star = 100

54. Awards and Recognitions
• AIA Committee On The Environment
– Top 10 Green Building Award 2012
– Top 10 Plus in 2014
• ASHRAE Technology Award
– Second Place in 2014
• AIA Central States Region Merit Award
• AIA Iowa Merit Award
• Des Moines’ Environmental Impact Awards
– Built Environment Award

55. http://bt.e-ditionsbyfry.com/publication/?i=200800&p=38

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Moving to High Performance Design
Questions?

58. SELF REPORTING GBCI CREDIT

59. SELF REPORTING GBCI CREDIT

60. SELF REPORTING GBCI CREDIT

61. SELF REPORTING GBCI CREDIT

62. SELF REPORTING GBCI CREDIT

63. SELF REPORTING GBCI CREDIT
See document
provided that can
be used to cut
and past the
suggested
information to
get CE credit.