These drawings are University of Texas graduate student work in the second CRI Think Tank charrette and set for ideas and challenges for green system integration for CCR, ideas on the learning environments in the CCR and the impacts of a "net zero" LEED platinum building on downtown Shreveport, Louisiana

1. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Building Green
Community Renewal International (CRI)
Think tank Charrette #2 –
Designing the “Center for Community Renewal” (CCR)
10.17-18.08
Focus Area One:
“Building green – impacts & systems integration”
Discussion Panel:
• Michael Garrison, Professor, University of Texas Architecture
• Don Shea, Director, Shreveport Downtown Development Authority
Focus Area Two:
“Shaping the Learning Environments of the CCR”
Discussion Panel:
• Harold Ledford, PhD. curriculum development & learning specialist for CRI
• Barbara Colvin, ASID, learning environments design specialist for MHSM
University of Texas Architecture Graduate Student Charrette Teams:
John Christopher Buono
Tracie Ann Cheng
Albert Anthony Palacios
Richard William Crum, Jr.
Jenna Elise Kamholz
Lauren Almy Kohlhoff
Edna Ledesma
Adam Baxter titrington
Cheng Cheng

2. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
CCR Green Systems Integration

3. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Materials Conservation
Reuse:
Brick: East facade
Glass: South & West Façade
Concrete: Frame & (Garage)
From the neighboring
community:
• Large steel working
industry
• Brick is a dominant
regional building
material
Existing Structure:
Less modification = more reuse
Reduce:
Modular: Less waste
Surface Area Configuration:
• Sphere is ideal; cube is
most simple geometric form
• Complex configurations use
more material per unit of
volume.
• Finish materials = exposed
structure
Recycled /
Recyclable:
Steel 60% recycled content:
• Scrap material based concept.
Example of melted guns or
recycled car materials.
Housing scrap:
• Recycled furniture, wood
flooring from row houses…
Polyethylene, polymers & all
plastics:
• (HPDE) made from recycled
materials but not recyclable
• PTE: recycled nylon carpet
• Styrene from recycled plastic
Organic Fabrics:
• Rubber Tires
Glass & Paper:
• Energy to reuse is high
Aluminum & Stainless Steel
Reduce  Reuse  Recycle

4. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Goal: Carbon Neutral
Underutilized
& Local:
Pecan, Mesquite, Long Leaf
Pine, Clay Brick
Certified:
R.O. Martin:
Only certified within 500 miles
Engineered:
Parallam, LVL, MDF:
• Not Necessarily structural
but utilized for trim & finish
materials.
Underutilized, local materials, certified, engineered, smart low embodied energy
Smart:
ETFB, Glass Technologies
• Electro chromic,
electro thermal,
glass reinforced polymers…
Low Embodied
Energy:
Local, Wood not Bamboo:
Carbon Balanced:
Wood CO2 Producers =
CO2 Sequesters
• Planting trees contributes if
CO2 is unbalanced through
design.
10% of the CO2
emissions
produced in the
U.S. comes from
the concrete
hydration process:

5. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Skin Energy Ventilation Strategies
Venting Mullion
System:
• By floor or
groups of floors
Full Height
Extending
Double Envelope
Wind & Solar:
• Turbine / wind
energy generation
• Photovoltaic
wall panel & window
system
Wind turbine
Photovoltaic
Panels
Cupola
Stack Effect

6. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Spring & Fall Ventilation
Cross Ventilation West Wall Stack Exhaust Air

7. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Controlling Heat Gain
Shading Devices:
• Louvers, fins, screens, etc.
Ventilation:
• Summer – draws heat
away from building
• Winter – traps & stores
heat as a thermal blanket
Vegetation:
• Cools air before
reaching building
• O2 production & shading

8. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
HVAC System Displacement System
Hot Water Loop Double Duct Multi-Zone
Hotel Office
Outer Loop Displacement wheet under floor
larger volume
high speed

9. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Mechanical Systems Integration
HVAC Absorption
Unit
Solar collector

10. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Solar Collector &
Hot Water System
Atrium Radiant
Floor Heating

11. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Gray Water
Reuse
Sprinkler System
& Hose Bibs
• Toilets, fountains / atrium
• Irrigation for landscaping

12. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Biophilia / Green Space
Goal: Human contact with nature & daylight
1. Sunlight
2. Courtyard
3. Green Roof
4. Green Niches / gardens
5. Green Walls for
gray water filtration
6. Atrium
7. Office Plants
8. Mechanical Park

13. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Traditional Cogeneration
Trigeneration
Distributed Power Systems Options

14. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Cogeneration

15. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Solar Assisted
Cogeneration System
Gas turbine 1.
Solar collector 2.
Solid oxygen Fuel 3.
Internal combustion engine 4.
Two stage hi-temp. absorption unit 5.
Single stage low-temp. absorption unit 6.
Fuel cell 7.
Domestic hot water 8.
Thermal “ice storage” 9.
Pumps 10.
Electric transformers 11.

16. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Single Stage Lo-Temp
Exhaust Fired Cogeneration

17. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Two Stage Hi-temp Exhaust Fired
Absorption Cogeneration
Chilled water
Cooling water
Concentrated solution
Refrigerant water
Diluted solution
1. High stage generator
2. Low stage generator
3. Condenser
4. Evaporator
5. Absorber
6. High temp. heat exchanger
7. Low temp. heat exchanger
8. Water heater
9. Solution pump
10. Refrigerant pump
11. Chilled water valve (open)
12. Heating water valve (closed)
13. Cooling water valve (open)
14. Cooling / heating switch (open)
15. Damper
16. Damper
17. Compressor
18. Combustor
19. Turbine
20. Generator

18. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Energy Conservation
15%
10%
5%
40%
30%
By reducing lighting loads &
other heat generators
the building energy load
can be reduced by
More than 60%
IES Lighting
 Average wattage / s.f. = 2 watts / s.f.
 Goal energy wattage ≤ 1.3 watts / s.f.
Lighting load example:
Existing = 150,000 s.f.
New = 150,000 s.f.
300,000 s.f.
x 2 watts
600,000 watts
x 3.41 BTU/w
2,046,000 BTU
÷ 12,000 BTU/ton
Lighting = 170.5 tons AC
Goal for lighting load:
Reduce load to 1 watt / s.f. =
170.5÷2= 85.25 tons
Target Goal = .5 watts / s.f

19. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Lighting Strategies
A. Better Lights : CFL, LED, Fiber Optic
B. Glare free Lighting : Task, Ambient lighting
C. Brightness Ratios : 70% walls, 80% ceilings, 50% work surface, 20% floors
D. Lighting Controls : Education, timers, sensors, photocell
E. Day lighting : Goal = .5 watts per square foot
Day Lighting
Goal : Daylight factor for Louisiana sky vault = (1000 FL )(2%) = 20 FC
Strategies :
2%  General Spaces / rooms
5%  Conference / Office
8%  Atrium / Lobby / Public Areas
Example: (85 tons)(≥ 20% goal for day lighting) = 17 tons
85 tons – 17 tons reduced from daylight = 68 tons for lighting
(60% improvement from 170.5 tons per IES 2 watts / s.f.)

20. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Day Lighting / Lighting Improvements
(1 ton / 500 s.f. fans)(250,000 s.f.) = 500 tons x (60%) = 200 tons
Totals:
170.5
500
127.86
5
2.5
805.86 tons
68
200
51
5
2.5
326.5 tons
59% load reduction


21. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Daylight Reduction = 20%

22. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
CCR Learning Environments

23. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Atrium Lobby Level
as an inviting “town square”

24. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
CCR Auditorium as a “flexible theatre”

25. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Outdoor / Indoor Transition
Axial Circulation
through building
Central point of arrival (node)
Main circulation core
Green connection into atrium.
Green wall could be a
physical &
visual connection to
the “Roof Park”
Space for café is transformable.
Creates connection from
inside to outside.
Café begins to spill out
on to sidewalk to
increase pedestrian activity
Retail / café improve
Downtown pedestrian
Experience.
Water element
connects
through wall
Sensor operated
education displays

26. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
CCR Impacts on Downtown

27. CRI Think Tank Charrette #2
Designing the Center for Community Renewal  Energy, Green Systems & Learning Environs
October 17-18, 2008 10.29.08
Green Roofs and Urban Agriculture