University of Texas Graduate Architecture Students work form the second CRI think tank charrette

1. 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
CRI Think Tank Charrette #2
Designing the Center for Community Renewal Energy, Green Systems & Learning Environs
10.29.08
October 17-18, 2008

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

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

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

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

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

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

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

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

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

11. 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
CRI Think Tank Charrette #2
Designing the Center for Community Renewal Energy, Green Systems & Learning Environs
10.29.08
October 17-18, 2008

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

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

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

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

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

17. By reducing lighting loads &
Energy Conservation 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. 10%
5%
15%
Lighting load example:
Existing = 150,000 s.f.
New = 150,000 s.f.
300,000 s.f. 30% 40%
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
CRI Think Tank Charrette #2
Designing the Center for Community Renewal Energy, Green Systems & Learning Environs
10.29.08
October 17-18, 2008

18. 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 :
General Spaces / rooms
2%
Conference / Office
5%
Atrium / Lobby / Public Areas
8%
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.)
CRI Think Tank Charrette #2
Designing the Center for Community Renewal Energy, Green Systems & Learning Environs
10.29.08
October 17-18, 2008

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

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