energy analysis charrette drawings
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CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Building GreenBuilding GreenCommunity 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 AuthorityFocus 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 ChengAlbert Anthony Palacios
Richard William Crum, Jr.Jenna Elise KamholzLauren Almy Kohlhoff
Edna LedesmaAdam Baxter titrington
Cheng Cheng
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Materials ConservationMaterials Conservation
Reuse:Brick: East facadeGlass: South & West FaçadeConcrete: 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 wasteSurface 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
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Goal: Carbon NeutralGoal: 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:
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Skin Energy Ventilation StrategiesSkin Energy Ventilation Strategies
Venting MullionSystem:• By floor or groups of floors
Full Height ExtendingDouble Envelope
Wind & Solar:• Turbine / wind energy generation
• Photovoltaic wall panel & window system
Wind turbine
PhotovoltaicPanels
Cupola
Stack Effect
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Spring & Fall VentilationSpring & Fall Ventilation
Cross Ventilation West Wall Stack Exhaust Air
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Controlling Heat GainControlling 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
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
HVAC SystemHVAC System Displacement SystemDisplacement System
Hot Water Loop Double Duct Multi-Zone
Hotel Office
Outer Loop Displacement wheet under floor
larger volumehigh speed
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Mechanical Systems IntegrationMechanical Systems Integration
HVAC AbsorptionUnit
Solar collector
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Solar Collector &Hot Water SystemSolar Collector &
Hot Water SystemAtrium Radiant Floor HeatingAtrium Radiant Floor Heating
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Gray WaterReuseGray WaterReuse
Sprinkler System& Hose Bibs
Sprinkler System& Hose Bibs
• Toilets, fountains / atrium• Irrigation for landscaping
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Biophilia / Green SpaceBiophilia / Green SpaceGoal: Human contact with nature & daylight
1. Sunlight2. Courtyard3. Green Roof4. Green Niches / gardens5. Green Walls for
gray water filtration6. Atrium7. Office Plants8. Mechanical Park
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Traditional Cogeneration Cogeneration
TrigenerationTrigeneration
Distributed Power Systems OptionsDistributed Power Systems Options
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
CogenerationCogeneration
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Solar AssistedCogeneration System
Solar AssistedCogeneration 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 #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Single Stage Lo-Temp Exhaust Fired Cogeneration
Single Stage Lo-Temp Exhaust Fired Cogeneration
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Two Stage Hi-temp Exhaust Fired Absorption Cogeneration
Two Stage Hi-temp Exhaust Fired Absorption Cogeneration
Chilled waterCooling waterConcentrated solutionRefrigerant waterDiluted solution
1. High stage generator2. Low stage generator3. Condenser4. Evaporator5. Absorber6. High temp. heat exchanger7. Low temp. heat exchanger8. Water heater9. 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. Damper16. Damper17. Compressor 18. Combustor19. Turbine20. Generator
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Energy ConservationEnergy Conservation
15%10%
5%
40% 30%
By reducing lighting loads & other heat generatorsthe building energy loadcan be reduced by More than 60%
IES LightingAverage 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 wattsx 3.41 BTU/w2,046,000 BTU
÷ 12,000 BTU/tonLighting = 170.5 tons AC
Goal for lighting load:Reduce load to 1 watt / s.f. =170.5÷2= 85.25 tonsTarget Goal = .5 watts / s.f
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Lighting StrategiesLighting StrategiesA. 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 LightingDay LightingGoal : Daylight factor for Louisiana sky vault = (1000 FL )(2%) = 20 FCStrategies :
2% General Spaces / rooms5% Conference / Office8% Atrium / Lobby / Public Areas
Example: (85 tons)(≥ 20% goal for day lighting) = 17 tons85 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 #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Day Lighting / Lighting ImprovementsDay Lighting / Lighting Improvements(1 ton / 500 s.f. fans)(250,000 s.f.) = 500 tons x (60%) = 200 tons
Totals:170.5500127.86
52.5
805.86 tons
682005152.5
326.5 tons
59% load reduction
CRI Think Tank Charrette #2Designing the Center for Community Renewal Energy, Green Systems & Learning EnvironsOctober 17-18, 2008 10.29.08
Daylight Reduction = 20%Daylight Reduction = 20%
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