bowie state university fine and performing arts center
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Bowie State University Fine and Performing Arts Center. Zachary Lippert Faculty Advisor: Dr. Stephen Treado. Bowie State University Fine and Performing Arts Center. Project Team Owner: University of Maryland CM: Holder Construction Company - PowerPoint PPT PresentationTRANSCRIPT
Bowie State University Fine and Performing Arts Center
Zachary LippertFaculty Advisor: Dr. Stephen Treado
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Project Team
Owner: University of Maryland
CM: Holder Construction Company
Architect: EYP Architecture and Engineering
Mechanical Contractor: W.E. Bowers
Electrical Contractor: Mona Electric
Controls Contractor: Seimens
Commissioning Authority: EMC/Eaton
MEP Engineer: EYP Architecture and Engineering
Bowie State University Fine and Performing Arts Center
Zachary LippertFaculty Advisor: Dr. Stephen Treado
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Project Overview• Site
• Bowie, Maryland• Southeast corner of campus
• Project Information• 123,000 square feet• $79 million• Design-Bid-Build delivery method
• Architecture• Large expanse of glass• Mixed use building• Multiple large performance spaces• Art gallery Courtesy of Google Maps
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Existing Mechanical System
• 3 Mixed Air Units with enthalpy wheels• 16 Air Handling Units• 64 VAV boxes (40 to 1,200 CFM)
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Existing Mechanical System
• Two 1712 MBH gas fired boilers• Four heating water pumps• 305 ton air cooled chiller• Four chilled water pumps
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
500,964.00
472,963.00
183,266.00
1,038,262.00
284,900.00
Energy Consumption by System
Heating
Cooling
Auxiliary
Lighting
Receptacle
Existing Mechanical System
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Proposed Redesign
• Goals for the redesign• Improve the mechanical efficiency• Reduce utility bills
• Redesign Components• Ground source heat pump• Underfloor air distribution• Energy efficient lighting system
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Ground Source Heat Pump
• Soil type• Cretaceous• Diffusivity = .9 ft2 /day• Conductivity = 1.1 Btu/h*ft*°F
• Calculations
No. of Bores Depth (ft)450 616.1480 577.6510 543.6540 513.4570 486.4
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Ground Source Heat Pump
• Equipment• 510 bores at 544 ft• 2 gpm/ton• System flow rate: 410 gpm• 5” headers and 1” U-tube piping• Total head loss: 54 ft of water• Two 10 HP 1750 RPM pumps
• Energy Model• Heating: Saved 411,164 kBtu/year• Cooling: Saved 153,327 kBtu/year• Auxiliary: Used additional 237,532 kBtu/year• Net Savings: 326,959 kBtu/year
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Underfloor Air Distribution
• Location of the systems• Large volume spaces• Encourage stratification
• Duct layout• Less ductwork• Lower pressure drop• Less fan power
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Underfloor Air Distribution
• Energy Usage• Minor reduction in cooling load• Significant increase in heating load
Heating (MBh)
Cooling (tons)
Existing 587 212
UFAD 1,037 199
Difference 450 MBh 13 tons• System Sizing
• Increased duct length ~20%• Increased fan power and size
• System Drawbacks• Raised floor system• Larger fan• More materials• Longer construction time• Uses more energy
• This system was not further investigated
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Energy Efficient Lighting
• Redesign Goal• Reduce the yearly kWh in the offices and
classrooms• Provide adequate light for required tasks
• Methods• Energy efficient luminaires• T5HO lamps• Occupancy sensors
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Energy Efficient Lighting
• Existing Lighting Design
• Offices• Recessed direct luminaires• Two foot luminaires with two 40 Watt TT5 lamps• 1.55 Watts/sq. ft.
• Classrooms• Recessed direct luminaires• Four foot luminaires with two 32 Watt T8 lamps• 1.47 Watts/sq. ft.
• Proposed Lighting Design
• Offices and classrooms• Suspended direct/indirect luminaires• Four foot luminaires with one 54 Watt T5HO
lamps
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Energy Efficient Lighting
• Illuminance Values• Office: 30 foot-candles• Music Classrooms: 15 foot-candles
• AGI Model• Less watts per luminaire• Half as many luminaires• Excellent energy savings
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Energy Efficient Lighting
• Occupancy Sensors• Offices: Passive infrared• Classrooms: Ultrasonic
• Equivalent Full Load Hours• Offices: 2870• Classrooms: 2522
• Hours Saved• Offices: 1091• Classrooms: 1463
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Office Energy Savings Classroom Energy Savings
Existing ProposedTotal Watts 19414 6552
EFLH 2522 2522Total kWh 48962 16524
kWh with Sensors - 6940
Total Savings 42,022 kWh
Existing ProposedTotal Watts 7564 3829
EFLH 2870 2870Total kWh 21709 10989
kWh with Sensors - 6813
Total Savings 14,896 kWh
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Ground Source Heat Pump Cost and Savings
• Total System Cost: $2,938,000• BG&E Incentive: $1,000,000• Net Cost: $1,938,000
• Total Utility Savings: -$665.27
Existing System
GSHP
Electric Consumption (kWh)
619509 634582
Electric Cost $57,428.48 $58,825.75Gas Consumption (therms)
3660 0
Gas Cost $732.00 $0.00Total Utility Cost $58,160.48 $58,825.75
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Lighting Redesign Cost and Savings
No. of Fixture
s
Price/Fixture
Total Cost
Old Luminaires
317 $212.00$67,204.0
0New Luminaires
159 $352.00$55,968.0
0
Savings$11,236.0
0
Classrooms
Offices
kWh Saved per Year
32437 10718
Cost/kWh $0.0927 $0.0927Money Saved/Year
$3006.88 $993.57
Total Savings/Year
$4000.45
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Occupancy Sensor Cost and Savings
• Initial cost of sensors: $4,480• BG&E 75% Incentive: $1,120• Cost of Installation: $10,080• Net Total Cost: $11,200
• Simple Payback
Classrooms Offices
Cost Without Sensors
$1,531.81 $1,018.73
Cost With Sensor $643.36 $631.61
Utility Savings $888.45 $387.12
Total Savings per Year
$1,275.56
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Recommendations
• Ground Source Heat Pump• Reduced energy consumption• Expensive to install• Increased utility costs• Explore other options
• Underfloor Air Distribution• Expensive to install• Increased energy consumption• Increased construction time• Explore other options
• Lighting Redesign• Less expensive to install• Reduced energy consumption and costs• Implement this design
• Occupancy Sensors• Reduced energy consumption and costs• More expensive to install• 8.8 year payback• Implement this design
Presentation Outline
• Project Overview
• Existing Mechanical System
• Proposed Redesign
• Ground Source Heat Pump
• Underfloor Air Distribution System
• Lighting Breadth
• Cost and Savings
• Recommendations
• Conclusion
Acknowledgements
Architectural Engineering Faculty and Staff
Dr. Stephen Treado
Adam Seigrist and Mike Luffred of EMC/Eaton
Hayes Todd of Holder Construction
My Friends and Family
Questions?
