Bowie State University Fine and Performing Arts Center Zachary Lippert Faculty 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 Lippert Faculty 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 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

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 UFAD1, Difference450 MBh13 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 ExistingProposed Total Watts EFLH2522 Total kWh kWh with Sensors-6940 Total Savings42,022 kWh ExistingProposed Total Watts EFLH2870 Total kWh kWh with Sensors-6813 Total Savings14,896 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:$1,938,000 Total Utility Savings: -$ Existing SystemGSHP Electric Consumption (kWh) Electric Cost $57,428.48$58, Gas Consumption (therms) Gas Cost $732.00$0.00 Total 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 Fixtures Price/FixtureTotal Cost Old Luminaires 317$212.00$67, New Luminaires 159$352.00$55, Savings $11, ClassroomsOffices kWh Saved per Year Cost/kWh $ Money Saved/Year $ $ Total Savings/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 ClassroomsOffices Cost Without Sensors $1,531.81$1, Cost With Sensor $643.36$ Utility Savings $888.45$ Total Savings per Year $1, Occupancy Sensor Costs 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

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?