University of Maryland’s Gossett Field House College Park, MD Jason Borowski Architectural Engineering Mechanical Option Pennsylvania State University

University of Maryland’sUniversity of Maryland’sGossett Field House Gossett Field House College Park, MDCollege Park, MD

Jason BorowskiJason BorowskiArchitectural EngineeringArchitectural EngineeringMechanical OptionMechanical OptionPennsylvania State UniversityPennsylvania State University


Presentation OutlinePresentation Outline• Project BackgroundProject Background• Existing Mechanical SystemExisting Mechanical System• Mechanical RedesignMechanical Redesign• Structural RedesignStructural Redesign• Electrical RedesignElectrical Redesign• Conclusions & Conclusions &

RecommendationsRecommendations• Acknowledgements Acknowledgements • QuestionsQuestions



Project TeamProject Team

• Owner:Owner: University of MarylandUniversity of Maryland• Architect:Architect: Bignell, Watkins, & HasserBignell, Watkins, & Hasser• MEP:MEP: Schlenger/Pitz & AssociatesSchlenger/Pitz & Associates• Structural:Structural: The Watkins PartnershipThe Watkins Partnership



Project InformationProject Information

• Square Footage: 65,000 SFSquare Footage: 65,000 SF• Number of Floors: 2Number of Floors: 2• Existing 1Existing 1stst Floor: 25,000 SF Floor: 25,000 SF• Existing 2Existing 2ndnd Floor: 15,000 SF Floor: 15,000 SF• Total Renovated Area: 40,000 Total Renovated Area: 40,000

SFSF• 22ndnd Floor Addition: 25,000 SF Floor Addition: 25,000 SF



Existing 1Existing 1stst Floor Spaces Floor Spaces• Weight RoomWeight Room• Home/Visitor Locker roomsHome/Visitor Locker rooms• Coaches OfficesCoaches Offices• Trainers RoomTrainers Room

Existing 2Existing 2ndnd Floor Spaces Floor Spaces• Additional Support OfficesAdditional Support Offices



22ndnd Floor Addition Floor Addition• Full Service KitchenFull Service Kitchen• Dining Area with Terrace over Dining Area with Terrace over

looking Byrd Stadiumlooking Byrd Stadium• 250 seat Auditorium250 seat Auditorium• Hall of Fame CorridorHall of Fame Corridor• Classroom/Tutor RoomsClassroom/Tutor Rooms• Computer LabComputer Lab



Existing Air Side SystemExisting Air Side System

Renovation Section:Renovation Section:• AHU - 1AHU - 1 – Serves 2 – Serves 2ndnd floor floor

office space office space • AHU – 2AHU – 2 – Serves 1 – Serves 1stst floor floor

- 100% OA unit with no - 100% OA unit with no energy recoveryenergy recovery

• Duct mounted hot water Duct mounted hot water booster coilsbooster coils



Existing Air Side SystemExisting Air Side System

22ndnd Floor Addition Section: Floor Addition Section:• Six Packaged Rooftop UnitsSix Packaged Rooftop Units

- 3 CAV Units- 3 CAV Units

- 3 VAV Units- 3 VAV Units• VAV boxes with hot water VAV boxes with hot water

reheat coils used as terminal reheat coils used as terminal devicesdevices

• Air flows from 1400 – 10000 Air flows from 1400 – 10000 cfmcfm



Existing Water Side SystemExisting Water Side System

• Air Cooled Liquid Chiller – 270 tonsAir Cooled Liquid Chiller – 270 tons• Steam to HW Heat Exchanger – 110 gpmSteam to HW Heat Exchanger – 110 gpm• Two Chilled water pumps – 650 gpm, 15 hpTwo Chilled water pumps – 650 gpm, 15 hp• Four hot water pumpsFour hot water pumps

- 80 gpm, 1 ½ hp- 80 gpm, 1 ½ hp

- 25 gpm, ¾ hp- 25 gpm, ¾ hp



Mechanical RedesignMechanical Redesign Convert to Central Plant Convert to Central Plant

OperationOperation

- Steam/HW Heat- Steam/HW Heat

- Chilled Water- Chilled Water• Use Sensible/Latent Energy Use Sensible/Latent Energy

Recovery Ventilators to Reduce Recovery Ventilators to Reduce Load on Central PlantLoad on Central Plant

• Use VAV boxes with reheat for all Use VAV boxes with reheat for all terminal devicesterminal devices



Objectives of RedesignObjectives of Redesign

• Minimize First Cost Minimize First Cost DifferenceDifference

• Reduce Annual Operating Reduce Annual Operating CostsCosts

• Create a more Create a more Homogeneous System Homogeneous System


• Eliminate Gas Fired Eliminate Gas Fired HeatHeat

• Make use of Make use of Resources AvailableResources Available

• Minimize impact on Minimize impact on other Building other Building SystemsSystems

• Minimize impact on Minimize impact on Steam PlantSteam Plant


Design Load ComparisonDesign Load Comparison

Existing Existing SystemSystem

Proposed Proposed SystemSystem

Total Cooling Total Cooling MBH:MBH: 43984398 32153215

Total Heating Total Heating MBH:MBH: 44314431 31973197

Total Reheat Total Reheat MBH:MBH: 13971397 14141414

Total Reheat Total Reheat GPM:GPM: 106106 142142

Total CFM:Total CFM: 8662586625 7748077480



First Cost ComparisonFirst Cost Comparison



Proposed Proposed SystemSystem

Air Side Cost:Air Side Cost: $157,275$157,275 $205,175$205,175

Water Side Cost:Water Side Cost: $185,325$185,325 $341,825$341,825

Ductwork Cost:Ductwork Cost: -- - $128,900- $128,900

Total First Cost:Total First Cost: $342,600$342,600 $418,100$418,100


Utility Rates Provided by Utility Rates Provided by UMD Facility ManagerUMD Facility Manager

Annual Cost Data Annual Cost Data generated through HAP generated through HAP AnalysisAnalysis

Washington, DC used as Washington, DC used as Simulation CitySimulation City



ProposeProposed d SystemSystem

Annual Annual CostCost

$51,751$51,751 $40,782$40,782

Electric Rate:Electric Rate: $0.65/Kwh$0.65/Kwh

Gas Rate:Gas Rate: $0.80/therm$0.80/therm

Steam Rate:Steam Rate: $18.00/1000#$18.00/1000#


Total Cost ComparisonTotal Cost Comparison

Life Cycle Cost Calculated over 15 years, using a 5% Interest RateLife Cycle Cost Calculated over 15 years, using a 5% Interest Rate

Proposed System Saves $38,355Proposed System Saves $38,355


Existing SystemExisting System Proposed Proposed SystemSystem

First CostFirst Cost $342,600$342,600 $418,100$418,100

Life Cycle CostLife Cycle Cost $537,160$537,160 $423,305$423,305

Total CostTotal Cost $879,760$879,760 $841,405$841,405


Structural Redesign - AHUsStructural Redesign - AHUs

No Significant Structural Impact from AHUsNo Significant Structural Impact from AHUs


Existing SystemExisting System Proposed SystemProposed System

AHU-1AHU-1 18,50018,500 18,15018,150

AHU-2AHU-2 11,75011,750 11,00011,000

RAC-1RAC-1 5,2005,200 4,8504,850

RAC-2RAC-2 600600 525525

RAC-3RAC-3 5,2005,200 4,8504,850

RAC-4RAC-4 3,0003,000 2,7502,750

RAC-5RAC-5 5,2005,200 4,8504,850

RAC-6RAC-6 1,3001,300 1,1501,150


Structural Redesign – Cooling TowersStructural Redesign – Cooling Towers

At a cost of $595 per ton, steel for cooling towers would cost approx $500.At a cost of $595 per ton, steel for cooling towers would cost approx $500.


Ultimate Load (kip/ft):Ultimate Load (kip/ft): 1.561.56

Mmax (kip-ft):Mmax (kip-ft): 28.128.1

Vmax (kip):Vmax (kip): 9.369.36

Selection:Selection: 16x3116x31

Beam Pass Beam Pass Shear/Moment?Shear/Moment? YesYes

Beam Pass Deflection:Beam Pass Deflection: YesYes


Electrical RedesignElectrical RedesignOriginal Equipment RemovedOriginal Equipment Removed• AHUs AHUs

- 480/277 V- 480/277 V

- 2 – 400 A Panel Boards- 2 – 400 A Panel Boards• Water Side EquipmentWater Side Equipment

- 480/277 V- 480/277 V

- 1 – 600 A Panel Board- 1 – 600 A Panel Board• Total Load Removed:Total Load Removed:

- 670 KVA- 670 KVA


Proposed Equipment AddedProposed Equipment Added• AHUs AHUs

- 480/277 V- 480/277 V- 1 – 600 A Panel Board- 1 – 600 A Panel Board

• Water Side EquipmentWater Side Equipment- 480/277 V- 480/277 V- 1 – 400 A Panel Board- 1 – 400 A Panel Board

• VAV BoxesVAV Boxes- 480/277 V- 480/277 V- 4 – 150 A Panel Boards- 4 – 150 A Panel Boards

• Total Load Added:Total Load Added:- 645 KVA- 645 KVA


AcknowledgementsAcknowledgementsRichard Naldrett – Schlenger/Pitz & AssociatesRichard Naldrett – Schlenger/Pitz & Associates

Frank Watkins – Bignell, Watkins & HasserFrank Watkins – Bignell, Watkins & Hasser

John Vucci – UMD Facilities ManagerJohn Vucci – UMD Facilities Manager

AE Faculty and StaffAE Faculty and Staff

Fellow AE StudentsFellow AE Students

Family, Siblings & GirlfriendFamily, Siblings & Girlfriend


Questions?Questions?

Documents

University of Maryland’s Gossett Field House College Park, MD Jason Borowski Architectural Engineering Mechanical Option Pennsylvania State University