![Page 1: Thesis Final Presentation - Pennsylvania State University...Mechanical Redesign Results – First Costs Enthalpy Wheel 41,887 51,879 93,765 40,219 DOAS_Radiant 33,109 43,141 150,047](https://reader034.vdocuments.site/reader034/viewer/2022050408/5f853d749a5440580548ce8a/html5/thumbnails/1.jpg)
Thesis Final Presentation
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Presentation Outline
• Project Team• Project Background• Redesign Goals• Mechanical Redesign• Conclusions• Questions
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Project Team• General Contractor and CM – Whiting Turner• Architect – Hugh Newell Jacobsen• Landscape Architect – P.E.L.A. Design• Mechanical, Electrical, Plumbing, and Fire Protection
Engineers – EBL Engineers• Civil Engineer – A. Morton Thomas & Associates• Structural Engineer – McMullan & Associates• Owner – The University of Maryland• User – The University of Maryland Alumni
Association
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Project Background
• Admin Building• Alumni Hall
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Project Background
• Admin Building• Alumni Hall
![Page 6: Thesis Final Presentation - Pennsylvania State University...Mechanical Redesign Results – First Costs Enthalpy Wheel 41,887 51,879 93,765 40,219 DOAS_Radiant 33,109 43,141 150,047](https://reader034.vdocuments.site/reader034/viewer/2022050408/5f853d749a5440580548ce8a/html5/thumbnails/6.jpg)
Project Background
Admin Building• AHU-1 Zones• AHU-2 Zones• AHU-3 Zones• AHU-4 Zones
![Page 7: Thesis Final Presentation - Pennsylvania State University...Mechanical Redesign Results – First Costs Enthalpy Wheel 41,887 51,879 93,765 40,219 DOAS_Radiant 33,109 43,141 150,047](https://reader034.vdocuments.site/reader034/viewer/2022050408/5f853d749a5440580548ce8a/html5/thumbnails/7.jpg)
Project Background
Admin Building• AHU-1 Zones• AHU-2 Zones• AHU-3 Zones• AHU-4 Zones
![Page 8: Thesis Final Presentation - Pennsylvania State University...Mechanical Redesign Results – First Costs Enthalpy Wheel 41,887 51,879 93,765 40,219 DOAS_Radiant 33,109 43,141 150,047](https://reader034.vdocuments.site/reader034/viewer/2022050408/5f853d749a5440580548ce8a/html5/thumbnails/8.jpg)
Project Background
Admin Building• AHU-1 Zones• AHU-2 Zones• AHU-3 Zones• AHU-4 Zones
![Page 9: Thesis Final Presentation - Pennsylvania State University...Mechanical Redesign Results – First Costs Enthalpy Wheel 41,887 51,879 93,765 40,219 DOAS_Radiant 33,109 43,141 150,047](https://reader034.vdocuments.site/reader034/viewer/2022050408/5f853d749a5440580548ce8a/html5/thumbnails/9.jpg)
Project Background
Admin Building• AHU-1 Zones• AHU-2 Zones• AHU-3 Zones• AHU-4 Zones
![Page 10: Thesis Final Presentation - Pennsylvania State University...Mechanical Redesign Results – First Costs Enthalpy Wheel 41,887 51,879 93,765 40,219 DOAS_Radiant 33,109 43,141 150,047](https://reader034.vdocuments.site/reader034/viewer/2022050408/5f853d749a5440580548ce8a/html5/thumbnails/10.jpg)
Project Background
• Admin Building• Alumni Hall
![Page 11: Thesis Final Presentation - Pennsylvania State University...Mechanical Redesign Results – First Costs Enthalpy Wheel 41,887 51,879 93,765 40,219 DOAS_Radiant 33,109 43,141 150,047](https://reader034.vdocuments.site/reader034/viewer/2022050408/5f853d749a5440580548ce8a/html5/thumbnails/11.jpg)
Project Background
Alumni Hall• Alumni Hall• Hall of Fame• MD Room• Reception Area
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Project Background
Alumni Hall• Alumni Hall• Hall of Fame• MD Room• Reception Area
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Project Background
Alumni Hall• Alumni Hall• Hall of Fame• MD Room• Reception Area
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Project Background
Alumni Hall• Alumni Hall• Hall of Fame• MD Room• Reception Area
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Project Background
• Self-Contained Utility Building (SCUB)• Under-floor Air Distribution• Enthalpy Wheel System
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Redesign Goals
• Mechanical– Dedicated Outdoor Air System– Low Temperature Chilled Water– Low Temperature Supply Air
• Electrical– Resize for New Mechanical Equipment
• Structural– Resize for New Mechanical Equipment
• Overall– Lower First Cost– Reduce Energy Consumption– Improve Thermal Comfort
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Mechanical Redesign
Dedicated Outdoor Air System (DOAS)• FanCoil Units• Radiant Panels• Free Cooling, Cooling Tower• Enthalpy Wheel w/ Variable Air Volume System
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Mechanical RedesignResults – Annual Costs
16,724162,74610,66320,3651,7335,926113,71710,342Enthalpy Wheel
3,528175,94210,34219,7541,8066,553133,6323,855DOAS_Radiant
(12,435)191,90510,28519,6441,8015,929145,1088,838DOAS-FanCoil
0179,47010,50820,0691,7126,748132,9727,461Original
$/yr$/yr$/yr$/yr$/yr$/yr$/yr$/yr
Total SavingsTotalElectrical EquipmentLightsPumpsHeatingCooling Air System Fans
-
50,000
100,000
150,000
200,000
250,000
Original DOAS-FanCoil DOAS-Radiant EnthalpyWheel
$/yr
Electric Equipment Lights Pumps Heating Air System Fans Cooling
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Mechanical RedesignResults – First Costs
40,21993,76551,87941,887Enthalpy Wheel
174,723288,2691971150,04743,14133,109DOAS_Radiant
105,387158,93383,62946,81628,488DOAS-FanCoil
53,54653,564Original
$$$$$$$
AdditionalTotalCooling TowerPanelsFanCoil UnitsEnthalpy WheelsAir Handling Units
-
50,000
100,000
150,000
200,000
250,000
Original DOAS-FanCoil DOAS-Radiant EnthalpyWheel
$
AHU's EW's FCU's Panels CT
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Mechanical RedesignResults – First Costs
40,219112,08318,31851,87941,887Enthalpy Wheel
249,105320,9691971150,04732,70043,14133,109DOAS_Radiant
87,069158,93383,62946,81628,488DOAS-FanCoil
71,86418,31853,564Original
$$$$$$$
AdditionalTotalCooling TowerPanelsFanCoil UnitsEnthalpy WheelsAir Handling Units
0
50000
100000
150000
200000
250000
300000
350000
$
Original DOAS-FanCoil
DOAS-Radiant
EnthalpyWheel
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Mechanical Redesign
Results – Payback Comparison
240,21916,724Enthalpy Wheel
50174,7233,529DOAS_Radiant
Loss105,387(12,435)DOAS-FanCoil
N/A00Original
yr$$/yr
PaybackAdditional First CostAnnual Savings
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Mechanical Redesign
Low Temperature Chilled Water• Utilize SCUB• Low Temperature Supply Air• Results
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Mechanical RedesignResults – Annual Costs
(59,591)239,06110,39319,8511,61214,774184,4877,944Low Temperature Supply Air
3,660175,81010,50820,0691,7126,748129,3123,801Low Temperature Chilled Water
0179,47010,50820,0691,7126,748132,9727,461Original
$/yr$/yr$/yr$/yr$/yr$/yr$/yr$/yr
Total SavingsTotalElectrical EquipmentLightsPumpsHeatingCooling Air System Fans
-
50,000
100,000
150,000
200,000
250,000
300,000
Original LowTempCW LowTempSA
$/yr
Electric Equipment Lights Pumps Heating Air System Fans Cooling
![Page 24: Thesis Final Presentation - Pennsylvania State University...Mechanical Redesign Results – First Costs Enthalpy Wheel 41,887 51,879 93,765 40,219 DOAS_Radiant 33,109 43,141 150,047](https://reader034.vdocuments.site/reader034/viewer/2022050408/5f853d749a5440580548ce8a/html5/thumbnails/24.jpg)
Mechanical Redesign
Results – Payback Comparison
Loss1,559(59,591)Low Temperature Supply Air
003,660Low Temperature Chilled Water
N/A00Original
yr$$/yr
PaybackAdditional First CostAnnual Savings
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Mechanical RedesignOptimal System
Results – Annual Costs
19,758159,71210,66420,3661,7335,926114,4416,582Optimal
16,724162,74610,66320,3651,7335,926113,71710,342Enthalpy Wheel
3,660175,81010,50820,0691,7126,748132,9723,801Low Temperature Chilled Water
0179,47010,50820,0691,7126,748132,9727,461Original
$/yr$/yr$/yr$/yr$/yr$/yr$/yr$/yr
Total SavingsTotalElectrical EquipmentLightsPumpsHeatingCooling Air System Fans
-20,00040,00060,00080,000
100,000120,000140,000160,000180,000200,000
Original LowTempCW EnthalpyWheel Best
$/yr
Electric Equipment Lights Pumps Heating Air System Fans Cooling
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Mechanical RedesignOptimal System
Results – Payback Comparison
2.140,44019,758Optimal
2.440,21916,724Enthalpy Wheel
003,660Low Temperature Chilled Water
N/A00Original
yr$$/yr
PaybackAdditional First CostAnnual Savings
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Conclusions
• Enthalpy Wheels with VAV System and Low Temperature Chilled Water
• Additional First Cost $40,440• Annual Savings $19,758• Payback = 2.1 years
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Questions?
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Bonus RoundsElectrical Redesign – Sizing Circuit Breakers
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Bonus RoundsElectrical Redesign – Sizing Panelboard
PP5B and Transformer TR-5
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Bonus RoundsElectrical Redesign – Resized Panelboards and
Transformers for the Optimal System
(112.5)(73)(45)TR-7
(45)(36)(15)TR-5
400353200PP7B
225222225PP7A
1007650PP5B
150125250PP5A
A (kVA)A (kVA)A (kVA)
New SizeLoadOriginal Size
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Bonus RoundsStructural Redesign