NRUCFC Headquarters Building Sterling VA Architectural Engineering Senior
NRUCFC Headquarters Building Sterling, VA Architectural Engineering Senior Thesis Margaret Mc. Namara | Mechanical Option Advisor | Dr. Stephen Treado
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Introduction Project Overview Systems Overview Existing Mechanical System Depth 1 | DOAS w. Chilled Beams Depth 2 | Hybrid PVT Solar System Breadth 1 | Electrical Breadth 2 | Architectural Conclusion Acknowledgements Questions NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Project Overview Building Type | Office Building Depth 1 Depth 2 Breadth 1 Conclusion Acknowledgements Questions Project Team Project Overview Architect | Kishimoto. Gordon. Dalaya PC Size | 120, 000 GSF Interior Architect | Fox Architects Number of Stories | 3 above grade Landscape Architect | EDAW Construction Dates | Nov. 2009 -Sept. 2011 Site/Civil Engineers | Dewberry Project Cost | $45 million Structural Engineers | SK&A Project Delivery Method | Design-Bid-Build MEP Engineers | WSP Flack + Kurtz LEED Consultants | Sustainable Design Cunsulting N Location | Sterling, VA NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado General Contractor | Whiting-Turner
Project Overview Systems Overview Existing Mech. System Electrical/Lighting System Depth 1 Depth 2 Breadth 1 Architecture Conclusion Acknowledgements Questions Structural System Foundation| Combination of isolated columns and Generators | Two pad-mounted 600 k. W generators serve strip wall footings with a 5” slab-on grade emergency power and required standby service Frame | Steel Frame that utilizes composite beams Microturbines | Two 65 k. W microturbines serve data and slabs center Atrium | Arched trusses made of HSS members Lighting | Daylight sensors and occupancy sensors form atrium dome with an oculus control the lighting NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Air Side Summary Conclusion Acknowledgements Questions Water Side Summary Four Rooftop AHUs | 18, 000 -24, 000 CFM Cooling | Two 210 ton electric centrifugal chillers Fan Powered Boxes | Perimeter Heating and Cooling located in first floor central plant VAV Boxes | Interior Heating and Cooling Heating | Two high efficiency natural gas boilers located in the penthouse Atrium Heating and Cooling Ground Source Heat Pumps Radiant Flooring NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Depth 1 | DOAS with Chilled Beams Conclusion Acknowledgements Questions Active Chilled Beams Advantages Uses less air and allows for smaller duct work and AHUs Redesign Proposal Lower floor to floor height Replace four existing AHUs with DOAS unit Requires minimum maintenance Replace VAVs and FPBs with Chilled Beams Reduces energy consumption Active Chilled Beam Disadvantages Redesign Goal Reduce energy consumption Higher initial cost Reduce airflow Larger than tradition diffuser Active Chilled Beams (ACBs) NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Sensitive to humidity
Project Overview Systems Overview Existing Mech. System Depth 1 | DOAS with Chilled Beams Depth 1 Depth 2 Breadth 1 Conclusion Acknowledgements Questions Chilled Beam Sizing and Selection Latent and Sensible Load from Trane. TRACE ASHRAE Standard 62. 1 | Ventilation Requirements DOAS w. ACBs Design Conditions Chilled Beam Summary Model Quantity Length Total Cost IQIC-4 85 4’ $ 72, 250. 00 IQIC-6 98 6’ $ 93, 100. 00 8’ $ 71, 400. 00 Supply Air Outdoor Air Space Design TDB (F˚) 64 93. 2 75. 2 Humidity (Grains) 44 154 65. 7 IQIC-8 68 Dew Point (F˚) 45 - - Total 251 Ventilation Requirements to meet Latent Load Ex. Sel Air Chilled Beam Calculator CHW Supply | 57 ˚F | 1 gpm SEMCO IQID Series NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado $ 236, 750. 00
Project Overview Systems Overview Existing Mech. System Depth 1 | DOAS with Chilled Beams Depth 1 Depth 2 Breadth 1 SEMCO Pinnacle System (PVS) Conclusion Acknowledgements Questions PVS Advantages Total Energy Wheel & Passive Dehumidification Wheel DOAS Unit Selection 40, 000 CFM Delivers low dew points Provides high levels of OA and controls humidity Large latent load capacity NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Conclusion Acknowledgements Depth 1 | DOAS with Chilled Beams PVS Cooling Mode PVS Unoccupied Mode NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado PVS Heating Mode Questions
Project Overview Systems Overview Existing Mech. System Depth 1 | DOAS with Chilled Beams Depth 1 Depth 2 Breadth 1 251 1 Item VAV/FPB Boxes AHUs Acknowledgements Energy Consumption Comparison Cost Savings First Comparison Quantity 132 4 Conclusion Existing System Equipment $ 56, 628. 00 $ 700, 000. 00 First Cost Savings $ 181, 495. 00 Installation $ 24, 507. 00 $ 48, 000. 00 Total $ 81, 135. 00 $ 748, 000. 00 Utility Cost Savings $ 24, 727. 03 Total $ 748, 000. 00 Total $ 206, 222. 03 Redesigned System Chilled Beams $ 236, 750. 00 $ 32, 881. 00 Pinnacle DOAS Unit $ 278, 874. 00 $ 18, 000. 00 Total $ 269, 631. 00 $ 296, 874. 00 $ 566, 505. 00 NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Questions
Project Overview Systems Overview Existing Mech. System Depth 2 | Hybrid Photovoltaic/Thermal (PVT) Solar System Depth 1 Depth 2 Breadth 1 PVTWINS Schematic Liquid Collector Conclusion Acknowledgements Questions Advantages More efficient than traditional PV modules One unit instead of two | Installation, Materials, Energy Redesign Proposal and Goals Add hybrid PVT Collectors to the roof Disadvantages Produce heat and electricity from solar radiation Not used frequently Costly and little to no incentives NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado
Project Overview Systems Overview Existing Mech. System Depth 2 | Hybrid Photovoltaic/Thermal (PVT) Solar System Depth 1 Depth 2 Breadth 1 Conclusion Acknowledgements Questions Solar Thermal Energy Output PVTWIN Series 1025 | PVT Liquid Collector Design Information # of Collectors | 10 Collectors Area | 6. 4 m 2 each collector Tilt | 40˚ Solar Radiation Energy Output (k. Wh/m 2/day) (k. Wh) January 3. 59 4825. 0 February 4. 28 5752. 3 March 4. 80 6451. 2 April 5. 34 7177. 0 Total Solar Thermal Savings May 5. 32 7150. 1 June 5. 66 7607. 0 July 5. 46 7338. 2 August 4. 38 5886. 7 September 5. 07 6814. 1 October 4. 72 6343. 7 November 3. 56 4784. 6 December 3. 03 4072. 3 Month | Therms Cost 164. 6 $ 196. 3 $ 220. 1 $ 244. 9 $ $2, 911. 66 244. 0 $ 259. 6 $ 250. 4 $ 200. 9 $ 232. 5 $ 216. 5 $ 163. 3 $ 139. 0 $ 189. 33 225. 72 253. 14 281. 62 280. 57 298. 50 287. 95 230. 99 267. 38 248. 92 187. 75 159. 80 Total Savings $ 2, 911. 66 NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado
Project Overview Systems Overview Existing Mech. System Depth 2 | Hybrid Photovoltaic/Thermal (PVT) Solar System Depth 1 Depth 2 Breadth 1 Conclusion Acknowledgements Questions Solar Thermal Energy Output PVTWIN Series 1025 | PVT Liquid Collector Cost Summary Total Collector Cost | $98, 350 Total PVT Savings | $7, 544 Simple Payback | 13 Years Solar Radiation Energy Output (k. Wh/m 2/day) (k. Wh) January 3. 59 4825. 0 February 4. 28 5752. 3 March 4. 80 6451. 2 April 5. 34 7177. 0 Total Solar Thermal Savings May 5. 32 7150. 1 June 5. 66 7607. 0 July 5. 46 7338. 2 August 4. 38 5886. 7 September 5. 07 6814. 1 October 4. 72 6343. 7 November 3. 56 4784. 6 December 3. 03 4072. 3 Month | Therms Cost 164. 6 $ 196. 3 $ 220. 1 $ 244. 9 $ $2, 911. 66 244. 0 $ 259. 6 $ 250. 4 $ 200. 9 $ 232. 5 $ 216. 5 $ 163. 3 $ 139. 0 $ 189. 33 225. 72 253. 14 281. 62 280. 57 298. 50 287. 95 230. 99 267. 38 248. 92 187. 75 159. 80 Total Savings $ 2, 911. 66 NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado
Project Overview Systems Overview Breadth 1 | Electrical Existing Mech. System Depth 1 Depth 2 Breadth 1 Condense Panel Boards Conclusion Acknowledgements Questions New Feeder Size (4) #4 + (1) #8 G. in 1 -1/4” C. [Type THHN/THWN] Redesign Goals Condense Panel Boards | Remove FPBs Electrical Production of PVT Collectors NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado
Project Overview Systems Overview Breadth 1 | Electrical Existing Mech. System Depth 1 Condense Panel Boards | Remove FPBs Electrical Production of PVT Collectors Breadth 1 Conclusion PVT Collector Electric Energy Output Month Redesign Goals Depth 2 January February March April May June July August September October November December Solar Radiation (k. Wh/m 2/day) 3. 59 4. 28 4. 80 5. 34 5. 32 5. 66 5. 46 4. 38 5. 07 4. 72 3. 56 3. 03 Total AC Energy (k. Wh) 4, 164 4, 370 5, 278 5, 457 5, 328 5, 495 5, 354 5, 369 5, 004 4, 967 3, 767 3, 354 57, 907 Energy Value ($) $ 333. 12 $ 349. 60 $ 422. 24 $ 436. 56 $ 426. 24 $ 439. 60 $ 428. 32 $ 429. 52 $ 400. 32 $ 397. 36 $ 301. 36 $ 268. 32 $ 4, 632. 56 NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado PV Schematic Acknowledgements Questions
Project Overview Conclusion Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Depth 1 | DOAS w. Chilled Beams Total Savings | $206, 222. 03 Simple Payback | 4 years Recommendations Depth 2 | Hybrid PVT Solar System Total Savings | $7, 544. 22 Simple Payback | 13 years Recommendations NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Conclusion Acknowledgements Penn State University Architectural Engineering Faculty Dr. Stephen Treado | Thesis Advisor Robert Holland | Course Coordinators M. Kevin Parfitt | Course Coordinators National Rural Utilities Cooperative Finance Corporation John L. Moone CPM, CFM Industry Professionals Darren Bruce, PE, LEED AP BD+C | Sebesta Blomberg Trevor Boz, LEED AP | WSP Flack+Kurtz Alexandra Parris | KGD Architecture NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Penn State AE Class of 2012 Friends & Family Questions
Project Overview Systems Overview Existing Mech. System Depth 1 Depth 2 Breadth 1 Thank you! Questions? NRUCFC Headquarters Building | Margaret Mc. Namara | Mechanical | Advisor Dr. Stephen Treado Conclusion Acknowledgements Questions
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