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Senior Thesis Presentation

Senior Thesis Presentation. Hunter’s Point South School. Queens, New York. Britt Kern Mechanical Option Advisor: Dr. Treado. Outline. Building Summary. Introduction Building Summary Site Plan Existing Mechanical Proposed Redesign Mechanical Depth Breadth – Electrical Conclusion.

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Senior Thesis Presentation

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  1. Senior Thesis Presentation Hunter’s Point South School Queens,NewYork Britt Kern Mechanical Option Advisor: Dr. Treado

  2. Outline Building Summary • Introduction • Building Summary • Site Plan • Existing Mechanical • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Conclusion Size: 153,769 sf Occupancy: IM/HS Schoolhouse Levels: 5 Stories/No Cellar/Penthouse Cost: $61,098,000 Construction Dates: Jan 10, 2011 to Oct 7, 2013 Project Team Architect: FXFOWLE Architects Structural Ysreal A. Seinuk MEP: Kallen & Lemelson CM: Skanska Hunter’s Point South School Mechanical Option Britt Kern

  3. Outline Building Summary • Introduction • Building Summary • Site Plan • Existing Mechanical • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Conclusion • Part of the Hunter’s Point South Project • Redevelopment of Waterfront • Vibrant • Sustainable • Middle-Income • Urban Community N Hunter’s Point South School Mechanical Option Britt Kern

  4. Outline Existing Mechanical ACH-1 AHU 1 • Introduction • Building Summary • Site Plan • Existing Mechanical • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Conclusion • AHU’s 1, 2, and 3 = VAV • AHU’s 4, 5, and 6 = CAV • 4 Condensing Boilers • Fin Tube Radiators • (2) 276 ton chillers AHU 2 Mechanical Penthouse AHU 6 AHU 3 ACH-2 • Problems? • Minimum Ventilation • No Energy Recovery AHU 4 AHU 5 Hunter’s Point South School Mechanical Option Britt Kern

  5. Outline Proposed Redesign • Waterside • New Chillers • Secondary Chilled Water Loop • Introduction • ProposedRedesign • Objectives • Mechanical Depth • Breadth – Electrical • Conclusion • Goals • Ventilation Always Met • Increase Sustainability • Better Room Comfort Control • Airside • Replace AHU’s 1-3 with DOAS • Total Energy Recovery Wheel • Fan-Powered Induction Units (FPIU’s) • Breadths • Photovoltaic Solar Panel Array • Structural Roof Analysis Hunter’s Point South School Mechanical Option Britt Kern

  6. Outline Mechanical Depth • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion • Ventilation Air Based On: • NYC Mechanical Code • 30% Above ASHRAE Std. 62.1 • Latent Load • Reduction in 18% OA and 55% SA • Exhaust Rates and ESP of Fans OA SA Hunter’s Point South School Mechanical Option Britt Kern

  7. Outline Mechanical Depth • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion • 2 DOAS Specified by Manufacturer • Total Energy Recovery Wheels • All Preheating of OA 12.8°F, -5.4 DP 72°F, 30% RH Summer Design Winter Design Hunter’s Point South School Mechanical Option Britt Kern

  8. Outline Mechanical Depth • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion • Find CHW Supply Temp • Size Coils for Heating and Cooling • Optional MERV 8 filter – 1 LEED Point Supply CHW 58°F 75°F, 55% RH Hunter’s Point South School Mechanical Option Britt Kern

  9. Outline Mechanical Depth Secondary Chilled Water Loop Current Chilled Water Loop • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion • Current CHW Loop Re-Used: • (2) 225 ton chillers • LWT 44°F • Higher CHW Temp for FPIU’s • Secondary CHW Loop Created • 33.5 ton chiller • LWT 58°F Hunter’s Point South School Mechanical Option Britt Kern

  10. Outline Mechanical Depth • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion ρ= constant Hunter’s Point South School Mechanical Option Britt Kern

  11. Outline Mechanical Depth Exhaust Outlet Supply Diffuser • Compare Old and New Systems • Validate New System • 3 Models: • VAV 100% Flow • VAV 30% Flow • FPIU • Criteria: • No Drafts (<40 fpm) • Uniform Temperature (Setpoint 72°F) • Minimal Temperature Stratification • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion Student Hunter’s Point South School Mechanical Option Britt Kern

  12. Outline Mechanical Depth 53 fpm 74.5°F 42 fpm 77°F 12 fpm • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion • Results: • VAV 100% Flow • -Some Drafts • -High Room Temp • VAV 30% Flow • -Lots of Drafts • -High Room Temp 22 fpm 55 fpm 72°F 76°F Hunter’s Point South School Mechanical Option Britt Kern

  13. Outline Mechanical Depth 73°F 72°F • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion • Results: • FPIU • No Drafts • Steady Room Temp (72-73°F) • Conclusions: • VAV is Problematic • FPIU = Good Air Distribution/Thermal Comfort 60 fpm 22 fpm Hunter’s Point South School Mechanical Option Britt Kern

  14. Outline Mechanical Depth Natural Gas Usage by Month Electricity Usage by Month • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion • Reduction in: • Electricity = 7% (5% due to solar) • Natural Gas = 41% • Emissions = 16% CO2e Hunter’s Point South School Mechanical Option Britt Kern

  15. Outline Mechanical Depth • Introduction • Proposed Redesign • Mechanical Depth • DOAS/Wheel • FPIU • Chillers/Loops • CFD (MAE) • Results • Breadth – Electrical • Conclusion • Costs New Rooftop Units • Savings = $622,174 • Costs Associated with FPIU’s • Savings = $651,137 • Initial Cost Savings = $1,273,311 • Enough Savings to Finance Solar Array Hunter’s Point South School Mechanical Option Britt Kern

  16. Inverter Combiner Boxes Outline Electrical Breadth • Introduction • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Roof Layout • Schematic • Payback Analysis • Conclusion 68.99 kW Hunter’s Point South School Mechanical Option Britt Kern

  17. Inverter Combiner Boxes Outline Electrical Breadth • Introduction • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Roof Layout • Schematic • Payback Analysis • Conclusion < 9’ setback Hunter’s Point South School Mechanical Option Britt Kern

  18. Outline Electrical Breadth 100 feet away Difference in Height = 153 ft - 73 ft = 80 ft SohCahToa: Tan(x degrees) = 80 / 100 x = 38.7 degrees From 8:25 am on no shading. • Introduction • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Roof Layout • Schematic • Payback Analysis • Conclusion Angle 80 ft 100 ft Summer Solstice N Hunter’s Point South School Mechanical Option Britt Kern

  19. Outline Electrical Breadth Switchboard 2 DC Disconnect Inverter (75 kW) X 10 strings • Introduction • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Roof Layout • Schematic • Payback Analysis • Conclusion Combiner Box AC Disconnect GFI Fuse X 10 strings Combiner Box X 8 strings Combiner Box Hunter’s Point South School Mechanical Option Britt Kern

  20. Outline Electrical Breadth • Introduction • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Roof Layout • Schematic • Payback Analysis • Conclusion • Initial Costs $296,666 • After Incentives = $60,075 • $14,987 Savings/year • 188% Life Cycle Payback • Profit = $260,745 Hunter’s Point South School Mechanical Option Britt Kern

  21. Outline Conclusion • Introduction • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Conclusion • LCC Analysis • Acknowledgments • Questions • Structural: Girders/Non-Composite Deck • 25 Year LCC Analysis Performed • NPV Savings = $2,018,185 Hunter’s Point South School Mechanical Option Britt Kern

  22. Outline Conclusion • Introduction • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Conclusion • LCC Analysis • Acknowledgments • Questions • Contacts: • Patrick Murphy Vanderweil Engineers • Chris Bratz Meta Engineers • Carter TseKallen & Lemelson • Sharvil Patel Skanska • Manufacturers: • Tim Dorman (DOAS/Wheels) • David Cunningham (Chillers) • Justin Anderson (FPIU) • Advisor: Dr. Stephen Treado • AE Professors/Faculty and Fellow Students • Family and Friends Hunter’s Point South School Mechanical Option Britt Kern

  23. Outline Conclusion • Introduction • Proposed Redesign • Mechanical Depth • Breadth – Electrical • Conclusion • LCC Analysis • Acknowledgments • Questions • Questions? Hunter’s Point South School Mechanical Option Britt Kern

  24. LCC Analysis Appendices Mechanical Option Britt Kern

  25. Exhaust Rates NC for Ducts Hunter’s Point South School Mechanical Option Britt Kern

  26. Cost Breakdown/Floor Plan Appendices Hunter’s Point South School Mechanical Option Britt Kern

  27. FPIU Dimensions Hunter’s Point South School Mechanical Option Britt Kern

  28. Comparing Ventilation Energy Prices Hunter’s Point South School Mechanical Option Britt Kern

  29. ESP of Fans Hunter’s Point South School Mechanical Option Britt Kern

  30. Winter Solstice No Shadows N Hunter’s Point South School Mechanical Option Britt Kern

  31. Equinox No Shadows N Hunter’s Point South School Mechanical Option Britt Kern

  32. Summer Solstice 100 feet away Difference in Height = 153 ft - 73 ft = 80 ft SohCahToa: Tan(x degrees) = 80 / 100 x = 38.7 degrees From 8:25 am on no shading. angle 80 ft 100 ft 9 am, Summer Solstice Hunter’s Point South School Mechanical Option Britt Kern

  33. Room Conditions Hunter’s Point South School Mechanical Option Britt Kern

  34. Trace Modeling FPIU • Under Create Systems  Option Tab  Advanced Options Hunter’s Point South School Mechanical Option Britt Kern

  35. Adjacent New Buildings Hunter’s Point South School Mechanical Option Britt Kern

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