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Bond Street Wharf Renovation Project Presentation - Timothy R. Nolan

Dive into Timothy R. Nolan's presentation outlining the renovation project at Bond Street Wharf in Baltimore, Maryland. Explore existing conditions, mechanical redesign, electrical systems, structural engineering, and cost analysis. Discover the benefits of heat pumps and the meticulous planning behind the project. Gain insights into the architecture, mechanical systems, and sustainable solutions implemented in this innovative refurbishment.

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Bond Street Wharf Renovation Project Presentation - Timothy R. Nolan

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Presentation Transcript

  1. The Bond Street Wharf Baltimore,Maryland April 17, 2003 Consultant – Mr. Freihaut Timothy R. Nolan

  2. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  3. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  4. Background • 6 – Stories, Multi-use Building • 216,000 Total square feet – 12,300 square feet of retail Timothy R. Nolan

  5. Location Timothy R. Nolan

  6. Project Team Owner:Bond Street Wharf Architect: RTKL Inc. Structural Engineers: RTKL Inc. MEPT Engineers: RTKL Inc. Civil Engineers: STV Inc. Interior/Graphic Designers: RTKL Inc. Landscape Architects: Mahan Rykiel Associates Prime Contractor: Struever Bros. Eccles & Rouse Timothy R. Nolan

  7. Architecture • Modeled after the Terminal Warehouse • Typical red brick façade • Long and narrow • Waterfront promenade, terrace on the roof and boat dock Timothy R. Nolan

  8. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  9. Mechanical System • 13” Tall raised floor system with electric reheat around the perimeter • Removable floor panels with occupant controlled diffusers Timothy R. Nolan

  10. Condenser Water Loop (Source) Timothy R. Nolan

  11. Condenser Water Loop (Load) Timothy R. Nolan

  12. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  13. About Heat Pumps • Use earth/water as a heat sink in the summer and a heat source in the winter • Summer - Take heat from the building and discharge into the ground/water • Winter – Transfer heat from the ground/water to the building • Five types of installation: Ground (Vertical and Horizontal), Ground Water (Open and Closed) and Surface Water Timothy R. Nolan

  14. Benefits • Low energy costs – 25% to 50% than conventional systems • Low maintenance cost • Design flexibility • Aesthetics Timothy R. Nolan

  15. Heat Pump Criteria • Is the body of water deep enough? • What are the summer and winter water temperatures? • Is there enough water area for the coils? • Does the surface of the water freeze? Timothy R. Nolan

  16. Chesapeake Bay Conditions • 25 Feet deep • Plenty of room for Coils • Average Bay temperatures July – 80 oF Winter – 40 oF Timothy R. Nolan

  17. Load Calculations • Carrier E20-II HAP 4.10 • Design conditions of .4% • Max cooling load occurs at July 1500 Timothy R. Nolan

  18. Heat Pump Sizing • No < 95% to no > 125% sensible cooling load Timothy R. Nolan

  19. Coil Sizing • Summer Approach = 10 oF • Winter Approach = -5 oF LC= August Ft/Ton x Total Building Sensible Cooling (Btu/Hr) / 12,000 Btu/Hr/Ton LH= Winter Ft/Ton x Total Building Heating (Btu/Hr) / 12,000 Btu/Hr/Ton Q = 3 Gpm/Ton x Total Building Sensible Cooling (Btu/Hr) / 12,000 Btu/Hr/Ton 280 Feet/Ton 310 Feet/Ton Timothy R. Nolan

  20. Coil Layout • 500 Feet/Bundle • Total Length / 500 Ft/Bundle = 259 Bundles • Total Gpm / Number of Bundles = 5.35 Gpm/Bundle 17 Run outs of 8 Coils 13 Run outs of 8 Coils and 3 Run outs of 9 Coils Timothy R. Nolan

  21. Coil Layout Typical Pipe Connection Elevation View of Coils Timothy R. Nolan

  22. Heat Pump Layout 3-D view of Pipe Diagram (Cooling Mode) Heat Pump Clearance Timothy R. Nolan

  23. Controls • Differential pressure sensor near the furthest heat pump • DP sensor connects to a variable speed pump control system that controls the pumps. Timothy R. Nolan

  24. Removal of Equipment • 2 – Cooling towers • 2 – Heat exchangers • 3 – Pumps • Pipe associated with equipment Timothy R. Nolan

  25. Cost • RS Means Mechanical Cost Data 2003 • Heat Pump - $711,180 • Fittings, Pipe and Pump - $218,932 Total Cost = $930,112 • Cooling towers - $84,200 • Heat exchangers - $70,668 • Pumps - $91,170 • Pipe and fittings - $207,743 Total Savings = $454,401 Cost Difference = $ 475,711 Timothy R. Nolan

  26. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  27. Objective • To resize the Motor Control Center • Resize the feeder to the MCC • Calculate the savings from the resizing and wires to the removed equipment Timothy R. Nolan

  28. Electrical Conditions Existing • MCC - 1000 Amps • Feeder - 3 sets of 4 #400 MCM • Wires to Equipment • New • MCC - 300 Amps • Feeder - 3 sets of 4 3/0 THW Timothy R. Nolan

  29. Electrical Cost Timothy R. Nolan

  30. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  31. Existing Structural Frame • 4’-2” Elevation Timothy R. Nolan

  32. Frame Redesign • Cooling Tower weight is 10,000lbs • Dimensions – 8.5’ x 10’ • Beam must remain at 20’ Timothy R. Nolan

  33. Beam Design From the LRFD Manual W8x18 Timothy R. Nolan

  34. Structural Costs Savings • Original Cost - $4,900 • New Cost - $1,192 • Cost Savings -$3,708 Timothy R. Nolan

  35. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  36. Heat Pump Costs/Savings • Mechanical Savings -$454,401 • Electrical Savings - $404,453 • Structural Savings - $3,708 Total Savings - $862,562 • Heat Pump Costs - $711,180 • Fittings, Pipe and other materials - $218,932 Total Costs - $930,112 Cost Difference = $67,550 Timothy R. Nolan

  37. Payback Period • Data was taken from Existing Buildings with Heat Pump. Payback Period = 3.4 years Timothy R. Nolan

  38. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  39. Conclusion/Recommendations • Higher Initial Cost of $67,550 • Payback Period of 3.4 years • Install Heat Pump system instead of condenser water loop • Integrate Heat Pumps system early in design Timothy R. Nolan

  40. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  41. Acknowledgements RTKL Inc. Dr. Freihaut – Mechanical Consultant Jay Sekel – Structural Consultant Family – Mom and Brother Girlfriend – Loan AE Faculty Sharon Williams – Backbone of AE Jonathan Partner in Crime – Kevin Angle AE Students Roommates – Courtney, Courtney 2, Erin The Big Man’s Club Timothy R. Nolan

  42. Presentation Outline • Existing Conditions • Mechanical Existing Conditions • Mechanical Redesign • Electrical Breadth • Structural Breadth • Costs • Conclusion/Recommendations • Acknowledgements • Questions Timothy R. Nolan

  43. Questions? Timothy R. Nolan

  44. Motor Full Load Current – NEC 430-150 • NEC 430-22: Conductor Must be Sized for 125% of FLC • Conductors – NEC 310-16 • Conduit – NEC Table C1 • NEC Table 1 Ch. 9: Only 40% of Conduit to be Filled • Circuit Breakers – NEC 440-22 Timothy R. Nolan

  45. Timothy Nolan The Bond Street Wharf Mechanical Timothy R. Nolan

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