Slippery Rock University Student Union Slippery Rock, PA Gary Haffely Advisor: Dustin Eplee
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Gary Haffely Mechanical Option • Introduction • Existing Mechanical System Design Overview • Proposed Redesign Overview • Mechanical Depth Advisor: Dustin Eplee SRU Student Union Slippery Rock University Student Union Slippery Rock, PA • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements By Gary Haffely April 12, 2011 Option: Mechanical Advisor: Dustin Eplee Gary Haffely Mechanical Option • Introduction Project Information Building Name: SRU Student Union Location: Slippery Rock, PA Occupancy type: Student Center, Office • Existing Mechanical System Design Overview Size: 105,000 SF • Proposed Redesign Overview Total Cost $32,000,000 • Mechanical Depth Number of Stories: 3 Floors • DOAS with Active Chilled Beams Project Start July 2010 • Solar Thermal Water Heating System Project Finish November 2011 • Project Information • Project Goals • Structural Breadth Study • Credits and Acknowledgements Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option • Introduction • Project Information • Project Goals • Existing Mechanical System Design Overview • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Project Goals – Achieve LEED Silver Certification – Create a center gathering space for students, faculty and visitors – Demonstrate the benefits of green building design and sustainability – Provide enhanced comfort and control to occupants Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option • Introduction • Existing Mechanical System Design Overview Existing Mechanical System – Air Side - (5) VAV Air Handling Units with energy recovery wheel, heat pump, and variable frequency drives • Air Side - (3) Make-up Air Units • Heating - Ductless Split System • Cooling • Proposed Redesign Overview Utility Rates: • Mechanical Depth - Electricity: $0.0462/kWh • DOAS with Active Chilled Beams - Natural Gas: $1.16/therm • Solar Thermal Water Heating System - Steam: $1.057/therm • Structural Breadth Study • Credits and Acknowledgements Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Existing Mechanical System – Heating • Introduction • Existing Mechanical System Design Overview • Air Side • Heating • Cooling • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Water Source Heat Transfer System - Primary heating Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Existing Mechanical System – Heating • Introduction • Existing Mechanical System Design Overview • Air Side • Heating • Cooling Water Source Heat Transfer System - Primary heating Hot Water Heating System - Secondary heating • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams Peak Heating Load -6,630 Mbh peak heating load • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements $16,425.00/year Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Existing Mechanical System – Cooling • Introduction • Existing Mechanical System Design Overview -(2) 175 ton Closed Circuit Coolers • Air Side • Heating • Cooling Water Source Heat Transfer System - Primary cooling • Proposed Redesign Overview Peak Cooling Load • Mechanical Depth - 293 ton peak cooling load • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements $9,900.00/year Cooling Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Redesign Goals • Introduction Overall Redesign Goals: • Existing Mechanical System Design Overview – Apply alternative space heating and cooling techniques • Proposed Redesign Overview – Incorporate renewable energy sources • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements – Reduce energy consumption Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option DOAS Objectives • Introduction DOAS with Active Chilled Beams Objectives: • Existing Mechanical System Design Overview – Use a dedicated outdoor air system with active chilled beams to • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements adequately heat, cool and ventilate spaces – Maintain space comfort and control – Reduce the number of AHU’s – Decrease amount of sheet metal from ductwork Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Redesign System Components • Introduction Redesign Energy Saving Techniques: • Existing Mechanical System Design Overview 1. Dedicated Outdoor Air System • Proposed Redesign Overview – Uses minimum ventilation required • Mechanical Depth – Decouples latent and sensible loads • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements – Consumes less building materials Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Redesign System Components • Introduction Redesign Energy Saving Techniques: • Existing Mechanical System Design Overview 1. Dedicated Outdoor Air System • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements 2. Enthalpy Wheel – Recovers otherwise wasted energy from exhaust air – Preheats and preconditions incoming outdoor air reducing load on coils Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Redesign System Components • Introduction Redesign Energy Saving Techniques: • Existing Mechanical System Design Overview 1. Dedicated Outdoor Air System • Proposed Redesign Overview 2. Enthalpy Wheel • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements 3. Active Chilled Beams – Treats sensible space loads – Uses simple space controls – Reduces fan energy consumption Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Existing vs. Redesign Advisor: Dustin Eplee SRU Student Union • Introduction • Existing Mechanical System Design Overview • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Existing Layout Redesign Layout Gary Haffely Mechanical Option • Introduction • Existing Mechanical System Design Overview • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Existing vs. Redesign Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Energy and Cost Evaluation Advisor: Dustin Eplee SRU Student Union • Introduction • Existing Mechanical System Design Overview • Proposed Redesign Overview • Mechanical Depth Annual Cost Savings = $5,985.71 • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Additional Cost = $41,935.24 Estimated Payback: 7 years Gary Haffely Mechanical Option DOAS Redesign Conclusions • Introduction DOAS with Active Chilled Beams Conclusions: • Existing Mechanical System Design Overview – Meet heating, cooling and ventilation requirements while reducing • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements energy consumption – Successfully reduced the amount of sheet metal and total number of air handlers used in the system – Maintained space comfort and control Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Solar Collector Objectives • Introduction Solar Thermal Water Heating System Objectives: • Existing Mechanical System Design Overview – Utilize solar collectors to reduce steam consumption used for • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements domestic hot water – Maximize system performance – Determine system feasibility Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Solar Collector Design • Introduction Solar Thermal Water Heating Design: • Existing Mechanical System Design Overview - Replace 3000 square feet of green roof with 25 evacuated tube arrays • Proposed Redesign Overview - Orient collectors facing south at a tilt of 40 degrees Advisor: Dustin Eplee SRU Student Union • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Southern Face of SRU Student Union Gary Haffely Mechanical Option Solar Collector Cost Evaluation • Introduction Solar Thermal Water Heating Cost Analysis: • Existing Mechanical System Design Overview - Total First Cost: $85,610.00 • Proposed Redesign Overview - Total Annual Energy Savings: $2,141.65 • Mechanical Depth - Green Roof Savings: $45,300 - Estimated payback without government incentives: 18.8 years • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Solar Collector Design Conclusions • Introduction System Conclusions: • Existing Mechanical System Design Overview - Advantages: • Proposed Redesign Overview - Incorporate renewable energy sources • Mechanical Depth - Energy savings • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements - Disadvantages: - Collectors affect building aesthetics - Partial obstruction of interior office views - Successfully reduced steam consumption while maximizing possible system performance - Not worthwhile unless government incentives apply Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Structural Redesign Objectives • Introduction Structural Breadth Objectives: • Existing Mechanical System Design Overview - planks in the ballroom • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Change existing composite steel deck floor system to precast hollow core - Resize beam and girder framing based on new load - Determine total cost and feasibility of new system Superimposed Dead Load – 15 psf Dead Load – 15 psf Live Load (ballroom) – 100 psf Total Loads – 130 psf Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Redesign Process • Introduction • Existing Mechanical System Design Overview • Proposed Redesign Overview • Mechanical Depth • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Existing Layout Redesign Layout Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Advisor: Dustin Eplee SRU Student Union Structural Redesign Conclusions • Introduction Structural Breadth Conclusions: • Existing Mechanical System Design Overview - Overall Cost Savings: $83,287.75 • Proposed Redesign Overview - Will speed construction time • Mechanical Depth - Difficult to apply to entire building • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Existing Redesign Gary Haffely Mechanical Option Credits and Acknowledgements • Introduction - Herbert Carlson: Slippery Rock University • Existing Mechanical System Design Overview - Nick Rosko: CJL Engineering • Proposed Redesign Overview - Dustin Eplee: Thesis Advisor • Mechanical Depth - Friends and Family • DOAS with Active Chilled Beams • Solar Thermal Water Heating System • Structural Breadth Study • Credits and Acknowledgements Advisor: Dustin Eplee SRU Student Union Gary Haffely Mechanical Option Questions? Advisor: Dustin Eplee SRU Student Union
