VIMS Seawater Research Laboratory Dan DiCriscio AE Senior Thesis Mechanical Option 2007.

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Presentation transcript:

VIMS Seawater Research Laboratory Dan DiCriscio AE Senior Thesis Mechanical Option 2007

VIMS Seawater Research Laboratory Outline Dan DiCriscio AE Senior Thesis 2007 æ Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions VIMS Seawater Research Laboratory

Background-Building Stats Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Building Size: 40,000 ft 2 Building Type/Occupancy: Laboratory Construction Dates: 2005 – 2007

VIMS Seawater Research Laboratory Background-Project Team Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Owner: Virginia Institute of Marine Science Architects & Engineers: Clark Nexsen, Norfolk, VA Lab Consultants: RMF, Mt. Pleasant, SC Contractor: W. M. Jordan, Hampton Roads, VA

VIMS Seawater Research Laboratory Background-Location Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ

VIMS Seawater Research Laboratory Background-Location Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ

VIMS Seawater Research Laboratory Existing Conditions Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ The mechanical system supplies 100% OA to the entire building. Administration spaces to be converted to Lab spaces Additional plant source components (chillers & boilers) will be required, but the existing distribution system is sized for a 25% increase in load. Mechanical equipment is necessary for laboratory process purposes. VIMS Seawater Research Laboratory

Existing Conditions Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Calculated Building Loads & Load Profile (based on typical medium commercial load profile data from Pacific Electric & Gas Company)

VIMS Seawater Research Laboratory Existing Conditions Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Run Around Energy Recovery Loop is already utilized Distributed Pump System is already utilized Enthalpy wheels cannot be utilized because of the risk of cross contamination of the supply air VIMS Seawater Research Laboratory

Redesign Goals Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Reduce Building Energy Cost High energy consumption Required mechanical equipment Reduce Emissions Generated by Building VA utilities 43% coal LEED High pollution generation High energy cost

VIMS Seawater Research Laboratory System Redesign Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Initial System Resign Thermal & electrical energy storage Energy stored as hydrogen Generate hydrogen through electrolysis powered by renewable energy sources Hydrogen to be used as fuel for cogeneration system

VIMS Seawater Research Laboratory System Redesign Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Initial System Resign Problems On-site renewable energy sources are not adequate for system Hydrogen generators don’t meet required specifications

VIMS Seawater Research Laboratory System Redesign Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Adjusted Redesign Cogeneration What is it? On-site power generation in which the waste heat created by the power generator is recovered and used to heat and cool the building as needed.

VIMS Seawater Research Laboratory System Redesign - Equipment Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Cogeneration Equipment Options? Typically the 4 most common types of generators are: I.C.R. Engines Too Noisy Fuel Cells Too Expensive MicroTurbines Lacks Adequate Thermal Capacity For District Applications Gas Turbines Good Fit For Design

VIMS Seawater Research Laboratory System Redesign - Equipment Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Cogeneration – Generator Equipment Used CAT Solar Centaur 40 Gas Turbine

VIMS Seawater Research Laboratory System Redesign - Equipment Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Cogeneration – Generator Equipment Used CAT Solar Centaur 40 Gas Turbine

VIMS Seawater Research Laboratory System Redesign - Equipment Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Cogeneration Heat Recovery The CAT Centaur 40 Generator Set includes a HRSG The HRSG generates steam by recovering the waste heat in the exhaust stream of the gas turbine Steam is used to drive the absorption chillers

VIMS Seawater Research Laboratory System Redesign - Equipment Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Cogeneration Additional Equipment To get the most use of the recovered heat from the generator Absorption Chillers should be used. Absorption Chillers use steam created from the HRSG and can be used to heat and cool a building. The absorption chillers require a condenser water loop

VIMS Seawater Research Laboratory System Redesign - Equipment Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Cogeneration Additional Equipment Equipment required with the condenser water loop: Condenser Water Pumps Cooling Towers

VIMS Seawater Research Laboratory System Redesign - Equipment Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Cogeneration – Absorption Chiller Equipment Used York YIA-ST-2A3 Single Stage Absorption Chiller

VIMS Seawater Research Laboratory System Redesign - Equipment Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Cogeneration – Condenser Water Pump Equipment Used Bell & Gossett

VIMS Seawater Research Laboratory System Redesign - Equipment Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Cogeneration – Cooling Tower Equipment Used Marley NC8303FL1 Cooling Tower

VIMS Seawater Research Laboratory Redesign Analysis Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Reduced Emissions Reduced Energy Cost Pay Back LEED Credits

VIMS Seawater Research Laboratory Redesign Analysis - Emissions Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Emissions Generated by Existing Building and Surrounding Buildings

VIMS Seawater Research Laboratory Redesign Analysis - Emissions Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Emissions Generated by Buildings serviced by CHP System

VIMS Seawater Research Laboratory Redesign Analysis - Emissions Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Emissions Reduction

VIMS Seawater Research Laboratory Redesign Analysis – Energy Costs Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Reduced Energy Costs Spark Gap = Cost/MMBTUe – Cost/MMBTUthermal Spark Gap ~ $15 Energy Savings Average Annual Savings: $876,739 Lifetime Savings: $20,165,001

VIMS Seawater Research Laboratory Redesign Analysis – Pay Back Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Equipment First Cost: $6,020,920 Simple Pay Back Period (without power sell back to the utilities): 10 Years Total savings over 22 years: $13,837,958

VIMS Seawater Research Laboratory Redesign Analysis – LEED Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ LEED Requirements Annual Efficiency: 70% > 60% Annual Energy Cost Reduction: 46% > 42% Absorption Chillers reduce CFC refrigerants Add Building systems commissioning to construction schedule

VIMS Seawater Research Laboratory Redesign Analysis – LEED Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ LEED Credits LEED EA Credit 1 42% Energy Cost Reduction = 10 points LEED EA Credit 4 No Refrigerants Used = 1 point LEED Total = 11 points

VIMS Seawater Research Laboratory Conclusions Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ CHP systems can significantly reduce emissions CHP systems can reduce energy costs This is a system the should be considered by VIMS Recommend further analysis of CHP system with actual energy loads of the surrounding buildings

VIMS Seawater Research Laboratory Acknowledgements Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ Thank You! Clark Nexsen Virginia Institute of Marine Science AE Faculty AE Peers Mom, Neil, Tony, and Ashley

VIMS Seawater Research Laboratory Questions? Outline Background Existing Conditions Redesign Goals System Redesign Redesign Analysis Conclusions Acknowledgements Questions Dan DiCriscio AE Senior Thesis 2007 æ ?