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Technologies 1

Technologies 1. CHP (VA Dallas Case Study). Dallas VA Medical Center A CHP Case Study. Design Build Delivery of a Combined Heat and Power (CHP) Project for a Federal Client. Introductions Project Overview Vision Construction Activities Challenges/Lessons Learned Q&A. Agenda.

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Technologies 1

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  1. Technologies 1 CHP (VA Dallas Case Study)

  2. Dallas VA Medical CenterA CHP Case Study Design Build Delivery of a Combined Heat and Power (CHP) Project for a Federal Client

  3. Introductions Project Overview Vision Construction Activities Challenges/Lessons Learned Q&A Agenda

  4. Introductions Mike McLaughlin, PE Vice President of Engineering Jeff Gunlicks Project Manager

  5. Dallas VA Medical Center The referral center for VA North Texas Health Care System A major teaching and medical research center. An 84 acre campus less than 10 miles south of Dallas Providing a wide range of medical specialties Includes 544 beds and over 1 million sf of healthcare space Project Overview

  6. Project Overview Project Scope Add a 4.6 MW natural gas fired turbine to an existing central energy plant. Replace an existing steam boiler with a dual fuel fired Heat Recovery Steam Generator (HRSG) to replace an existing steam boiler. Integrate electricity into the existing 11MW usage. Existing Central Utility Plant Electrical Support Building Turbine Yard

  7. Project Vision What were the project goals? Reducing operating costs and saving energy Leveraging renewable energy and improve “Green” footprint Energy Security Why was CHP chosen? Consistent demand for power and heat. Integrated well with existing infrastructure Improved energy independence Where did the owner start? Feasibility studythat assessed the economical, technical andfunding options. Investigation included Biodiesel, Landfill Gas and Biomass and conventional (natural gas)

  8. Traditional System Power Heat 45% Efficient Power Plant Boiler Plant

  9. Combined System Power Heat 80% Efficient Generator Heat Recovery

  10. Combined Heat & Power Gas fired engines ½ – 2.5 MW Micro Turbines ½ - 1 MW Gas Turbines 5 – 50 MW Heat Power Heating Water 180F-220F Steam 25,000lbs/hr 400,000 lbs/hr Dallas VA

  11. Combined Heat & Power Power Heat Generator Air Inlet Filter Heat Recovery Steam Generator Bypass Duct Gas Turbine Diverter Valve Supplementary Burner Heat Recovery Turbine

  12. Combined Heat & Power Heat Recovery Steam Generator A custom piece of equipment design and fabricated to meet the project requirements Essentially a large water tube boiler using turbine exhaust heat as heat source Heat Heat Recovery Steam Generator Supplementary Burner Actual Dallas VAMC HRSG during hydrostatic pressure test Heat Recovery

  13. Project Schedule DESIGN CONSTRUCTION Dec 2013: NG Pipeline Complete Aug 2011: Proposal Submitted Dec 2013: Target Turnover

  14. CHP Construction Considerations: Access to site Space for cranes to set up Equipment Delivery & Rigging: Turbine

  15. CHP Construction Equipment Delivery & Rigging: HRSG Considerations: • Access to site • Space for cranes to set up • Size of doors in facility

  16. CHP Construction Considerations: Access to site Space for cranes to set up Equipment Delivery & Rigging: NG Compressor

  17. CHP Construction Site Construction: Considerations: • Accessibility • Noise & Emissions • Proximity to Utilities

  18. CHP Construction Site Construction: Turbine exhaust Inlet Air Chilling Coils Generator and Turbine (Inside Enclosure)

  19. CHP Construction Fuel Train Site Construction: Exhaust from Turbine Water Tube Boiler Main Stack Steam Connection Economizer Duct Burner

  20. CHP Construction Natural Gas Supply: • Availability of Natural Gas will dictate size/cost of the Natural Gas Compressor. • Turbine required 230 psig natural gas. • Existing gas supply was 20 psig which would have required a 300 HP compressor. • Government opted to contract for a dedicated 100-180 psig natural gas line which dropped NG Compressor to 100 HP saving significant energy • Start up currently waiting on completion of NG line.

  21. CHP Construction Other Considerations: • Construction in an operating Central Energy Plant • Shut-downs/high risk operations: Hot tap, Electrical tie-ins • Working closely with the end-user throughout the duration of the project facilitated: • Deliver the owner products that meet their needs • (example: sight glass change out). • Facility operators become familiar with equipment, and manufacturers representatives. • RFI’s answered quickly with design-build delivery and access to end user. • Extensive training at facility turnover for the operators.

  22. CHP Construction Other Considerations: • Manufacturers Representatives are vital to the effort • Coordination is critical • Expertise is invaluable • Planning for Long Lead Items • Production of Shop Drawing • Payment Schedule and Financing • Allow for innovation and design flexibility (design-build): • Alternative Solutions within the contractual requirements • Improved performance with cost savings

  23. Summary Benefits: • Improved energy efficiency • Energy Independence • Opportunities to leverage renewable energy sources • Environmental Stewardship Options: • Available for systems from ½ MW to 50+ MW • Heat is available as heating hot water or steam • Systems can utilize packaged or custom equipment Unique Considerations: • Design to best match your application • Construction offers different challenges that traditional construction. • Financing and Utility Rebates are commonly available. Select qualified partners to and contract delivery methods

  24. Questions

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