1 / 25

Bryan Long EIT, CGD-IT NAVFAC ESC Port Hueneme CA 805-982-5177 Bryan.p.long@navy.mil

Utilizing Alternative Heat Source / Sinks to Heat / Cool Navy Facilities IGHSPA Conference, Nashville, TN October 2, 2008. Bryan Long EIT, CGD-IT NAVFAC ESC Port Hueneme CA 805-982-5177 Bryan.p.long@navy.mil. Presentation Outline.

keitha
Download Presentation

Bryan Long EIT, CGD-IT NAVFAC ESC Port Hueneme CA 805-982-5177 Bryan.p.long@navy.mil

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Utilizing Alternative Heat Source / Sinks to Heat / Cool Navy Facilities IGHSPA Conference, Nashville, TNOctober 2, 2008 Bryan Long EIT, CGD-ITNAVFAC ESCPort Hueneme CA 805-982-5177 Bryan.p.long@navy.mil

  2. Presentation Outline • Energy efficiency / renewable energy drivers for Federal Government • Existing challenges with implementing traditional GSHP technology in certain locations • Alternative options to implement high efficient HVAC technology • Navy projects constructed and proposed • Dam Neck HRSD Loop

  3. Federal Requirements for Energy Efficiency / Renewable Energy • EPACT 05 - Reduce energy expenditures by 2% per year from 2003 baseline for the measurement of energy savings • “… to the extent economically feasible and technically practical, the following (electrical energy consumption)shall be renewable:” • a) > 3% in FY 2007 - 2009 • b) > 5% in FY 2010 - 2012 • c) > 7.5% in FY 2013 and thereafter • EO 13423 • (i) ½ renewable energy consumed in an FY comes from “new” renewable sources, • (ii) to the extent feasible, implement renewable energy generation on agency property • Improve energy efficiency and reduce greenhouse gas emissions • 3 percent annually through the end of fiscal year 2015 • or 30 percent by the end of fiscal year 2015 • EISA 2007 • Sec. 433 Federal Building Energy Efficiency Performance Standards • Reduce Fossil Fuel Use • built/renovated in 2010 must cut fossil-fuel dependency by 55% • Eliminate use of fossil fuel energy for new/renovated buildings by 2030 • NDAA 2007 sets a goal of 25% energy produced on site at DOD facilities by renewables by 2025 • FEMP guidance for EPACT 05 and EO13423 (guidance not yet available for EISA 07): • http://www1.eere.energy.gov/temp/renewable_energy/renewable_fedrequire.html

  4. Challenges with incorporating traditional GSHP technologies • Land restrictions can make it difficult to install well fields in densely populated areas • Coastal areas of the country often populated, space a premium • Poor soil thermal conductivity making traditional GSHP too cost prohibitive • Certain areas of the country still do not have strong GSHP industry driving up the install cost (western states) • In certain locations, alternative heat source / sinks exist making them the best / most cost effective option

  5. Alternative Heat Source / Sink Options • Sea / Lake Water heat source / sink • Renewable, very efficient cooling technology • Reduce energy consumption to generate chilled water • No cooling tower (eliminate fresh water use for evaporative cooling) • Water / Wastewater Discharge heat source / sink • Navy DamNeck HRSD loop • Municipal Water Supply heat source / sink??

  6. Sea/Lake Water Source System Sea/Lake Water Intake and Return (open loop) Central Heat Exchange and Pumping Facility Chilled Water Distribution and Building Systems Source: Makai Ocean Engineering, Inc. Alternative Heat Source / Sink Options

  7. Technology MaturityPurdy’s Wharf Halifax, Canada • Single Building Application • Seawater provides all cooling for about 10 months per year • Reduced operation/ maintenance costs • Savings of $117,000/year • Simple payback of 2.3 years Source: http://www.ecbcs.org/docs/annex_28_case_study_buildings.pdf

  8. Technology MaturityLake Source Cooling - Cornell university • District Cooling Application • Reduces the campus energy use for cooling by 80% • Designed to last over 75 to 100 years, over twice the typical life of chillers Source: http://www.utilities.cornell.edu/utl_ldlsc.html

  9. US NAVY DAM NECK ANNEX HRSD LOOP SYSTEM

  10. Dam Neck Annex Project History • DOE authorization to Trane in Dec 2004 • Request for proposal to Trane in Jan 2006 • Building proposals submitted and approved in May-June 2006 • HRSD Water Reuse MOA signed in Aug 2006 • Final proposal from Trane in Aug 2006 • Navy review of final proposal in Sep 2006 • Congressional notification of proposed project in Sep 2006 • Contract award in Dec 2006 • Contract construction completion in Sep 2008 • Ribbon cutting ceremony on October 9, 2008

  11. Dam Neck Annex Project Site HRSD Atlantic Treatment Plant Heat Exchanger Plant HRSD Effluent Line Condenser Cooling Water Loop (Typ.) Atlantic Ocean

  12. Ground Source Heat Pump Energy Conservation Measure • 10 Buildings (487,231 SF) • 451 Tons of HVAC (89 GSHP Units) • 411 Tons of HVAC on the HRSD Condenser Loop • Bldg 448 - 40 Tons of HVAC using Vertical Drilling GHP Technology • Well field Sizing: 326 ft/ton in 40 wells • GSHP’s are classified as a Renewable Energy Source

  13. Heating, Ventilation and Air Conditioning Energy Conservation Measure • HVAC Improvements in 14 Buildings (1,624,269 SF) • Condenser Cooling Water Loop (Cooled by HRSD effluent) provided to 15 Buildings (1,530,155 SF) • 2,142 Tons of New-Installed HVAC on Condenser Cooling Water Loop • 1,400+ Tons of Existing HVAC on Condenser Cooling Water Loop • 10 miles of Condenser Distribution Loop Piping in Sizes from 2” to 36” diameter • 0.5 miles of HRSD/Heat Exchange Plant Piping, 36” diameter

  14. HRSD Effluent Heat Exchange System • Existing HRSD Atlantic Treatment Plant Effluent Line runs through Dam Neck Annex (HRSD easement) • Project Uses 14MGD as heat sink for Condenser Loop • Water is used to cool condenser water loop water • Effluent water and condenser cooling water do not mix • Qualifies as a renewable energy source • HRSD Constructed, Own, and Operate Tapping Sleeves and Valves • Project Paid HRSD for Tapping Sleeves and Valves • No Cost for Water – only a small annual administration fee. • MOA in effect until 2027 (HRSD easement expires)

  15. Heat Exchanger/HRSD Effluent System HRSD Atlantic Treatment Plant Condenser Cooling Water Loop Building (Chiller) Typ. Building (GSHP) Typ. HRSD Effluent Line Heat Exchangers Building (GSHP) Typ. Building (Chiller) Typ. Atlantic Ocean

  16. Tapping Sleeves and Valves

  17. Tapping Sleeves and Valves (cont’d)

  18. Heat Exchanger Plant

  19. Condenser Cooling Water Loop

  20. HRSD Effluent/GSHP Comparison • GHP Drilling Costs and HRSD Effluent/Condenser Cooling Water Loop Costs approximately equal • Effluent Water is a more efficient source than GSHP (Winter & Summer) • No issues related to building up ground temperatures over time • Effluent and GSHP Systems equal life expectancy • HRSD Effluent System allows use on existing chillers – Greater Use of the Navy investment • Many existing exterior cooling towers eliminated • HRSD Effluent/Condenser Cooling Water Loop has large growth potential at minimal cost Greater Use, More Efficient – Costs the Same

  21. Dam Neck ESPCProject Benefits and Attributes • Project Savings pay for All Project Costs • Trane Manufactured Products Warranted for Project Term (17 years) • Service and Preventative Maintenance provided by Trane for the Project Term (17 years) • Non-Trane Installed Equipment Repair and Replacement Escrow Fund documented with Project Savings (17 years) • Annual Measurement and Verification of Project Savings (17 years) • HRSD Effluent Heat Exchange System Expandable at minimal cost • Equipment protected from corrosive environment (new equipment either underground or in buildings) • Energy Efficient Equipment Infrastructure Improvements

  22. Project Financial Statistics • Project Cost $32,885,728 • Annual Savings (FY06 Baseline) $2,828,636 • Simple Payback: 11.6 years • Energy Savings $2,299,364 • Steam $2,133,361 • Electricity $ 383,770 • Natural Gas ($ 556,189) • Fuel Oil $ 6,322 • Water /Chilled Water $ 200,249 • Sewer $ 131,851 • Operations and Maintenance Savings $ 529,272 • Service $ 304,221 • PM $ 225,051

  23. Additional Navy Alternative GSHP projects Underway • WSHPs to be installed in berthing barges in the Puget Sound, WA • Barges used to house sailors that work on ships • Currently barges tie into base’s utilities including steam and electricity to provide heating / cooling for the barges • WSHPs tied directly to the Puget Sound will allow for more efficient heating / cooling of barges • Conducting feasibility studies on: • SeaWater Cooling in Yokosuka, JP • Utilizing waste heat from a computer datacenter to heat exterior of building in Monterey, CA • Utilizing water from a remediation site to cool a large maintenance center in Barstow, CA

  24. Jody Wilkins, Federal Sector Project Developer Roger Shull, Norfolk Sales District Don Delegrange, Construction Project Manager Hampton Roads Sanitation District Ted Henifin, HRSD Director Karen Harr, Chief of Water Reuse John (J) Dano, Project Manager NAVFAC Sean Foley, Contracting Officer Robert Harvey, Project Facilitator Andrew Porter, Navy Technical Representative ENS. Michelle Caponigro, Construction Manager Trane David Hayden, Federal Account Executive Key Partners – Dam Neck HRSD Project Presentation Acknowledgements

  25. QUESTIONS?? Bryan Long, EIT, CGD-ITNAVFAC ESCPort Hueneme CA 805-982-5177 Bryan.p.long@navy.mil “All we have to decide is what to do with the time that is given us.” -Gandalf, Lord of The Rings, The Fellowship of the Ring

More Related