Dallas/Fort Worth International Airport District Energy Plant Upgrades Project Making More with Less Sustainable Communities Conference Dallas, TX
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1 Dallas/Fort Worth International Airport District Energy Plant Upgrades Project Making More with Less Sustainable Communities Conference Dallas, TX March 10, 2009
2 Agenda DFW Capital Development Program District Energy Plant Upgrades Project Project Strategies Thermal Energy Storage System Boiler Emission Reductions Continuous Commissioning Program Green Industry Leadership 2
3 DFW Capital Development Program Five year, $2.7 B program 2.1 million square foot international passenger terminal (July 2005) Integrated 300-room Grand Hyatt Hotel 8,100-space, 8-level parking garage New Automated People Mover System (May 2005) 3
4 District Energy Plant Upgrade Project Major facility expansion/renovation driven by Capital Development Program Major goals of the Upgrades project: Increase thermal energy production capacity Renew infrastructure Deregulation planning/positioning Reduce environmental footprint Need to remain on-line during construction Phasing plan required 4
5 District Energy Plant Upgrade Project - Strategies Chiller Repowering Remove existing steam driven equipment (22,000 tons) Install 6-5,500 ton electric drive centrifugal chillers (33,000 tons) Boiler Replacement Remove existing equipment - 405,000 lbs/hr (~100 PPM NOx) Install 5 new boilers - 222, psig (~9 PPM NOx) Thermal Energy Storage Tank 6 million gallons, 90,000 ton-hours, ability to shift up to 15 MW off-peak Centralized Pre-Conditioned Air System 12,000 tons Cooling 51 MMBtu Heating Energy efficient design and technology features will produce a projected avoided future energy use of 25 million MMBTUs over the useful life of the facilities. 5
6 District Energy Plant Equipment Six steam boilers (total 260,300 pph) Six 5,500-ton centrifugal chillers six 150-HP constant speed primary pumps four 450-HP VFD secondary pumps One 90,000 ton-hr Thermal Energy Storage (TES) tank Eight cooling towers each with one 150-HP two speed fan Five 1,350-ton two-stage centrifugal glycol chillers four 250-HP VFD primary pumps four 450-HP VFD secondary pumps Six 1,130-ton plate and frame heat exchangers (HX s) 6
7 7
8 Energy Plaza Chilled Water/Thermal Energy Storage System Configuration TES Tank C H I L L E R C H I L L E R C H I L L E R Decoupler (closed) Building/ Campus Loads Variable Volume Distribution Pumps 8
9 Tons Sustainable Communities Conference, March 2009 Energy Plaza Thermal Energy Storage charge/discharge schedule 24,000 21,000 Chillers Production Tank Charge Tank Discharge Loop Load 18,000 15,000 12,000 9,000 6,000 3, ,000-6,000-9,000 0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 9
10 12:00 AM 1:00 AM 2:00 AM 3:00 AM 4:00 AM 5:00 AM 6:00 AM 7:00 AM 8:00 AM 9:00 AM 10:00 AM 11:00 AM 12:00 PM 1:00 PM 2:00 PM 3:00 PM 4:00 PM 5:00 PM 6:00 PM 7:00 PM 8:00 PM 9:00 PM 10:00 PM 11:00 PM 12:00 AM Kilowatts Degrees Fahrenheit Sustainable Communities Conference, March 2009 Energy Plaza Thermal Energy Storage system performance Energy Plaza Load Profile 25,000 20, ,161 kwh Consumed 100 F 20,477 kw ,000 10,000 5,000 0 kw Demand 77 F Outside Air Temperature 85% Reduction in On-Peak Demand 3,094 kw Saturday, June 10,
11 kw Sustainable Communities Conference, March 2009 Energy Plaza Thermal Energy Storage system performance 24,000 21,000 Summer Operation Winter Operation 18,000 15,000 12,000 9,000 6,000 3, Hour of Day 11
12 12
13 Boiler Emissions Reductions District energy plant boilers were replaced with smaller, medium pressure boilers using ultra-low NOx burner technology. 70 Nitrogen Oxides (tons/year) Central Utility Plant Boilers '96 '97 '98 '99 '00 '01 '02 '03 '04 '05 13
14 Continuous Commissioning Program in Terminal D & Energy Plaza A process developed at Texas A&M University s Energy Systems Laboratory (ESL) that: optimizes energy use based actual building conditions and requirements Routinely achieves 10 25% whole building energy cost reductions CC measures employed at Energy Plaza Fine-tune boiler steam pressure set point Optimize glycol system hot water pumping control Implement ChW supply temperature reset schedule Optimize chiller staging & TES tank control Optimize glycol temperature reset schedule including improved PCA system switch mode operation Improve CW pumping control Optimize ChW secondary system control Improve cooling tower fan staging control 14
15 Steam Pressure Reset 15
16 Continuous Commissioning Program in Terminal D & Energy Plaza Phase I (FY 08) complete Phase II (FY 09) on schedule Terminal D Electricity consumption decreased by 5% (2.4MWh) Chilled water consumption decreased by 16.37% (32,221 MMBtu) Hot water consumption decreased by 8.99% (5,576 MMBtu). Energy Plaza Electricity consumption decreased by 9% (5.657MWh) Natural gas consumption decreased by 24% (31,420 MMBtu) Peak electrical demand decreased by 3MW Total project savings $1,101,428 (FY 08), exceeds forecast by 120% 16
17 MMBtu / Square Foot Sustainable Communities Conference, March 2009 Passenger Terminal Energy Utilization Terminal MMBtu/SqFt Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Terminal A '08 Terminal B '08 Terminal C '08 Terminal D '08 Terminal E '08 17
18 Oct-04 Dec-04 Feb-05 Apr-05 Jun-05 Aug-05 Oct-05 Dec-05 Feb-06 Apr-06 Jun-06 Aug-06 Oct-06 Dec-06 Feb-07 Apr-07 Jun-07 Aug-07 Oct-07 Dec-07 Feb-08 Apr-08 Jun-08 Aug-08 Oct-08 Sustainable Communities Conference, March 2009 Continuous Commissioning Program Results $1,800,000 $1,600,000 $1,400,000 $1,200,000 $1,000,000 $800,000 $600,000 $400,000 $200,000 $0 Accumulative Savings All Airport CC Projects Performed To Date $1,663,307 RAC Admin Term D EP Savings determined in accordance with the International Measurement & Verification Protocol 18
19 Green Industry Leadership DFW s environmental success recently earned the Airport s participation in EPA s National Environmental Performance Track Program, and TCEQ s Clean Texas Platinum Award. Recognizes top businesses and organizations that excel at environmental leadership and performance Note: Federal Aviation Administration has unilateral jurisdictional authority over Airports and additional requirements 19
20 Thank you for your kind attention Sustainable Communities Conference, March 2009 Rusty T. Hodapp, P.E., CEM, LEED AP Vice President, Sustainability Officer Dallas/Fort Worth International Airport Board 20
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