Portland International Jetport s

Transcription

1 In the Loop Forum Geothermal Energy in Maine s Homes & Businesses December 13, 2012 Portland International Jetport s Geothermal System Overview & Case Study by: Paul H. Bradbury, P.E. Airport Director 0

2 Presentation Outline PWM Informational Overview Terminal Expansion Project - Geothermal System Terminal Expansion Project Overview Geothermal System Information System Benefits Questions? 1

3 PWM Informational Overview Maine s largest airport by passenger volume 1,675,221 passengers CY 2011 Occupies 840 acres in the cities of Portland and South Portland Located approximately 3 miles west of downtown Portland Direct access to the Maine Turnpike The Jetport provides a total economic benefit of $868 million annually and supports 11,591 jobs (Direct $196 million, On-Airport $221 million, and visitors $450 million). 2

4 PWM Informational Overview PWM six airlines serving 13 non-stop destinations 3

5 Terminal Expansion Project Overview 137,000 square feet with 10,000 square feet of renovation to existing building 3 new gates for a total of 10 8 passenger screening lanes (initially 5 will open) New in-line Explosives Detection System (EDS) baggage handling system New terminal access roadway and replacement of surface parking lots Enclosed bridge connecting central parking to the terminal building Building is LEED Gold Certified an accomplishment achieved in part through the geothermal heating/cooling system 4

6 Terminal Expansion Project Overview Existing Terminal & Site 5

7 Terminal Expansion Project Overview Terminal Expansion & Site Plan 6

8 Terminal Expansion Project Overview Project Complete 7

9 Geothermal System Information PWM Geothermal System 10 underground S&R piping Terminal Bore field 1.4 acres Closed loop system 8

10 Geothermal System Information 90 F cool building 50 F Summer-cooling operation 9

11 Geothermal System Information 10 F F warm building 50 F Winter-heating operation 10

12 Geotherm al System I nform ation System is largest in Maine with 120 wells 500 feet deep and nearly 23 miles of high density polyethylene pipe. Wells are spaced 20 feet apart. Bore Field Layout 11

13 Geothermal System Information 12

14 Geothermal System Information Manifold Vault 13

15 Geothermal System Information 14

16 Geothermal System Information Low-temp / low energy radiant floor 15

17 Geothermal System Information Low-temp / low energy radiant floor 16

18 Geothermal System Information System uses a total of 8 stacked heat pumps (up to 7 for cooling and all 8 for heating) to provide 100% of the terminal s cooling requirements and 75% of the heating needs System provides a maximum heating capacity of 6.87 million BTUH (572.5 Tons) and a maximum cooling capacity of Tons. III MULTISTACK 17

19 Geothermal System Information VALE Grant funding Voluntary Airport Low Emission Program Administered through the FAA Airport Improvement Program (AIP) Portland Jetport received $2.59M grant Total cost $3.1M $1.1M wells & piping $1.5M mechanical equipment $0.5M project management & design 18

20 Geothermal System Benefits Estimated annual fuel savings 100,000 gallons of oil x $3.36 per gallon (today s price)* Minus net added electrical costs Net savings... $336,000 ($91,000) $245,000 Simple payback without VALE grant = 12.7 years Simple payback with VALE grant = 2.1 years * Current evaluation would have to be against natural gas which is roughly half the cost of oil 19

21 Geothermal System Benefits Actual equipment reductions Boiler capacity cut 52% Two cooling towers reduced to one Two chillers reduced to one 20

22 Geothermal System Benefits Estimated annual emissions reductions PWM geothermal project saves 1,000 tons of CO 2 emissions per year (1.02 tons of NO x ) 1 passenger car generates average of 5.5 tons of CO 2 per year* 1,000 tons 5.5 tons/car = equivalent of 181 cars off the road every year 181 *Metric tons: Environmental Protection Agency 420-F Feb

23 40 years =+7,200 cars!

24 Questions? 23

25 Haley & Aldrich, Inc.

26 Haley & Aldrich, Inc.

27 Haley & Aldrich, Inc.

28 Haley & Aldrich, Inc.

29 Put in good picture of mechanical room Haley & Aldrich, Inc.