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Home My WebLink About006Cr ILITY r$$6u gYSItus RECENVED APR 0 1 2ji3 ltrffi$0$lt0tltilY utr Pleasant Harbor Marina and Golf Resort Facts aboutGeothermal Heating and Cooling Sysfems . The U.S. Environmental Protection Agency has identified geothermal heat pumps as a technology that significanfly reduces greenhouse gas and other air emissions associated with heating, cooling and water heating residential buildings, while saving @nsumers money. Geothermal heat pump systems are the mostenergyefficient, environmentally clean, and cost- effective space conditioning syatems available, according to the EPA. Today there are now more than 1,000,000 geothermal installations in the United States. The cunent use of geothermal heat pump technology has resulted in the following emissions reductions: Elimination of more than 5.8 million metic tons of CO2 annuallyI These 1,000,000 installations have resulted in the following energy consumption reductions: Annual savings of neady 8 billion kWh Annual savings of nearly 40 trillion Btus of fossil fuels Reduced electricity demand by more than 2.6 million kW Geothermal systems represent a savings to homeowners of 30 lo 70o/o in the heating mode and 20 to 50% in the cooling mode compared to conventionalsystems. Geothermal systems use the earth's energy storage capability to heat and cool buildings and to provide hot water. The earth is a huge energy storage device that absorbs 47% of the sun's energy - more than 500 times the energy that mankind needs every year - in the form of clean, renewable energy. Geothermal systems take this heat during the heating season at an efficiency apprcaching or exceeding 400% and retum it during the cooling season. The U.S. GeneralAccounting Ofiice estimates that if geoexchange systems were installed nationwide, they could save several billion dollars annually in energy msts and substantially reduce pollution. Proposed Geotlrermal Systems at Pleasant H arbor Mart na and Golf Rsort Several geothermal technologies are proposed for the Pleasant Harbor development. The following lists these options: . District geothermal energy system using the recycled water storage ponds as a heat exchanger. Closed loop vertical borehole systems Distributed geothermal heat pumps located in each unit will provide forced air heating and cooling. Domestic hot water will be provided by de-superheaters on the heat pumps and supplemented by electric hot water tanks. a I September 26, 2008 Pleasant Habor Maina and Golf Resr,ft Page2 of4 The following diagrams illustate both geothermal options: Estimated Energy and Grcen House Gas Reducfions Each of these options would dramatically decrease the green house gas emissions and energy requirements for the development compared to conventional systems. The folloning summarizes the implications of implementing geothermal systems: Estimated Total Annual Electricity Used (kwh) Estimated GHG emission (Tons) Estimated Annual Utility Costs Conventional System 10,098,500 5,100 $1,019,950 Geothermal System 3,42,500 1,740 $347,690 Estimated Savinos 6,676,000 3,360 $672,260 Note:afe on According to the EPA's GHG Equivalencies Calculator, these reductions in green house gas emissions are equivalent to: Removing 558 vehicles ftom the road annually, or The annual energy use ftom 404 homes, or Carbon sequestered annually by 693 acres of forest Note: US EPA's GHG Equivalencies Calculator: hft p t/www. e p a. g ou/cl e a n e n e ry y/e n e rg y - re so u rce s/c a I c u I ato r. ht m I #200- 1O49 Cary Road, Kelowna, B.C. VlX2Cl Tel: (250) 762-5776 Fax: (250) 7624206 Email: info@eotility.ca Website: mw.geotility.ca Vedical Borefield /^l I T I d heatino and coolino loar Pond Heat Exchanger September 26, 2008 Pleasant Hahor Maina and Gdf Resnrrl Page3 of4 These reductions in COz emissions could also be integrated into a future carbon credit trading program for the development. Geothermal heating and cooling systems at the Pleasant Harbor Marina and Golf Resort are one approach towards creating a more sustainable, energy efficient and environmentally friendly development Methodology for Det*mining En*gy Loads and GHG Emissions Preliminary energy use calculations were performed by first evaluating the estimated peak heating and cooling loads for the entire development. Annual energy use was then determined using tabulated ASHRAE (American Society of Heating, Refrigeration and Air-Conditioning Engineers) data for equivalent full load hour calculations. The overall heating and cooling needs of the development were then determined. A baseline system of electric resistance heat and electric cooling was then evaluated and named the baseline or conventional system. Total electricrty use was calculated based on the overall heating and cooling needs. A geothermal system was then modeled in the same fashion and compared to the baseline electric system. Data obtained from both the US EPA and Puget Sound Energy was used to determine the actual tons of greenhouse gas emissions caused by electricity production. These values determined the overall GHG emissions related to the heating and moling of the resort development. The US EPA provides online resources that enable the user to @mpare GHG emissions of different sources, while also comparing tons of emissions to equivalent carbon emissions or ofEets (i.e. planting hees, car travel, average annual home energy use.) The results of the calculations are included in Appendix A. #200- 1O49 Cary Road, Kelowna, B.C. VlX2C1 Tel: (250) 762-5nG Fax (250) 7624206 Email: info@eotility.ca Website: mwv.geotility.ca September 26, 2008 Pleasant Hatbor Maina and Gdf Resoft Page 4 of4 Appendix A Energy Calculations and Green House Gas Calculations #2OO- 1O49 Cary Road, Kelowna, B.C. VlX2Cl Tel: (250) 762-5776 Fax: (250) 762{,mG Email: info@eotility.ca Website: wurw.geotility.ca I-II--I-IIIIIIIIIIT Pleasant Harbor Energy Use Calculations Estimated Heat Loss (btuh/ft2) Estimated Heating FLH Estimated Heat Gain (ft2/ton) Estimated Cooling FLH Electricity Rate (S/kWh) GHG Emissions (lbs/kwh) S t4 2050 1000 400 0.101 Geothermal Heating COP Geothermal Cooling EER Geothermal Cooling COP Conventional Cooling EER Conventional Cooling COP 3.5 16.0 4.7 72.O 3.52 1.01 Based on calculations defined by 2006 PSE fuel mix data provided by the WA State Department of Community, Trade & Economic Development Golf Course Resort Ft2 Heat Loss (kbtuh) Heat Gain (kbtuh) Estimated Annual Heating Energy (kwh) Estimated Annual Cooling Energy (kwh) Conventional Heating Costs Conventional Cooling Costs Geothermal Heating Costs Geothermal Cooling Costs Geothermal Heating Savings Geothermal Cooling Savings Terrace/ Conference Centre s9,000 826 708 496,255 82,997 5 so,t22 s 2,384 S 16,111 s L,788 s 34,011 s s96 Golf Course Mgmt Centre 33,200 455 398 279,249 46,704 S 28,204 s L,342 s 9,066 s 1,006 S 19.139 s 33s Black Pt Townhomes 615,700 8,620 7,388 5,774,720 866,t27 S s23,os1 s 24,880 s 158,123 s 18,660 S *q,gzt s 6,220 Black Pt Villas 202,600 2,836 2,437 t,704,o91 285,005 s 172.113 s I,t87 s ss.322 S 5,140 S 116.791 s 2,O47 Marina Marina Villas 76,000 L,064 912 639,244 LO6,972 S 64,s64 s 3,O7L S 20,7s3 S 2,301 s 43,811 s 768 Marina Townhouses 76,OOO 1.064 912 639,244 LO6,972 s 54,s54 s 3,071 s 20,7s3 s 2,303 s 43,811 s 768 Marina Stepped 31,300 438 376 263,268 44,O3L S 25,s90 s r,265 s 8,547 s 949 S 18,043 s 316 Marina Rowhouses 52.300 732 628 439,901 73,572 S 44,430 S 2,113 5 r4,28r s 1,585 s 30,149 S 528 Total 1,146,100 16,045 13,753 9,639,912 1,672,260 S 973,637 S ae,sr+s 312,9ss 5 34,73s S 660,682 S 11,578 fotal Conventional kWh Used 10,o98.525 rotal kwh saved 6,656,048 fons of CO2 Sav6d 3,361 fotal Conventlonal Costs 1.019.9S1 fotal Grothermal Costs 347.690 672.261