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<br />EXHIBIT D <br />FACILITY OPERATING PARAMETERS & <br />UTILITY SAVINGS CALCULATION METHODS <br /> <br />BLDG # - 1 <br />Monthly Sav <br /> <br />Building Envelope Solutions Calculations. <br />Customer City of Elk River <br /> <br /> <br />Wind Speeds averaged <br />Public Works Building <br />Revision B <br /> <br />Wind Pressure Factor C <br />19000 Proctor Rd. NW <br />price <br /> <br /> <br /> <br /> <br />AIR LEAKAGE: <br />Feet <br />Gap Sq. Ft. <br /> <br />Ext. Door(s) to have only the sweeps 60 1/32 0.16 sq ft <br /> <br /> <br />Ext. Door(s) to be weather-stripped 80 1/32 <br />0.21 sq ft <br /> <br /> <br />Over-head Door(s) to be sealed on 448 3/32 <br />3.50 sq ft <br /> <br /> <br />Int. Door(s) to have only the sweeps 60 3/32 <br />0.47 sq ft <br /> <br /> <br />Int. Door(s) to be weather-stripped & 100 1/16 <br />0.52 sq ft <br /> <br /> <br />Ext. Door(s) to be weather-stripped 160 1/16 <br />0.83 sq ft <br /> <br /> <br /> <br />Ext. Door(s) to be weather-stripped 20 1/16 <br />0.10 sq ft <br /> <br /> <br />Over-head Door(s) to be sealed on 616 1/8 <br />6.42 sq ft <br /> <br /> <br />Int. Door(s) to be weather-stripped & 120 3/32 <br />0.94 sq ft <br /> <br /> <br />Int. Door(s) to be weather-stripped & 60 3/32 <br />0.47 sq ft <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Total <br />13.61 sq ft <br />sq meter <br />Density of Air (lbm/ft^3 <br />1.26 <br /> <br /> <br /> <br /> <br /> <br />Values, Constants, Assumptions. <br /> <br />Electrical rates $0.080 per kwh 0% % of building using electric heat or heat pump <br /> <br /> <br />Natural Gas Rate $0.800 per therm 100% % of building using Natural Gas <br /> <br />Propane Fuel Rate $0.000 per therm 0% % of building using Propane <br /> <br /> <br />Fuel Oil Rates $0.000 per therm 0% % of building using Fuel Oil <br /> <br /> <br /> <br /> <br />Building K 130 <br />K is a factor determining building style, ranging from 100 to 150. <br /> <br /> <br /> Total HDD ( F ) Low K is very efficient with central mass, high K is open ware house or <br />8,196.3 <br /> <br />many wings. <br />Total CDD ( C ) 1,380.6 <br /> <br /> <br /> <br />Elec Heat COP 1.0 <br /> <br /> <br />% of building cooled <br />40% <br /> <br /> <br />% <br />% mechanical EFF. <br />80% <br />This factor i s the anticipated variation of a mechanical efficiently of 80 <br />Cooling COP 2.50 <br />Coefficient of Performance for Air Conditioning or Geo-Thermal. <br /> <br />Calculations <br /> <br />Non-Electric Heat Loss = ( (Bldg Leakage sq mtrs) x (bldg k factor) x (Wind P Factor) x (HDD) x (9/5) x 0.075 x .243 x 60 x 24 ) / (100,000 <br />Electrical Heating Loss = ((Bldg Leakage sq mtrs) x (bldg k factor) x (Wind P Factor) x (HDD) x (.075 x .243 x 60 x 24) x (conversion to k <br />Cooling Loss = ((Bldg Leakage sq mtrs) x (bldg k factor) x (Wind P Factor) x (CDD) x (.075 x .243 x 60 x 24) x (conversion to kwh) <br /> <br />Annual Cost of Leakage: 5754.2 Therms <br /> <br />Kw h <br />Annual Cost of Leakage: 3151.3 <br /> <br />EXHIBIT D Page 7 of 27 <br /> <br />