Library Board Meeting Minutes - Lincoln City Libraries

Library Board Meeting Minutes Page 3June 14, 2005building. The existing boilers could remain to allow existing hydronic heating to remain and provide auxiliaryheat for the heat pumps. Existing chiller system will be completely removed along with the existing multizonesystem. The other system components and benefits will be the same as the California system but willhave additional energy savings by eliminating the cooling tower and boiler for normal heating and cooling.Also included in this modification is the addition of a new control system. Estimated Cost $350,000.All three systems could be installed without closing the library facility. All three systems utilize existing ductwork, building openings, and mechanical spaces resulting in no change to the building appearance.Although the conversion of the existing multi-zone system to VAV will have the lowest first cost, it utilizesthe existing condensing units and air handlers. The calculations also illustrate that the VAV system willhave the fastest life cycle payback of 3.2 years. The implementation of the VAV system is a temporarysolution approach. The VAV system utilizes existing equipment, which based on our experience will have areplacement cost of $150,000 between year 10 and 20. The VAV system will provide desired comfort andenergy savings for the immediate future, but the installation of this system is deferring replacement costs toan inevitable date in the next 10 to 20 years. Comparing the VAV system with the California Heat PumpSystem (Alternative 1 and Alternative 4) results in a 9.2 year life cycle payback for the California Heat PumpSystem. These results illustrate that the California Heat Pump System’s higher initial cost is offset by theVAV system due to the $150,000 replacement cost at year 10.The Ground Source Heat Pump System will have better energy performance than the California Heat PumpSystem, but the higher installation cost can not be effectively recovered in the life cycle analysis. Both heatpump systems will have similar reliability but the California heat pump system is $75,000 less first cost thanthe Ground Source Heat Pump System. The California Heat Pump system will have no impact on theexisting landscape as opposed to the Ground Source Heat Pump System.We recommend the implementation of the California Heat Pump System based on energy efficiency,reliability, ease of maintenance, comfort levels, and life cycle analysis.Economic SummaryAlternativeNumberInstalledCostFirst YearUtil.CostFinal YearUtil. CostFirst YearMaint. CostFinal YearMaint. CostLife CycleCost1 New VAV 182,500.00 21,727.44 31,652.77 9,491.46 13,827.26 930,573.302 Existing 60,000.00 61,352.83 89,379.48 10,066.70 14,665.28 1,520,697.653 Ground 350,000.00 21,321.71 31,061.71 8,628.60 12,570.24 880,920.05Source4 CaliforniaLoop275,000.00 20,341.96 29,634.39 9,491.46 13,827.26 803,847.90Economic Comparison of the AlternativesAlt. – Alt.First CostDifferenceSimplePaybackNet PresentValueLife CyclePaybackInternal Rate ofReturn1 - 2 122,500.00 3.0 yrs 590,124.35 3.2 yrs 34.7 %3 - 2 290,000.00 7.0 yrs 639,777.60 7.4 yrs 17.4 %4 - 2 215,000.00 5.2 yrs 716,849.75 5.4 yrs 23.0 %The full report is available for review in the Director’s Office. No action on the report was taken at this time.Elevator Car Door Replacement - Ms. Cupp reported three bids were received to replace the elevator cardoors on the courtyard elevator at Bennett Martin Public Library. Ms. Cupp moved to accept the bid ofO’Keefe Elevator Co. in the amount of $10,424. Second by Mr. Kirkpatrick. Roll Call Vote: Kirkpatrick,Langemach, Maly, O’Hanlon, Podany, Anderson, Cupp - aye. Motion carried.