Energy Efficiency in Air Compressors.pdf

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1、EnergyEfficiencyinAirCompressorsInNorthCarolinaCommunitiesCompressedairisaversatiletoolusedwidelythroughoutindustryforavarietyofpurposes.Unfortunately,runningaircompressors(AC)oftenusesmoreenergythananyotherequipment.Aircompressorefficiencyistheratioofenergyinputtoenergyoutput.Manya

2、ircompressorsmayberunningatefficienciesaslowas10percent.ImprovingACefficiencycanyieldsignificantsavingstoyourfacility.Whentalkingabouttheefficiencyofaircompressors,itisimportanttorememberthatthecompressoritselfisonlyonepartofthesystem;therefore,itisimportanttolookatthewholesystemwhe

3、ndiscussingACefficiency.Compressedairistheproductofasystemcomprisedoftheaircompressorfollowedbyafter-coolers,receivers,airdryers,airstoragetanks,supplylinesandpossiblysequencersandmultiplecompressorunits.Thetotalenergyuseofacompressorsystemdependsonseveralfactors.Theaircompressortyp

4、e,modelandsizeareimportantfactorsinthecompressor’senergyconsumption,butthemotorpowerrating,controlmechanisms,systemdesign,usesandmaintenancearealsofundamentalindeterminingtheenergyconsumptionofacompressedairsystem.ControlMechanismsMatchthecontrols.Systemcontrolsareoneofthemostimport

5、antelementsofacompressedairsystem,andarealsoacentralfactorinaircompressorsystemefficiency.Controlsaredesignedtomatchthecompressoroutputwiththesystemdemand.Controlsmaymanageasingleaircompressor,orinvolvetheorchestrationofmultipleaircompressorstosatisfysystemneeds.Severaltypesofsystem

6、controlsexistthatmayhelptoincreasetheefficiencyofyoursystem.SingleUnitControls§Start/stop–turnscompressorsonandoffaccordingtodischargepressure.§Load/unload–leavesmotorrunningcontinuously,butunloadscompressoraccordingtodischargepressure.§Modulating–controlsinletvolumetosatisfyflownee

7、d.§Multistep–forcompressorsdesignedtooperateatmultiplepartiallyloadedconditions.N.C.DivisionofPollutionSystemControlsPreventionandEnvironmental§Sequencing–orchestratescompressorstomeetdemandbytakingcompressorsoff-line,Assistanceorstartingcompressorstomeettotalsystemload.(919)715-650

8、0(800)763-0136§Netw