大温差小流量系统 特灵空调

1EarthwiseTMSystem大温差小流量-高效.节能.环保SeriesArrangement串联布置2TheTitanicStory泰坦尼克FirstCost(1year)MaintenanceCostsEnergyCostsCO2Taxes?(19years)3冷冻机chiller冷却塔coolingtower水泵pump冷冻水系统能耗EnergyConsumption1970’s2000’s73%9%18%58%26%16%41999年1月HPAC杂志DavidW.Kelly5简单的物理公式PhysicalformulaQ=mcpDT水泵主机冷量不变6CoolingCoilPerformanceACTan传统温差大温差TMBH(KW)476.5(139)475.6(139)EWT(Supplytemp)44F(6.6oC)41F(5oC)WTR(tempdif)10F(5.5oC)15.1(8.4oC)GPM(flow)95.3(6L/s)63.0(4L/s)TypicalExample扰流盘管7盘管扰流:StainlessSteelSS304CopperTubeTurbulatorTurbulator8传统温差大温差流量2400gpm(151L/s)1600gpm(101L/s)扬程110feet(33.5M)49/110feet(14.5/33.5M)泵效率80%80%马达效率95%95%泵功率65kW19/42kw冷冻水泵TypicalExample(1000ton)9大温差2000gpm(126L/s)32/60feet(9.7/18.2M)80%95%16/28kW传统温差流量3000gpm(189L/s)扬程60feet(18.2M)泵效率80%马达效率95%泵功率45kW冷却水泵TypicalExample(1000ton)10传统温差冷冻水供44oF(6.6oC)主机能耗580kW大温差41oF(5oC)613kW主机TypicalExample(1000ton)11传统温差95/85/78(35/29.4/25.5)3000gpm(189L/s)10oF(5.6C)range7oF(3.9C)approach60hp48kW冷却塔TypicalExample(1000ton)大温差100/85/78(37.7/29.4/25.5)2000gpm(120L/s)15oF(8.3C)range7oF(3.9C)approach40hp32kW12主机580冷冻水泵65冷却水泵45冷却塔48共计738传统温差61319/4216/2832680/715大温差+33kW-46/-23kW-29/-17kW-16-58/-23kW(-8%/-3%)节能水侧能耗ChW&CWTypicalExample(1000ton)13主机+10k冷冻水泵-6k冷却水泵-6k冷却塔-10k管路，阀门及安装-20k共计-32kUSD投资比较ChW&CWTypicalExample(1000ton)，传统温差投资USD:640k。改设计为大温差后：初投资降低：5%ductwork–$piping,pumps–$初投资chillers+$+$controls?$airhandlers-$初投资运行费用大温差可应用在水侧，空气侧•小流量•大温差•高效–Enhancedcomfort提高舒适度–Enhancedacoustics降低噪音–EnvironmentallyFriendly环保–Spacereduced减少空间15LowFlow/Temp.System水侧比较WatersideBYPASSVALVE16LowFlow/Temp.System水侧比较WatersideBYPASSVALVE17Case:CICB－中保大厦18LowFlow/Temp.SystemCase:CICB－中保大厦EnergyConsumptionComparisonZB-conventionalkWhconsumpedZB-EWSenergyconsumped(kWh)%diff.May518,916487,1376.12%Jun549,929515,5846.25%Jul557,827518,5967.03%Aug653,614606,4687.21%Sep515,335482,1286.44%Oct486,127445,531MonthlyAverage546,958509,2416.90%AnnualTotal3,281,7483,055,4446.90%Saving158,413Rmb19LowFlow/Temp.SystemCase:CICB－中保大厦EnergyConsumptionComparison400,000450,000500,000550,000600,000650,000700,000MayJunJulAugSepOctMonthofayearEnergyConsumption(kWh)ZB-BASE-1kWhconsumpedZB-EWS-1energyconsumped(kWh)20每生产1kWh电相当于向大气释放:Generating1kWhofElectricityisequivalenttoreleasingintheatmosphere:680克,1.5磅Lb.ofCO24.5克GramsofSO22.5克GramsofNOxCase:CICB－中保大厦21选用大温差所降低的能耗相当于=多种200,000棵树Planting200,000Trees减少900辆汽车Removing900carsCase:CICB－中保大厦ByInvestinginanmoreefficientEWSsystem22SydneySuperDome悉尼2000年奥运会主馆EarthwiseCaseStudy23EarthwiseTMSystem大温差小流量-高效.节能.环保SeriesArrangement串联布置245.5oC38oC32oC12oC下游机1850tonvs0.598kw/ton上游机2150tonvs0.608kw/ton34.8oC8.51oCchillerdownstreamdaymodeUp21500.6081307.2Dn18500.5981106.3Total40002413.5kw/ton0.6033750.603375kw/ton上游机下游机BostonConvention&ExhibitionCenter波士顿会展中心September30,200426BCECCoolingPlant•六台电制冷56OF-40OF(13.3-4.4OC)–(2)3000TonSeriesCounterflowModules–(2)400TonDoubleBundleChillers•二次泵系统•机房能耗kw/TR–0.78kw/TRDesign–0.59kw/TRIPLV17万平方米空调面积6800冷吨冷冻27SeriesCounterflowChillers3000TRModuleChillerTowerFans&PumpsCHWPumpsTotal主机冷却塔与冷却水泵冷冻水泵总计SeriesCounterflow0.633kw/TRDesign0.056kw/TR0.075kw/TR0.76kw/TR90o-110oF(32.2-43.3oC)0.484kw/TRNPLV0.056kw/TR0.075kw/TR0.615kw/TRParallel0.769kw/TRDesign0.056kw/TR0.075kw/TR0.90kw/TR90o-110oF(32.2-43.3oC)0.608kw/TRNPLV0.056kw/TR0.075kw/TR0.740kw/TRConventional85o-95oF(29.4-35oC)0.579kw/TRDesign0.12kw/TR0.075kw/TR0.77kw/TRParallel0.485kw/TRNPLV0.12kw/TR0.075kw/TR0.68kw/TR28波士顿会展中心MethodstoReduceTowerSize减小冷却塔1ReduceflowRate-IncreaseRange增加冷却塔的温差-6,800TR10OF(5.6oC)Range85O-95O19,000GPM30”Pipe775HP-6,800TR15OF(11.1oC)Range85O-100O12,750GPM24”Pipe530HP-6,800TR20OF(11.1oC)Range85O-105O9,600GPM20”Pipe400HP•PumpPowerreductions•FanPowerReductions•LineSizeReductions2IncreaseTowerApproach增加冷却塔的逼近度，供水温度与湿球温度差-78OF(25.6oC)Wb85O-100O(29.4-37.8oC)2500Sq.Ft.@225HP85O-78O=7OF(3.8oC)Approach-78OF(25.6oC)Wb90O-110O(32.2-43.3oC)1800Sq.Ft.@150HP90O-78O=12OF(6.6oC)Approach29Conclusion•Seriescounterflowchillerslowflowhighapproachtoweradvantageous顺流逆流串联配置主机，大温差冷却塔•Lowfirstcostlowenergy减低机房投资与运行费•Everyapplicationisdifferent每一单都不同•Don’tbea“VictimofInertia”不做习惯的牺牲品初投资运行费用30谢谢大家Thankyou