谷物冷卻機的優(yōu)化設(shè)計.pdf

1、天津大學(xué)碩士學(xué)位論文谷物冷卻機的優(yōu)化設(shè)計姓名：陳金花申請學(xué)位級別：碩士專業(yè)：動力工程指導(dǎo)教師：李惟毅溫德伶20020601Thegrainchillerisakindofgreenequipmentforgrainstorageunderlowtemperature，whichCallsupplyconstanttemperatureandhumidityairforthegranarycontinuouslyandsteadilyIt

2、takesmuchelectricityPresentlygrainchillersintheworldareallinefficientSohowteducetheenergyconsumptionofgrainchillerhasbecomethekeytopopularizinggrainstoragetechnologyBasedonabovementioned，Optimizationdesignandresearchaime

3、datwholesystemofgrainchillershavebeenmadeinthispaperwhichcouldimprovetheperformanceofthegraingreatlyAccordingtoanalyzingthepresentstatusofgrainchillers，optimizationmethodsofsystemhasbeenproposedOptimizationresearchonthea

4、irsupplyandcontrolsystemofthechillerhasbeenmadetoensuresteadyairflowparametersandtoachieveautomaticcontrolbetterBasedontheanalysisofpresentandoperatingworkingstatusofevaporatormadeofseveralforeigncompanies，optimizationre

5、searchfortheconfigurationandthethermodynamiccalculationoftheevaporatorhavebeenmadeinthispaperOptimizedevaporatorofthechillercouldadapttoallkindsofworkingstatusandeffectofheatexchangeincreaseenormouslynenewanti—frostingde

6、viceaimedatevaporatorofgrainchillerhasbeendesigned，whichcouldimprovetheoperatingreliabilityofgrainchillerremarkablyWasteheatusedforwholedehumidifyprocessduringrefrigerationsystemcirculatingcouldsavemuchenergyandstabilize

7、airflowparametersConsideringourcountry’sclimate，optimizationdesignmadeforthecondensertobeusedundervariousconditionsCondensepressureCallberegulatedtomaintainreasonablevaluetosaveenergyTestingofoptimizedgrainchillerhavebee

8、nmadeattheNationalCompressorPerformance—TestingCenterTheresultsshowthattheairflowandcoolingcapacitypervolumeincrease48％and52％respectivelyafteroptimizingComparetothesameproductofforeigncompanythetwoparametersimprove92％and