新型相變材料蓄放熱特性的數(shù)值計算與實驗研究.pdf

1、天津商業(yè)大學(xué)碩士學(xué)位論文新型相變材料蓄放熱特性的數(shù)值計算與實驗研究姓名：于靜申請學(xué)位級別：碩士專業(yè)：制冷及低溫工程指導(dǎo)教師：鄒同華20080501ABSTRACTWiththefurtherrealizationoftheimportanceoftheenergy，theresearchonthermalstoragetechniqueappearstobemoreandmorevaluableThephase—changetherma

2、lstoragehaslargerheatstoreddensityandhigherthermalefficiencyComparedwiththeotherthermalstoredways，itismorecompactandeasiertobecontrolledandtomatchwiththeoperatingsystem，SOthephasechangethermalstoragegraduallybecomesapref

3、erredheatstoredtechniqueandhasawidelyappliedprospectThereforeitisnecessarytodoaresearchonthephase—changematerialsandphasechangethermaltransferAnewphase—changematerialSXRSisadaptedinthepaperThepurposeofthispaperistostudyt

4、heheatstoredandreleasedcharacteristicofthenewphasechangematerialbynumericalsimulationandexperimentFirstlythemathematicalandphysicalmodelofthephasechangeproblemispresentedinthepaperTheone—dimensional，nonsteadystateandliqu

5、id—solidphasemathematicalmodelwithoutnaturalconvectionisfirstlyestablishedThenthevariationrelationofthephase—changematerialtemperatureandwatertemperatureisobtainedbyfinitedifferencemethodSecondlytheheatstoredandreleasedc

6、haracteristicofheatstoragelabisdevelopedCharacteristicandlawofaccumulationandliberationofheatonthephasechangematerialSXRSisexperimentallystudiedinthispaperItisalsesearchedthattheeffectofvelocityandtemperatureofwateronacc

7、umulationandliberationofheatTheimportanceofeachfactorisconfirmedanddesignprojectisoptimizedFinallythereliabilityofmathematicalandphysicalmodelisvalidatedbycomparisonofnumericalsimulationandexperimentalresearchItcanbeseen

8、fromthecomparisonthatthetheoreticalresultsisrelativelyagreementwinlexperimentalonesItoffersreferencefoundationforthermalstorageequipmentusedinprojectsKeywords：Phase—changeMaterial，HeatStored，HeatReleased，NumericalCalcula