大空間多股送風射流重合特性的理論與實驗研究.pdf

1、同濟大學碩士學位論文大空間多股送風射流重合特性的理論與實驗研究姓名：趙菊申請學位級別：碩士專業(yè)：供熱、供燃氣、通風及空調(diào)工程指導教師：朱士蕓肖勇全2000.3.1AbstractTheoccupiedzoneairconditioning，inwhichairdistributionisprovidedbymulti—outletiets，hasbeenadoptedinmostofthelargespacesinordertomeet

2、therequirementofenergyconservationanddesignThereisoverlappingphenomenabetweenmulti—streamietswhichdiffersfromsingle—steamjetAccordingtothetypeofconstructions，outletsmaybearrangedinthefonnoflineorplaneInthispaper，theflowi

3、nglawofparallelmulti—streamjetwasthoroughlydiscussedInthispapermathematicalmodelofoverlappingcorrectioncoefficientofvelocity(temperature)K。(Kf)wasestablishedonthebasisofflowinglawofthefreesingle—steamjetTheoverlappingcoe

4、fficientofparalleljetsof2～15outletswascalculatedThechanginglawofK。(Kf)andtheinfluencefactorsonitwereobtainedthroughanalysisThestudyresultsrevealed：outletvelocitytemperaturedifference，thediameterofoutletandtherangeofjetar

5、ethemainfactorstoaffecttheoverlappingcharacteristicsofjetsHowever，whenthenumberofoutletssurpasstwelve，themaininfluencefactorsaretherangeofjetmadthedistancebetweenoutletsInthispaper，accordingtothechanginglawofK。(Kt)，class

6、ificationandcollectionofoverlappingcoefficientof2～15outletswasmadeandgivenintheformofchartanddiagramforemployingToverifythereasonabilityoftheoreticalresults，theexperimenttableofparallelmulti—outletjetswasbuilttotestifyan

7、danalyzetheoverlappingcharacteristicsofthejetsofthree，six，nine，twelve，andfifteenoutletsTheexperimentalresultsindicate：analyticalvalueiscorrectComparingwiththeavailablestudyresults，theoverlappingcharacteristicsofparallelm