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ȼϵطʵ

                              ȼϵطʵ
                             飬꣬죬ȣר
                 (ͬôѧѧԺԴģϺ201804)
    ժҪݻFLUENTͨûԶ庯(UDF)оSO2ԼԹѧѧԽ˷;õSO2͸ʵǺϽϺãģܿɿԤоʹڴ˻϶ԹṹиĽͨڻѧоӵɸ֡·󣬴Ӷоܺʹ
    ؼ:ȼϵ;;;FLUENT
    ǰ
    ҵķչԴΣͻȾӾ硣ΪЩ⣬뿪ԴڸԴУȼϵ(FCV)Թ¶ȵ͡תЧʸߺͻѺõͻԽԣΪ͸˾оȵ1ݡ
    ӽĤȼϵ(PEMFC)ΪFCVÿΪ˳пȼϵط(FCE)ЧʺҪӰ졣ȾȼϵصӰøӽȡек(SO2)PEMFC߻жãӰܺо500mA/cm2ĵܶȷŵ磬SO2Ũȴ0.05106(3.2mg/m3)ʱܻܵɺԵӰ2ݡ
    ĿǰͨʹַкȼϵܵӰ졣һǿµĴ߻ǿ߻Ŀ;һڿȼϵ֮ǰекȥȻк෱࣬һֿԵֿк߻н϶Ҫˡʹÿڿ֮ǰкӿйȥһּ򵥶֮Чİ취
    ĿǰԳȼϵطо١ף3ϸȼϵؿṹķΪȼϵؿҪӦÿǽԡооϵ͹ѹء
    ԻѧȾ̿һֱȽϺõϡף4ͨ̿ڲͬŨȵKOHԻ̿лѧԣ:Լļԣ˻̿SO2ܡ
    ȼϵؿоҪнСѹף5иѹٶȵݼóϵ1/͹ϵC2FLUENT׽ģУóͨѹԣʵFLUENTһ£ΪȼϵؿṹṩҪķݡ
    ף6FLUENTMATLABԶ׽±߻ȼշӦģ⣬о״ֱΪ״״ı߻IJͬ¶ȵض˵Ӱ졣FLUENTMATLABȽǺϣԹ̶ӦƾҪָ塣
    ӦFLUENTFCEоĻѧԽзоͨʵָ֤ƿFCEʹ
    1ģ
    1.1ģ
    ҪFCEѧԡѹʧоѧԽз档Auto-CADļ㼸ģͼ1ʾṹо:оΪֽʻ޷IJȥеĿȾ;оΪKOHԵĻ̿ȥеĻѧȾSO2ߴ͸ʱSO2Ũȴ0ʱΪʧЧ
            
    1.2ģͼ
    (1)ӦΪ壬ڿлϾ;
    (2)ӦΪѹ;
    (3)оΪͬԵľ׽;
    (4)оѧӦΪӦ;
    (5)񻮷ֺÿ̿СԪSO2ʵͷõ;(6)ʵоKOHԺĻ̿ѧSO2Ũ(30%)ԶŨ(1%)7ݣ˽о׽ʻѧӦģ⣬ǿSO2ʱı
    1.3ѧģ
    1.3.1
    ڽΪѹ̿غ㷽̡ŵƽN-S̡ĶܦʺĶܺɢʦŵ˷̵ȻƷ
    غ㷽Ϊ
            
    ʽ:uiΪiٶȷ;fiΪi;pΪѹ;Ϊܶ;Ϊ˶ϵ;tΪϵϵʹLaunderSpaldingƼֵ
    1.3.2ַ
             
    ʽ:ߵ1Ϊ̬2Ϊ;ұߵ1Ϊɢ2ΪɢԴУCkDšSkֱʾŨȡЧɢϵ϶ʺԴ±kΪִ롣
    1.3.3ѧӦʷ
    K=K0 exp(Ea/RgT)(6)
    ʽ:KΪӦʳ;K0Ϊָǰ(Ƶ);EΪʵ;RgΪ峣;TΪ¶ȡ
    1.3.4Լ
    ͨûԶ庯(UDF)дԼ̣ÿСԪ(cell)ﵽͺٷѧӦ
    mcSO2qcmc(7)ʽ:mcSO2ΪÿСԪSO2;qcΪоĵλ;mcΪСԪ
    1.3.5-ѧģ
    вʵͼģϵķƽͽԵĹϵͨϣ򷽳ʵݵó͸ʱ봲ѻȵĹϵȻWheelerʽóͬµĴ͸ʱ䣬Langmuir¹ʽƽ--ʼŨȵάģͣ8ݡͨͼ2ʾάģͿԼһSO2ʼŨȺͿΧڵƽΪдUDFԼ̵ݣFLU-ENT㡣
             
    1.4ģҪߴͱ߽
    ΪСԿʵ򻯣ֻо׽ʷӦз档ı߽οʵݣ1ʾ
             
    2
    2.1
    ͼ3ͼ4ֱڹڴͨʼŨΪ1010650106SO2ķ洩͸ߡͼпԿSO2ʼŨΪ10106ʱĴ͸ʱΪ318h;ʼŨΪ50106ʱĴ͸ʱΪ64h
            
    Ϊ֤ģԤ׼ȷԣʵ鷽Ըģͽ֤ΪڵŨʱʧЧʱϳǵʵIJԣʵΪ2׶Ρ
    1׶οǰSO2ŨΪ10106ٶΪ0.4m/s˹̳70hδʧЧ;2׶νڿSO2ŨȵΪ50106ٶΪ0.4m/sֱʧЧҲ׶νУʵȫͬͼ5ΪʵͷÿоSO2ƵĴ͸ߡͼɼʵڵ2׶:ʵ龭52hʧЧ;澭50hʧЧ
            
    2ʵͷõĴ͸ʱʹ͸ƽ͸ʱϣʵΪ1.6%;о͸ƽΪ3.1%ʵͷݻ֤UDFࡣ
           
    дԼģFLUENTĿɿԡ
    2.2ṹ
    2.2.1ѹķֲ
    ͼ6ͼ7ֱΪٺѹֲͼֵԼΪ2.67m/sШεĽṹڿ̿׽ֲľԡѹʧΪ811PaFCEҪ
            
    2.2.2 SO2Ũȷֲ
    ͼ8ΪFLUENTÿоʼSO2͹вͬʱ̵SO2ŨȷֲͼŴSO2овSO2Դ࣬120hڴSO2ʧЧ̿оڴﵽʱֲˡ·˻̿ṹҪĽ

    2.3ṹĸĽ
    ΪоЧʽõ壬ͼ9ʾõǿȿǰ
            
    ͼ10ΪṹĽĿSO2ķ洩͸ߡͬǰڹͨ10106SO2 70hٽSO2ŨȵΪ5010673hʧЧ(ܵʱΪ143h)óо͸ƽԼΪ44.84mg/gоṹĽǰ40.1%
    ͼ11ΪԽṹĽĿзõоӽʱSO2Ũȷֲͼͼɼõʹ̿оڴﵽʱSO2ŨȷֲΪȣͬʱ̿ʴߣԼСʹߡ
                          
    3
    ͨUDFдԼ̣ӦFLUENTȼϵؿѧͻѧܽзоͨʵ֤;ΣͨķģͣԿнṹŻ:
    (1)ʵԽϽϺãķģͿɿڿĽṹ;
    (2)赼ĿЧԣʹ
ο
1ëǿȼϵأMݣ:ѧҵ磬2005
2ȾӽĤȼϵӰоDݣϺ:ѧԴ뻷ѧԺ2006
3Daniel M KennedyDonald R CahelaWenhua H Zhuet alFu-el 
Cell Cathode Air Filters:Methodologies for Design and Optimi-zation
JݣJournal of Power Sources2007168(1):391399
4Ma X WYang D JZhou Wet alEvaluation of Activated Car-bon
 Adsorbent for Fuel Cell Cathode Air FiltrationJݣJournal of 
Power Sources2008175(1):383389
5ݳר飬ΰFCEѹоJݣ棬200926(5):296298
6Kolaczkowski S TChao RAwdry SApplication of a CFD Code
(Fluent)to Formulate Models of Catalytic Gas Phase Reactions inPorous
 Catalyst PelletsJݣChemical Engineering Research andDesign200785(11):15391552
7ΰȼϵؿоDݣϺ:ͬôѧ2007
8ȣȼϵؿϻѧΪģDݣϺ:ͬôѧ2010
9ݳרȼϵطͷоDݣϺ:ͬôѧ2009


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