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1、本科生畢業(yè)論文本科畢業(yè)論文（20屆）海水淡化過程中的傳質(zhì)與傳熱過程分析專業(yè)：化學(xué)工程與工藝19本科生畢業(yè)論文摘要實(shí)驗(yàn)研究了氣液兩相高速旋轉(zhuǎn)流傳質(zhì)與傳熱特性，通過實(shí)驗(yàn)對(duì)比了光滑圓管與螺紋管對(duì)氣液兩相高速旋轉(zhuǎn)流傳質(zhì)與傳熱過程的主要差異。實(shí)驗(yàn)結(jié)果表明，在高速旋轉(zhuǎn)的氣液兩相流中，傳質(zhì)與傳熱過程都顯著傾向于熱流或低密度流由圓管的外緣向中心快速運(yùn)動(dòng)，而高密度流則與之運(yùn)動(dòng)方向相反。在光滑圓管中，二氧化碳?xì)怏w的運(yùn)動(dòng)存在兩個(gè)分量，即圓周運(yùn)動(dòng)和軸向運(yùn)動(dòng)。在運(yùn)動(dòng)過程中，圓周運(yùn)動(dòng)速率逐漸減弱，軸向運(yùn)動(dòng)速率逐漸增強(qiáng)，導(dǎo)致傳質(zhì)與傳熱速率逐漸降低。在螺紋管中，螺紋的存在顯著限制了氣體的軸向運(yùn)動(dòng)，因此，顯著提高了傳質(zhì)與
2、傳熱速率。在氣液兩相旋轉(zhuǎn)流中，由于二氧化碳鋼瓶氣的流速比海水的流速高出2個(gè)數(shù)量級(jí)，導(dǎo)致二者超重力場(chǎng)強(qiáng)度相差2-4個(gè)量級(jí)，再加上海水粘度比二氧化碳?xì)怏w粘度高出3量級(jí)，因此，氣液兩相流中的傳熱與傳質(zhì)阻力集中在液膜中。在海水液膜中，流體微團(tuán)的運(yùn)動(dòng)方式對(duì)液膜傳質(zhì)與傳熱存在顯著影響，應(yīng)該是今后研究的重點(diǎn)。[關(guān)鍵詞]：氣液兩相旋轉(zhuǎn)流；傳熱；傳質(zhì)19本科生畢業(yè)論文Seawaterdesalinationprocessofmassandheattransferprocessanalysis[Abstract]:Thispaperintroducestheprocessofdesalinationhydr
3、othermalformedbetweenco2andseawaterfilmheattransferandmasstransfer.CurrentlytheworldandChinaarefacedwiththeproblems,theenergyshortageexploitMarineheatlowgraderenewableenergyistooptimizetheenergystructure,relievetheenergyshortageandkeepsustainabledevelopmentinaneffectiveway.Thedevelopmentandutiliz
4、ationoflow-endtasteheatneedefficientheatexchangetechnologyanddevice,packedtowerthecarbondioxideandwaterindirectcontactheattransferisakindofefficientandcanbeusedasawayofheattransferofenergydevelopmentandutilizationoflow-endtastethetechnologyeffectively.Undertheleadershipoftutortoestablishedasetofe
5、ffectiveandreasonablestructureofcarbondioxide-seawaterdirectcontactheattransferequipment,andapackedtowercarbondioxideandseawaterindirectcontactwiththeexperimentalresearch,heattransferprocesstomaketheidealtemperatureandheattransfercoefficientofheattransfervolumeandfoundoperatingconditionsofvolumef
6、actorssuchasheattransfercoefficientoftheinfluenceofexperimentalequipmentandscheme,thestudyonthedesigndevelopmentandutilizationoflow-end(salt)heatwaterprovidedaneffectivewayforcarbondioxide-wateranddirectcontactheattransferprocessandequipmentresearchanddesignapplicationtoprovidecertainguidanceandr
7、eference.Developedlow-endtasteheatandqualitativenewproducts,areurgentneedtoaddressthetopicofscienceandtechnology,hasbecometheinternationalheattransferresearchfrontresearchhottopicproblem.[Keyword]：Gas-liquidtwophaserot
