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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(guò)程中的傳質(zhì)與傳熱過(guò)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(guò)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(guò)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(guò)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(guò)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
