輕型軟管流體元件公司歡迎來電上海邁頜信息科技供應-b2b網(wǎng)站_b2b電子商務平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="由于納米流體比基液具有導熱系數(shù)高、傳熱能力強的優(yōu)點，用納米流體取代傳統(tǒng)的核能系統(tǒng)冷卻劑，將有望提高冷卻劑與堆芯能量傳遞效率，降低冷卻劑流量，減小反應堆尺寸，對于提高核能系統(tǒng)的安全性與經(jīng)濟性有重要意義。為此，輕型軟管流體元件公司，麻省理工學院"><meta name="keywords" content="輕型軟管流體元件公司,流體"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>輕型軟管流體元件公司,流體</p><p><span>***更新：</span>2021-02-04 11:15:39</p><p><span id="click" >瀏覽次數(shù)：4次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="0yisvua" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海邁頜信息科技有限公司</a></p><p><span>聯(lián)系人：</span>王欽</p><p><span>郵箱: </span>834334323@qq.com</p><p><span>電話: </span>18917232386</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.maihetech.com</p><p><span>手機: </span>021-62086881</p><p><span>地址: </span>上海市松江區(qū)九亭鎮(zhèn)九亭中心路1158號21幢708室-2A</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="f5x4osd" class="page-proshow02"><p class="title">詳細說明</p><div id="ybitnel" class="box"><p><p style="text-indent:25px">由于納米流體比基液具有導熱系數(shù)高、傳熱能力強的優(yōu)點，用納米流體取代傳統(tǒng)的核能系統(tǒng)冷卻劑，將有望提高冷卻劑與堆芯能量傳遞效率，降低冷卻劑流量，減小反應堆尺寸，對于提高核能系統(tǒng)的安全性與經(jīng)濟性有重要意義。為此，輕型軟管流體元件公司，麻省理工學院(MIT)建立了一個多學科交叉的納米流體應用于核能系統(tǒng)的研究中心，以評估納米流體對核能系統(tǒng)安全性與經(jīng)濟性的影響.研究表明，輕型軟管流體元件公司，與水相比，添加0.01%~0.1%體積比的Al，Zn和Diamond形成的納米流體可強化臨界熱流密度40%~50%，輕型軟管流體元件公司，同時Al-水納米流體的穩(wěn)定性實驗表明，納米粒子可在伽馬輻射下穩(wěn)定懸浮。流體倘流速增加，越來越快，流體開始出波動性擺動，此情況稱之為過渡流。輕型軟管流體元件公司</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="輕型軟管流體元件公司,流體" src="https://tyunfile.71360.com/UploadFile/shanghaimaihe/637382847534921875/1583307.png"></div><p style="text-indent:25px">納米流體出眾的地方就是它的導熱性能。眾所皆知，常溫下固體材料的導熱系數(shù)要比流體大兩個數(shù)量級，因此在流體中加入固體顆粒會提高導熱系數(shù)。一般而言，懸浮的納米粒子主要包括金屬（如Cu，Al，Ag，Au，F(xiàn)e等）、氧化物（如Al2O3，CuO，SiO2，TiO2等）以及納米碳管、石墨烯等，基液的種類有水、乙二醇、油、甲苯、丙三醇、乙醇、氨水、R134a、R11、全氟三乙胺等。但要注意的是，如果懸浮液內(nèi)的顆粒容易團聚、沉降，無法形成長期穩(wěn)定的懸浮液系統(tǒng)，那在工業(yè)上是難以得到應用的。因此為了提高納米粒子的懸浮性能，還需要加入分散劑改變納米粒子與周圍基液、納米粒子與納米粒子之間的相互作用，達到較好的懸浮粒子分散效果。常用的分散劑主要有脂肪酸、PEO硫醇、山梨酸油等陽離子表面活性劑和烷基苯磺酸鹽、月桂酸鈉、?；撬猁}、磷酸鹽等陰離子表面活性劑。輕型軟管流體元件公司流體是液體和氣體的總稱。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="輕型軟管流體元件公司,流體" src="https://tyunfile.71360.com/UploadFile/shanghaimaihe/637382847473994141/8668307.png"></div><p style="text-indent:25px">流體性質(zhì)：質(zhì)量和密度流體和其他物質(zhì)一樣，具有質(zhì)量和重量。單位體積的流體所具有的質(zhì)量稱為流體的密度，用ρ來表示。在流體中任意點處的密度均相同，則該流體為均勻流體，均勻流體的密度表示為，ρ=m/v 。對于非均勻流體，因為各點處的密度不同，所以按下式計算的只是流體的平某一點處的密度應為：dm——所取某微元件的的質(zhì)量（kg） dV——質(zhì)量為dm的微元件的體積（m3）流體的比容指的是單位質(zhì)量的流體所占有的體積，用v表示。顯然，它與密度互為倒數(shù)。</p><p style="text-indent:25px">對于牛頓流體來說，在虹吸實驗時，如果將虹吸管提離液面，虹吸馬上就會停止。但對高分子液體，如聚異丁烯的汽油溶液和百分之一的POX水溶液，或聚醣在水中的輕微凝肢體系等，都很容易表演無管虹吸實驗。將管子慢慢地從容器撥起時，可以看到雖然管子己不再插在液體里，液體仍源源不斷地從杯中抽出，繼續(xù)流進管里。甚至更簡單些，連虹吸管都不要，將裝滿該液體的燒杯微傾，使液體流下，該過程一旦開始，就不會中止，直到杯中液體都流光。這種無管虹吸的特性，是合成纖維具備可紡性的基礎(chǔ)。液體可壓縮性很小，而氣體的可壓縮性較大。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="輕型軟管流體元件公司,流體" src="https://tyunfile.71360.com/UploadFile/shanghaimaihe/637382847566328125/174557.png"></div><p style="text-indent:25px">流體性質(zhì)：粘滯性當流體中發(fā)生了層與層之間的相對運動時，速度快的層對速度慢的層產(chǎn)生了一個拖動力使它加速，而速度慢的流體層對速度快的就有一個阻止它向前運動的阻力，拖動力和阻力是大小相等方向相反的一對力，分別作用在兩個緊挨著但速度不同的流體層上，這就是流體粘性的表現(xiàn)，稱為內(nèi)摩擦力或叫粘滯力。為了維持流體的運動就必須消耗能量來克服由于內(nèi)摩擦力產(chǎn)生的能量損失，這就是流體運動時會造成能量損失的原因。實際上，粘性是流體阻止發(fā)生剪切變形和角變形的一種特性。這是由于內(nèi)聚力的存在和流體層間的動量交換而造成的。內(nèi)摩擦力就是這種特性的表現(xiàn)形式。當流體處于靜止或各部分之間相對速度為零時，流體的粘性就表現(xiàn)不出來，內(nèi)摩擦阻力也就等于零。拉格朗日描述法：通過對各流體質(zhì)點的運動規(guī)律的觀察，確定整個流場的運動規(guī)律。山東輕型軟管流體元件廠</p><p style="text-indent:25px">液體和氣體的交界面稱為自由液面。輕型軟管流體元件公司</p><p style="text-indent:25px">若采用納米流體的兩步制備方法，將Cu納米粒子（平均粒徑26nm）與航天用液體工質(zhì)按一定比例共混，就能有效提高航天器液體回路工質(zhì)的導熱系數(shù)和對流換熱性能。例如說2.5%粒子體積份額的納米流體導熱系數(shù)比純工質(zhì)提高了45%；2.0%粒子體積份額的納米流體對流換熱系數(shù)提高了27.5%，而且納米流體的阻力幾乎沒有增加。隨著電子器件與設備的功率和散熱熱流密度越來越大，液冷技術(shù)將應用于電子冷卻領(lǐng)域（如射流及噴霧冷卻、液冷環(huán)路、熱管等），如果采用納米流體作為液冷系統(tǒng)的冷卻工質(zhì)，將可望提高液冷系統(tǒng)的冷卻能力。輕型軟管流體元件公司</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3159973.html</p></div></div></div></div></div><div id="3zeo8j3" class="page-right twoColRt"><div id="avepc9h" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="1ej7mbd" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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