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><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會(huì)信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="87zby2v" class="twoCol"><div id="uetaszb" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機(jī)械及行業(yè)設(shè)備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_famenti/">閥門</a>?<a href="http://www.cdcfah.com/cp/third-famenti_fatiqg/">閥體</a>?安徽閥門論壇上海富樂供</p><div id="chw73zj" class="leftbox clearfix"><h1>安徽閥門論壇上海富樂供</h1><div id="ccrifcj" class="proBig"><div id="fuwolxj" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shspvid/637262586609863281/4353123.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="kuwi32c" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shspvid/637262586609863281/4353123.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="a8fc3lc" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>安徽閥門論壇</p><p><span>***更新：</span>2020-05-28 14:01:23</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="acjqxo2" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海富樂閥門管件有限公司</a></p><p><span>聯(lián)系人：</span>拓亞光</p><p><span>郵箱: </span></p><p><span>電話: </span>13761339156</p><p><span>傳真: </span>021_69511970</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-51692898-821</p><p><span>地址: </span>上海市嘉定區(qū)外岡工業(yè)區(qū)匯賢路530號(hào)</p><p>[當(dāng)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="cldaczb" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="oda2lkw" class="box"><p><p style="text-indent:25px"><p>提高傳熱效率，板式換熱器是間壁傳熱式換熱器，冷熱流體通過換熱器板片傳熱，流體與板片直接接觸，傳熱方式為熱傳導(dǎo)和對(duì)流傳熱。提高板式換熱器傳熱效率的關(guān)鍵是提高傳熱系數(shù)和對(duì)數(shù)平均溫差。提高換熱器傳熱系數(shù)只有同時(shí)提高板片冷熱兩側(cè)的表面?zhèn)鳠嵯禂?shù)，減小污垢層熱阻，選用熱導(dǎo)率高的板片，減小板片的厚度，才能有效提高換熱器的傳熱系數(shù)，安徽閥門論壇。提高板片的表面?zhèn)鳠嵯禂?shù)，安徽閥門論壇，由于板式換熱器的波紋能使流體在較小的流速下產(chǎn)生湍流(雷諾數(shù)一150時(shí))，安徽閥門論壇，因此能獲得較高的表面?zhèn)鳠嵯禂?shù)，表面?zhèn)鳠嵯禂?shù)與板片波紋的幾何結(jié)構(gòu)以及介質(zhì)的流動(dòng)狀態(tài)有關(guān)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽閥門論壇" src="https://tyunfile.71360.com/UploadFile/shspvid/637262586609863281/4353123.png"></div><p style="text-indent:25px"><p>提高對(duì)數(shù)平均溫差板式換熱器流型有逆流、順流和混合流型(既有逆流又有順流)。在相同工況下，逆流時(shí)對(duì)數(shù)平均溫差大，順流時(shí)小，混合流型介于二者之問。提高換熱器對(duì)數(shù)平均溫差的方法為盡可能采用逆流或接近逆流的混合流型，盡可能提高熱側(cè)流體的溫度，降低冷側(cè)流體的溫度。進(jìn)出口管位置的確定對(duì)于單流程布置的板式換熱器，為檢修方便，流體進(jìn)出口管應(yīng)盡可能布置在換熱器固定端板一側(cè)。介質(zhì)的溫差越大，流體的自然對(duì)流越強(qiáng)，形成的滯留帶的影響越明顯，因此介質(zhì)進(jìn)出口位置應(yīng)按熱流體上進(jìn)下出，冷流體下進(jìn)上出布置，以減小滯留帶的影響，提高傳熱效率。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽閥門論壇" src="https://tyunfile.71360.com/UploadFile/shspvid/637262585386923828/1086411.png"></div><p> 水泵擴(kuò)散器主要是利用流體速度的大小與壓強(qiáng)成反比的原理，將賽車底盤下部的氣流梳理后快速導(dǎo)出，增加賽車底盤下部氣流的速度，從而形成低壓區(qū),達(dá)到增強(qiáng)賽車下壓力的效果。簡(jiǎn)單寶馬水泵擴(kuò)散器形象的理解就是將空氣快速的擴(kuò)散導(dǎo)出，加速氣流流動(dòng)。而氣流速度越高，與氣流垂直方向的氣壓會(huì)越小。將這種裝置裝載在賽車底部，使得賽車上部的氣流氣壓大于底部的氣流壓力，從而形成氣壓差，使賽車產(chǎn)生一股往地面方向的壓力，即所謂的增大下壓力，使賽車輪胎有很好的抓地力。F1賽車車隊(duì)法拉利的賽車248F1使用了來自F2005的雙層**水泵擴(kuò)散器，具體方案是用一塊向前傾斜的翼片，將**水泵擴(kuò)散器分為上下兩部分。據(jù)稱，這樣做的好處是，能夠提高賽車在低速狀態(tài)時(shí)，水泵擴(kuò)散器的抽取效率，以獲得足夠的下壓力。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽閥門論壇" src="https://tyunfile.71360.com/UploadFile/shspvid/637262585205263672/7394155.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/69326.html</p></div></div></div></div></div><div id="w2b7wqh" class="page-right twoColRt"><div id="baxeg8i" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8d3jgn7" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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