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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mbyahjv" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637221258627441406/2534940.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8iaxzgi" 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>青海結(jié)構(gòu)緊湊換熱器制造商,換熱器</p><p><span>***更新：</span>2021-01-19 07:05:46</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="2t2t8kr" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海板換機(jī)械設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>張?jiān)浦?/p><p><span>郵箱: </span>shinfo@shphe.com</p><p><span>電話: </span>15921733465</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.shphe.com</p><p><span>手機(jī): </span>021-57247534</p><p><span>地址: </span>山陽鎮(zhèn)山寧路99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="pjg7rjr" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="qzbikw7" class="box"><p><p> 流速在～之間時(shí)，壓差大約在。實(shí)驗(yàn)數(shù)據(jù)進(jìn)過二次擬合，獲得流速與進(jìn)出口壓差的關(guān)系式：Y=。而且，這個(gè)流速段的單位鉆井傳熱率都大于100W。流速在1m/s～，傳熱率基本上達(dá)到比較大狀態(tài)。二次擬合方程為：Y=。而流速大于時(shí)，埋地?fù)Q熱器的傳熱率已經(jīng)開始下降。所以綜合考慮，在設(shè)計(jì)埋地?fù)Q熱器時(shí)，循環(huán)水的流速應(yīng)選～之間。鉆井深度雖然對埋地?fù)Q熱器的鉆井深度沒有嚴(yán)格要求，但受到很多因素的制約，如：土壤結(jié)構(gòu)，土壤熱物性，工程要求等。井深度較淺傳熱性能不夠好，而且也容易受環(huán)境的影響。井鉆得太深施工難度較大，很容易碰到巖石層，工程造價(jià)較大。目前**深的鉆井大約在200m左右。本文七口井試驗(yàn)井的地下土質(zhì)基本上都由細(xì)砂組成。施工簡單，打一口井工期較短，土壤傳熱性能較好。本節(jié)就針對鉆井深度，研究其對傳熱率，青海結(jié)構(gòu)緊湊換熱器制造商、導(dǎo)熱系數(shù)、熱阻、壓差與平均溫度的影響[9]，為工程實(shí)踐提供參考依據(jù)。圖1-7～1－11表明鉆井深度不同，其它因素（如：傳熱系數(shù)、壓差與導(dǎo)熱系數(shù)等）都會(huì)隨之改變。導(dǎo)熱系數(shù)隨深度的增加而遞增，傳熱率以拋物線的軌跡在增加。拋物線方程為：Y=。主要原因有：（1），青海結(jié)構(gòu)緊湊換熱器制造商、不同深度土壤的土質(zhì)與結(jié)構(gòu)不同，熱物性也不相同，青海結(jié)構(gòu)緊湊換熱器制造商，從而導(dǎo)熱系數(shù)與傳熱率都有一定的差異；。上海換熱器廠家推薦。青海結(jié)構(gòu)緊湊換熱器制造商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海結(jié)構(gòu)緊湊換熱器制造商,換熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637221258627441406/2534940.jpg"></div><p> 本實(shí)用新型涉及氣氣換熱器技術(shù)領(lǐng)域，具體地說是一種能夠解決筒內(nèi)積液問題的氣氣換熱器的端部結(jié)構(gòu)。背景技術(shù)：現(xiàn)有的氣氣換熱器的兩端皆為同心錐殼，有一定角度，不利于積液流出。技術(shù)實(shí)現(xiàn)要素：本實(shí)用新型的目的是針對現(xiàn)有技術(shù)存在的問題，提供一種能夠解決筒內(nèi)積液問題的氣氣換熱器的端部結(jié)構(gòu)。本實(shí)用新型的目的是通過以下技術(shù)方案解決的：一種氣氣換熱器的端部結(jié)構(gòu)，其特征在于：所述的端部結(jié)構(gòu)包括一同心錐殼端部和一偏心錐殼端部，同心錐殼端部和偏心錐殼端部分別設(shè)置在換熱器殼體的兩端，所述偏心錐殼端部的底部與換熱器殼體的底部處于同一水平位置處。所述偏心錐殼端部的開口端為工藝氣進(jìn)口且偏心錐殼端部的底部設(shè)有蒸汽出口管。所述的蒸汽出口管通過支撐筋固定在偏心錐殼端部的底部。所述同心錐殼端部的開口端為工藝氣出口且同心錐殼端部的上部設(shè)有蒸汽進(jìn)口管。本實(shí)用新型相比現(xiàn)有技術(shù)有如下優(yōu)點(diǎn)：本實(shí)用新型通過將氣氣換熱器的兩端部結(jié)構(gòu)分別設(shè)置為一同心錐殼端部和一偏心錐殼端部，且使得偏心錐殼端部的底部與換熱器殼體的底部處于同一水平位置處，以便于積液排出；上述端部結(jié)構(gòu)簡單實(shí)用，適宜推廣使用。青海使用范圍廣換熱器的用途和特點(diǎn)板式換熱器與其它換熱器比較有什么優(yōu)勢？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海結(jié)構(gòu)緊湊換熱器制造商,換熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637221140089033203/1342887.jpg"></div><p> 并對影響U型管埋地?fù)Q熱器傳熱性能的各因素進(jìn)行了實(shí)驗(yàn)研究與分析，如：熱響應(yīng)實(shí)驗(yàn)初始運(yùn)行時(shí)間、U型管內(nèi)循環(huán)水流速、埋孔深度與埋孔內(nèi)的回填土。2影響U型管埋地?fù)Q熱器傳熱性能的因素分析初始運(yùn)行時(shí)間熱響應(yīng)實(shí)驗(yàn)達(dá)到傳熱平衡需要一段時(shí)間過程。在實(shí)驗(yàn)的前階段，水箱內(nèi)水的溫度高于U型管內(nèi)的水的溫度，而且在加熱器的輸入功率下水溫變化比較迅速。所以土壤傳熱性能測試儀器水箱進(jìn)出管路上的熱電阻所測到的溫度可能會(huì)對測試結(jié)果有影響[7]。根據(jù)圖1－1，前5小時(shí)，由于傳熱剛開始，土壤與循環(huán)水的具有溫差，傳熱平衡還未建立，這時(shí)根據(jù)實(shí)驗(yàn)測得數(shù)據(jù)算出的土壤導(dǎo)熱系數(shù)高達(dá)W/mk，明顯是不符合實(shí)際的；5h~12h內(nèi)雖然熱平衡已經(jīng)被打破，但由于測試時(shí)間較短，循環(huán)水與土壤還未達(dá)到進(jìn)一步平衡，測試出來的導(dǎo)熱系數(shù)還是偏大。12h~20h內(nèi)系統(tǒng)傳熱基本平衡，測試結(jié)果符合要求。圖1－2擬合直線2是忽略**小時(shí)的測試數(shù)據(jù)擬合直線，其導(dǎo)熱系數(shù)比48h內(nèi)所有數(shù)據(jù)算出的導(dǎo)熱系數(shù)要大。這表明：對于一般的測試環(huán)境條件，為了獲得更準(zhǔn)確的導(dǎo)熱系數(shù)，至少忽略**小時(shí)的數(shù)據(jù)，這些數(shù)據(jù)會(huì)導(dǎo)致導(dǎo)熱系數(shù)的估值偏大。循環(huán)水流速埋地?fù)Q熱器的U型埋管內(nèi)循環(huán)水的流速也是影響傳熱性能的重要因素。</p><p> 日產(chǎn)量達(dá)×104t()。多級(jí)閃化法(MSF)占第2位，為，日產(chǎn)量達(dá)×104t。電透析法(ED)日產(chǎn)量×104t()占第3位。其它還有蒸汽壓縮法(VC)、多效蒸餾法(MED)、納米過濾法等。多級(jí)閃化法和逆(反)滲透法是海水淡化領(lǐng)域的主流方法。優(yōu)先材料鈦對氯具有很強(qiáng)的抗腐蝕性，是海水淡化設(shè)備換熱器的優(yōu)先材料。隨著沿海地區(qū)石化、電力等行業(yè)的迅速發(fā)展。應(yīng)用海水取代日益緊張的淡水作為工業(yè)冷卻介質(zhì)，可以節(jié)約大量的淡水資源，獲得很高的經(jīng)濟(jì)效益和社會(huì)效益。但是由于海水腐蝕性強(qiáng)，當(dāng)管材使用普通碳鋼或不銹鋼時(shí)，海水作為冷卻介質(zhì)會(huì)對管材產(chǎn)生嚴(yán)重腐蝕，降低熱交換器的使用壽命。這樣，不僅增加了設(shè)備的更換次數(shù)，同時(shí)也由于設(shè)備失效引起停工過于頻繁而使經(jīng)濟(jì)效益降低。一般情況下，為解決這一問題，需要對管子進(jìn)行材料升級(jí)，升級(jí)材料常用的主要是鈦管。就材料種類而言，典型應(yīng)用是工業(yè)純鈦(ASTMGrade2)，溫度比較高的海水加熱器使用Grade7或者Grade12。Grade16()具有更高的抗腐蝕能力，但是成本較高。另外，事實(shí)表明，Grade1和Grade2等工業(yè)純鈦在天然水、海水和各種氯化物中具有特殊的抗應(yīng)力腐蝕的能力。在海水流速為3～5m/s的鈦制海水淡化設(shè)備中，生物污堵現(xiàn)象是**輕微的。上海板換機(jī)械設(shè)備有限公司為您提供換熱器售后服務(wù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海結(jié)構(gòu)緊湊換熱器制造商,換熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637221258627558593/2064816.jpg"></div><p> 自60年代開始，為了適應(yīng)高溫和高壓條件下的換熱和節(jié)能的需要，典型的管殼式換熱器也得到了進(jìn)一步的發(fā)展。70年代中期，為了強(qiáng)化傳熱，在研究和發(fā)展熱管的基礎(chǔ)上又創(chuàng)制出熱管式換熱器。換熱器中流體的相對流向一般有順流和逆流兩種。順流時(shí)，入口處兩流體的溫差比較大，并沿傳熱表面逐漸減小，至出口處溫差為**小。逆流時(shí)，沿傳熱表面兩流體的溫差分布較均勻。在冷、熱流體的進(jìn)出口溫度一定的條件下，當(dāng)兩種流體都無相變時(shí)，以逆流的平均溫差比較大順流**小。在完成同樣傳熱量的條件下，采用逆流可使平均溫差增大，換熱器的傳熱面積減?。蝗魝鳠崦娣e不變，采用逆流時(shí)可使加熱或冷卻流體的消耗量降低。前者可節(jié)省設(shè)備費(fèi)，后者可節(jié)省操作費(fèi)，故在設(shè)計(jì)或生產(chǎn)使用中應(yīng)盡量采用逆流換熱。當(dāng)冷、熱流體兩者或其中一種有物相變化(沸騰或冷凝)時(shí)，由于相變時(shí)只放出或吸收汽化潛熱，流體本身的溫度并無變化，因此流體的進(jìn)出口溫度相等，這時(shí)兩流體的溫差就與流體的流向選擇無關(guān)了。除順流和逆流這兩種流向外，還有錯(cuò)流和折流等流向。在傳熱過程中，降低間壁式換熱器中的熱阻，以提高傳熱系數(shù)是一個(gè)重要的問題。熱阻主要來源于間壁兩側(cè)粘滯于傳熱面上的流體薄層(稱為邊界層)。板式換熱器怎么拆開清洗？青海結(jié)構(gòu)緊湊換熱器制造商</p><p style="text-indent:25px">換熱器適用于各行業(yè)冷熱交換系統(tǒng)，歡迎定制。青海結(jié)構(gòu)緊湊換熱器制造商</p><p> 不銹鋼中其余添加元素也均發(fā)揮不同作用。像Mo會(huì)在一定程度上抵消氯離子引起的腐蝕，但是也有一個(gè)適用范圍。常用不銹鋼：304，316屬于奧氏體不銹鋼，其牌號(hào)為國外叫法的簡寫（一般均為進(jìn)口），為300系列。美國牌號(hào)是美國鋼鐵協(xié)會(huì)AISI標(biāo)準(zhǔn)，日本是日本工業(yè)協(xié)會(huì)標(biāo)準(zhǔn)SUS。中國主要用成分表示，見下表。304、304L、316、316L的成分區(qū)別。L的含義是Low,表示更低含量的碳。帶L的焊接性能好，數(shù)字一樣的話，成分除碳以外其余成分無大區(qū)別。又由于316與316L價(jià)格差別不大，故直接選用316L。從成分表中可以看出304與316比較大區(qū)別為Mo（鉬）含量不同，所以316抗氯離子濃度能力要比304強(qiáng)。也是我們選用304還是316的主要依據(jù)。兩種材質(zhì)在耐受的氯離子濃度見下頁表格，板材的補(bǔ)充說明：板片常用材料的特點(diǎn)和使用條件補(bǔ)充評(píng)價(jià)材料耐蝕性好壞的指標(biāo)是“耐局部腐蝕當(dāng)量PRE”值越大則耐腐蝕性越好。主要是Cr、MO、Ni的含量決定。1）304不銹鋼：使用于有機(jī)和無機(jī)介質(zhì)中，濃度＜30%溫度＜＝100/濃度﹥30%溫度﹤50的硝酸溫度﹤100的各種濃度的碳酸、氨水和醇類。304L的材料基本和304材料一樣，可焊接性更好，可以用作焊接式換熱器。2）316L天然冷卻水、冷卻塔水、軟化水、碳酸。青海結(jié)構(gòu)緊湊換熱器制造商</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2913282.html</p></div></div></div></div></div><div id="8khjvsu" class="page-right twoColRt"><div id="8i7su7k" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="laxjlnp" 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