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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="na3w2x7" class="twoCol"><div id="2t9cgho" 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-_jxhxp/">精細化學(xué)品</a>?<a href="http://www.cdcfah.com/cp/second-jxhxp_tlzjdy/">涂料助劑</a>?<a href="http://www.cdcfah.com/cp/third-tlzjdy_qttlzjrh/">其他涂料助劑</a>?上海巨化R245fa報價上海冰仆冷暖設(shè)備供應(yīng)</p><div id="3eymdye" class="leftbox clearfix"><h1>上海巨化R245fa報價上海冰仆冷暖設(shè)備供應(yīng)</h1><div id="ocgiuwn" class="proBig"><div id="tvrt2dm" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401017243257164/1555685.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ow8myvh" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401017243257164/1555685.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xf2ar2v" 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>上海巨化R245fa報價,制冷劑</p><p><span>***更新：</span>2021-01-24 02:16:09</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="s8arl37" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海冰仆冷暖設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>徐佳華</p><p><span>郵箱: </span>444054147@qq.com</p><p><span>電話: </span>13761656620</p><p><span>傳真: </span>1_1</p><p><span>網(wǎng)址: </span>https://www.shbpln.com</p><p><span>手機: </span>1-1</p><p><span>地址: </span>美丹路222號629室</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="xqfgs8w" class="page-proshow02"><p class="title">詳細說明</p><div id="kif8dpl" class="box"><p><p style="text-indent:25px">R12為烷烴的鹵代物，學(xué)名二氟二氯甲烷，分子式為CF2Cl2。它是我國中小型制冷裝置中使用較為較廣的中壓中溫制冷劑。R12的標(biāo)準(zhǔn)蒸發(fā)溫度為－29.8℃，冷凝壓力一般為0.78～0.98MPa，凝固溫度為-155℃，單位容積標(biāo)準(zhǔn)制冷量約為288kcal/m3。R12是一種無色、透明、沒有氣味，幾乎無毒性、不燃燒、不，很安全的制冷劑。只有在空氣中容積濃度超過80%時才會使人窒息。但與明火接觸或溫度達400℃以上時，則分解出對人體有害的氣體，上海巨化R245fa報價，上海巨化R245fa報價。R12能與任意比例的潤滑油互溶且能溶解各種有機物，上海巨化R245fa報價，但其吸水性極弱。其他化學(xué)制品包括化學(xué)氰（石油醚和石腦油）、二氧化硫(R-764)和甲醚，曾被作為蒸氣壓縮用制冷劑。上海巨化R245fa報價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海巨化R245fa報價,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017243257164/1555685.png"></div><p style="text-indent:25px">冰箱系統(tǒng)抽程控的時候把已經(jīng)鎖上的高低壓閥門打開，開始進行正式的系統(tǒng)抽空工作，制冷系統(tǒng)如果已經(jīng)被抽成程真空的時候關(guān)閉高低壓閥門再關(guān)閉真空泵。這個時候制冷系統(tǒng)處于真空狀態(tài)，就可以添加制冷劑了，把黃色管與真空本斷開街道制冷劑的并口上，打開制冷劑瓶子的氣門芯，黃色管里的空氣排凈后倒轉(zhuǎn)制冷劑瓶放好，打開高低壓閥門加入制冷劑。制冷劑加的差不多之后再把高低壓閥門關(guān)閉，放好制冷劑瓶，這樣冰箱制冷劑的添加就完成了。雖然冰箱制冷劑的添加看著簡單，其實細節(jié)方面容易出錯，所以還是建議大家找專業(yè)的人員來添加制冷劑，如果對自己有信心也可以自己完成冰箱制冷劑的添加。上海巨化R245fa報價制冷劑，又稱制冷工質(zhì)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海巨化R245fa報價,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016854712184/7560085.png"></div><p style="text-indent:25px">氨制冷裝置中不能使用銅及銅合金材料，并規(guī)定氨中含水量不應(yīng)超過0.2%。氨的臨界溫度較高（tkr=132℃），汽化潛熱大，在大氣壓力下為1164KJ/Kg，標(biāo)準(zhǔn)工況下的單位容積制冷量也大，氨壓縮機尺寸可以較小。純氨對潤滑油無不良影響，但有水分時，會降低冷凍油的潤滑作用。氨在潤滑油中不易溶解，故要在裝置中設(shè)置油分離器，減少潤滑油進入冷凝器和蒸發(fā)器，防止熱交換表面被油污染后傳熱性能降低。純氨對鋼鐵無腐蝕作用，但當(dāng)氨中含有水分時將腐蝕銅和銅合金（磷青銅除外），故在氨制冷系統(tǒng)中對管道及閥件均不采用銅和銅合金。</p><p style="text-indent:25px">目前使用的制冷劑已達70～80種，并正在不斷發(fā)展增多。但用于食品工業(yè)和空調(diào)制冷的*十多種。氨（代號：R717）：氨是目前使用較為較廣的一種中壓中溫制冷劑。氨的凝固溫度為-77.7℃，標(biāo)準(zhǔn)蒸發(fā)溫度為－33.3℃，在常溫下冷凝壓力一般為1.1～1.3MPa，即使當(dāng)夏季冷卻水溫高達30℃時也絕不可能超過1.5MPa。氨的單位標(biāo)準(zhǔn)容積制冷量大約為520kcal/m3。氨有很好的吸水性，即使在低溫下水也不會從氨液中析出而凍結(jié)，故系統(tǒng)內(nèi)不會發(fā)生“冰塞”現(xiàn)象。氨對鋼鐵不起腐蝕作用，但氨液中含有水分后，對銅及銅合金有腐蝕作用，且使蒸發(fā)溫度稍許提高。制冷劑在低溫下吸取被冷卻物體的熱量。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海巨化R245fa報價,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016658657708/9147051.png"></div><p style="text-indent:25px">向制冷系統(tǒng)中加入氮氣，然后用肥皂液檢漏。若有泄漏，泄漏處會出現(xiàn)肥皂泡。采用壓力檢漏時，嚴禁用壓縮空氣進行檢漏，因為壓縮空氣中含有水分，水分隨空氣進入后會在膨脹閥處產(chǎn)生冰堵。工業(yè)氮氣無腐蝕性、無水分，且價格便宜，但瓶裝高壓氮氣一定要用減壓表加注。加壓試漏時，首先應(yīng)正確連接歧管壓力計：高壓軟管接在排氣管道上(高壓側(cè))，低壓軟管接在吸氣管道上(低壓側(cè))。將軟管連接在壓縮機的高、低壓檢修閥上，打開高、低壓檢修閥，向系統(tǒng)中加入干燥氮氣其壓力一般應(yīng)為1.5MPa左右。當(dāng)系統(tǒng)達到規(guī)定壓力后，用肥皂液涂在系統(tǒng)的各連接處和焊接處，仔細觀察有無泄漏。泄漏大的地方有微小聲音，并出現(xiàn)大泡沫，泄漏小的地方，則間斷出現(xiàn)小泡沫，所以檢漏必須仔細，并反復(fù)檢查3～5次，發(fā)現(xiàn)泄漏處應(yīng)作出記號并及時加以修復(fù)，然后再去試漏其他接頭處，直至泄漏徹底排除。修漏完畢，應(yīng)試漏，讓系統(tǒng)保壓24～48h，若壓力不降低，則試漏合格，倘若壓力有明顯降低，必須重新進行檢漏，直到找出泄漏處并加以排除為止。共沸制冷劑在氣化或液化過程中，蒸汽成分與溶液成分始終保持相同；上海巨化R245fa報價</p><p style="text-indent:25px">R410A制冷劑是不破壞大氣臭氧層的環(huán)保制冷劑。上海巨化R245fa報價</p><p style="text-indent:25px">認為較有前途的R22潛代品為R407c和R410A。R407c是R32R125R134a以23：25：52的質(zhì)量百分比組成的三元非共沸制冷劑，蒸發(fā)壓力和制冷壓力與R22非常接近。但在制熱工況下單位容積制冷量和COP都小于R22。在相同設(shè)計運行能力的熱泵熱水系統(tǒng)中，采用R407c熱水加熱系統(tǒng)耗功明顯高于R22系統(tǒng)。使得在高水溫時COP低于R22系統(tǒng)。R410A是R32和R125按照50：50的質(zhì)量百分比組成的近共沸混合制冷劑。其溫度滑移不超過0.2℃，這給制冷劑充灌，設(shè)備更換提供了方便。但是R410A制熱工況下的COP比R22約小9%，其蒸發(fā)壓力，冷凝壓力以及容積制冷量都比R22大的多，同溫度下它的壓力值比R22約高60%，傳熱性能及流動性較好。不能直接用于R22系統(tǒng)。必須重新設(shè)計壓縮機，換熱器，管路和系統(tǒng)。上海巨化R245fa報價</p><p style="text-indent:25px">上海冰仆冷暖設(shè)備有限公司是一家銷售:制拎設(shè)備、化工產(chǎn)品(除危險化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品)、儀器儀表、汽車配件，機械配件、五金電器、焊接工具。銷售:制拎設(shè)備、化工產(chǎn)品(除危險化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品)、儀器儀表、汽車配件，機械配件、五金電器、焊接工具。的公司，是一家集研發(fā)、設(shè)計、生產(chǎn)和銷售為一體的專業(yè)化公司。冰仆冷暖設(shè)備作為銷售:制拎設(shè)備、化工產(chǎn)品(除危險化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品)、儀器儀表、汽車配件，機械配件、五金電器、焊接工具。銷售:制拎設(shè)備、化工產(chǎn)品(除危險化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品)、儀器儀表、汽車配件，機械配件、五金電器、焊接工具。的企業(yè)之一，為客戶提供良好的制冷劑廠家直銷，冷凍油廠家直銷，壓縮機批發(fā)銷售，制冷配件批發(fā)銷售。冰仆冷暖設(shè)備不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺，以應(yīng)用為重點，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務(wù)。冰仆冷暖設(shè)備始終關(guān)注化工市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2981499.html</p></div></div></div></div></div><div id="jcjiug8" class="page-right twoColRt"><div id="73ct2zq" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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