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clearfix"><p class="current"> 當前位置:<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>?上海金冷R407C廠家上海冰仆冷暖設(shè)備供應(yīng)</p><div id="pndbhnb" class="leftbox clearfix"><h1>上海金冷R407C廠家上海冰仆冷暖設(shè)備供應(yīng)</h1><div id="p7jt7xv" class="proBig"><div id="7pd77r7" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401017527466302/6732698.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="rdjptzv" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401017527466302/6732698.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="jjpfjft" 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>上海金冷R407C廠家,制冷劑</p><p><span>***更新：</span>2021-02-07 09:20:08</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="9vbxdpv" 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="pxlbpfb" class="page-proshow02"><p class="title">詳細說明</p><div id="7hlhlpd" class="box"><p><p style="text-indent:25px">制冷劑的選用是一個比較復雜的技術(shù)經(jīng)濟問題，上海金冷R407C廠家，需要考慮的因素很多，選擇時應(yīng)根據(jù)具體情況，進行各方面的技術(shù)分析。1.考慮環(huán)保的要求。必須選用符合的各國環(huán)保法規(guī)的制冷劑。2，上海金冷R407C廠家.考慮制冷溫度的要求。根據(jù)制冷劑溫度和冷卻條件的不同，選用高溫（低壓）、中溫（中壓）、低溫（高壓）制冷劑。通常選擇的制冷劑的標準蒸發(fā)溫度要低于制冷溫度10℃。選擇制冷劑還應(yīng)考慮制冷裝置的冷卻條件、使用環(huán)境等。運行中的冷凝壓力不應(yīng)超過壓縮機安全使用條件的規(guī)定值。汽車空調(diào)只能用車外空氣做冷卻介質(zhì)，對其產(chǎn)生影響的氣溫、風速、太陽輻射、熱輻射等因素無不在頻繁發(fā)生變化，上海金冷R407C廠家，其運行條件決定它只能選用高溫（低壓）制冷劑。制冷劑的性質(zhì)直接關(guān)系到制冷裝置的制冷效果、經(jīng)濟性、安全性及運行管理。上海金冷R407C廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海金冷R407C廠家,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017527466302/6732698.png"></div><p style="text-indent:25px">在小型氟利昂制冷裝置中不設(shè)分油器，而裝設(shè)干燥器。同時規(guī)定R12中含水量不得大于0.0025%，系統(tǒng)中不能用一般天然橡膠作密封墊片，而應(yīng)采用丁腈橡膠或氯乙醇等人造橡膠。否則，會造成密封墊片的膨脹引起制冷劑的泄漏。R22也是烷烴的鹵代物，學名二氟一氯甲烷，分子式為CHClF2，標準蒸發(fā)溫度約為－41℃，凝固溫度約為－160℃，冷凝壓力同氨相似，單位容積標準制冷量約為454kcal/m3。R22的許多性質(zhì)與R12相似，但化學穩(wěn)定性不如R12，毒性也比R12稍大。但是，R22的單位容積制冷量卻比R12大的多，接近于氨。當要求－40～－70℃的低溫時，利用R22比R12適宜，故目前R22被較廣應(yīng)用于－40～－60℃的雙級壓縮或空調(diào)制冷系統(tǒng)中。上海金冷R407C廠家R404A 制冷劑具有清潔、低毒、不燃、制冷效果好等特點，大量用于中低溫冷凍系統(tǒng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海金冷R407C廠家,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016667544935/4494992.png"></div><p style="text-indent:25px">常用制冷劑性質(zhì)：（1）氨：標準蒸發(fā)溫度為-33.4℃，凝固溫度為-77.7℃，壓力適中，單位容積制冷量大，流動阻力小，熱導率大。價格低廉對大氣臭氧層無破壞作用，故被較廣應(yīng)用在蒸發(fā)溫度-65℃以上的大中型制冷機中。缺點是毒性較大，可燃，可爆，有強烈刺激性臭味，等熵指數(shù)較大，對鋅銅有腐蝕作用。（2）氟利昂：重點分析熱水器發(fā)文時常用的，1）R22：對大氣臭氧層有輕微破壞作用，并產(chǎn)生溫室效應(yīng)，被列為第二批限用禁用的制冷劑。我國將在2040年1月1日起禁止生產(chǎn)和使用。R22是應(yīng)用較較廣的中溫制冷劑，沸點-40.8℃，凝固點-160℃，無色，氣味弱，不燃燒，不，屬安全制冷劑。它與潤滑油部分互溶，需采取回油措施。</p><p style="text-indent:25px">制冷劑，又稱制冷工質(zhì)，在南方一些地區(qū)俗稱雪種，是一種在制冷系統(tǒng)中不斷循環(huán)并通過其本身的狀態(tài)變化以實現(xiàn)制冷的工作物質(zhì)。制冷劑在蒸發(fā)器內(nèi)吸收被冷卻介質(zhì)（水或空氣等）的熱量而汽化，在冷凝器中將熱量傳遞給周圍空氣或水而冷凝。制冷機中完成熱力循環(huán)的工質(zhì)。它在低溫下吸取被冷卻物體的熱量，然后在較高溫度下轉(zhuǎn)移給冷卻水或空氣。在蒸氣壓縮式制冷機中，使用在常溫或較低溫度下能液化的工質(zhì)為制冷劑，如氟利昂（飽和碳氫化合物的氟、氯、溴衍生物），共沸混合工質(zhì)（由兩種氟利昂按一定比例混合而成的共沸溶液）、碳氫化合物（丙烷、乙烯等）、氨等；制冷劑與潤滑油需有良好互溶性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海金冷R407C廠家,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017145757188/1243380.png"></div><p style="text-indent:25px">R-404A制冷劑物化特性：R404A是一種不含氯的非共沸混合制冷劑，常溫常壓下為無色氣體，貯存在鋼瓶內(nèi)是被壓縮的液化氣體。其 ODP 為 0 ，因此R404A是不破壞大氣臭氧層的環(huán)保制冷劑。主要用途：R404A 主要用于替代 R22 和 R502 ，具有清潔、低毒、不燃、制冷效果好等特點，大量用于中低溫冷凍系統(tǒng)。R-410A制冷劑物化特性：常溫常壓下， R410A 是一種不含氯的氟代烷非共沸混合制冷劑，無色氣體，貯存在鋼瓶內(nèi)是被壓縮的液化氣體。其 ODP 為 0 ，因此R410A是不破壞大氣臭氧層的環(huán)保制冷劑。主要用途：大量用于家用空調(diào)、小型商用空調(diào)、戶式中央空調(diào)等。制冷劑，又稱制冷工質(zhì)。上海東岳R134a價格</p><p style="text-indent:25px">共沸制冷劑由兩種或兩種以上的制冷劑按一定的比例混合而成。上海金冷R407C廠家</p><p style="text-indent:25px">制冷劑的排放一般指直接把制冷劑排放到空氣中，排放時，周圍環(huán)境一定要通風良好，不能接近明火，否則要產(chǎn)生有毒氣體。1，關(guān)閉歧管壓力計上的高，低壓手動閥，連接其高，低壓軟管分別接在壓縮機高，低壓檢修閥上，中間管的自由端放在工作擦布上。2，慢慢打開高壓手動閥，讓制冷劑從中間軟管上排出，閥門不能開得太大，否則壓縮機內(nèi)的冷凍潤滑油會隨制冷劑替代。3，當壓力表讀數(shù)降到0.35MPa以下時，再慢慢打開手動閥，使制冷劑從高，低壓雙向同時排出。4，觀察壓力表讀數(shù)，隨著壓力下降，逐漸開大高，低壓手動閥，直至高，低壓表的讀數(shù)指示為零。上海金冷R407C廠家</p><p style="text-indent:25px">上海冰仆冷暖設(shè)備有限公司主要經(jīng)營范圍是化工，擁有一支專業(yè)技術(shù)團隊和良好的市場口碑。公司業(yè)務(wù)涵蓋制冷劑廠家直銷，冷凍油廠家直銷，壓縮機批發(fā)銷售，制冷配件批發(fā)銷售等，價格合理，品質(zhì)有保證。公司將不斷增強企業(yè)重點競爭力，努力學習行業(yè)知識，遵守行業(yè)規(guī)范，植根于化工行業(yè)的發(fā)展。冰仆冷暖設(shè)備立足于全國市場，依托強大的研發(fā)實力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3202043.html</p></div></div></div></div></div><div id="vtrhdzv" class="page-right twoColRt"><div id="bxvl7l5" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="9ptflh9" 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(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="zxvjxbf" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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