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<meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u 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src="https://tyunfile.71360.com/UploadFile/bingpu/637401016854712184/7560085.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gvctqud" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401016854712184/7560085.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="kogy2ke" 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>蘇州混合工質(zhì)制冷劑企業(yè),制冷劑</p><p><span>***更新：</span>2021-01-05 00:28:07</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="hmzbikr" 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="akhjqho" class="page-proshow02"><p class="title">詳細說明</p><div id="yn8i3qx" class="box"><p><p style="text-indent:25px">C02制冷劑絕緣指數(shù)（K）值較高，雖有使壓縮機排氣溫度偏高的問題，但符合制取較高溫度熱水的要求。同時，由于C02低于工作壓力P0很高，壓縮機壓縮比相對其他系統(tǒng)低的多，壓縮機效率高。C02分子量比高分子化合物的小得多，因此相對于一定的蒸發(fā)溫度，它的蒸發(fā)（汽化）潛熱比較大，此外，高的工作壓力，使壓縮機吸氣比容較小，單位容積制冷量較大，可以減少尺寸，使系統(tǒng)結(jié)構(gòu)緊湊。C02低的臨界溫度，使其在熱泵系統(tǒng)循環(huán)中處于跨臨界狀態(tài)，蘇州混合工質(zhì)制冷劑企業(yè)。在放熱過程中較大的溫度滑移，可以和變溫熱源較好的匹配，蘇州混合工質(zhì)制冷劑企業(yè)，蘇州混合工質(zhì)制冷劑企業(yè)。在氣體壓縮式制冷機中，使用氣體制冷劑，如空氣、氫氣、氦氣等。蘇州混合工質(zhì)制冷劑企業(yè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州混合工質(zhì)制冷劑企業(yè),制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016854712184/7560085.png"></div><p style="text-indent:25px">壓縮法回收：用壓縮的方法將制冷劑蒸發(fā)變成液體：從空調(diào)系統(tǒng)排出的制冷劑通過過濾干燥器，除去水分和雜質(zhì)，受吸氣壓力調(diào)節(jié)控制閥，部分液態(tài)制冷劑存留在儲液罐中，氣態(tài)制冷劑進入壓縮機被壓縮成高溫高壓氣體，通過分油器時，與制冷劑混合的冷凍潤滑油被分離出來，流回壓縮機，制冷劑則進入冷凝器被冷卻，通過氣液分離器，被冷凝的液態(tài)制冷劑流到回收容器，回收容器中的部分氣態(tài)制冷劑會通過毛細管被壓縮機吸入。抽真空是為了排除制冷系統(tǒng)內(nèi)的空氣和水氣，是空調(diào)維修中一項極為重要的程序。因為對制冷系統(tǒng)進行維修或更換元件時，空氣會進入系統(tǒng)，且空氣中含有一定量的水蒸氣(濕空氣)。系統(tǒng)抽真空時，時間越長，系統(tǒng)內(nèi)殘余的水分就越少。為較大限度地將系統(tǒng)內(nèi)的空氣及濕氣抽出，必須采用重復(fù)抽真空法，即首先次抽真空完畢后，再連續(xù)抽30min以上。上海常用制冷劑生產(chǎn)廠家制冷劑氣體在制冷循環(huán)中始終為氣態(tài)；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州混合工質(zhì)制冷劑企業(yè),制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016707290433/3672864.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。</p><p style="text-indent:25px">R-134a制冷劑應(yīng)用領(lǐng)域包括：冰箱、冷柜、飲水機、汽車空調(diào)、中央空調(diào)、除濕機、冷庫、商業(yè)制冷、冰水機、冰淇淋機、冷凍冷凝機組等制冷設(shè)備中，同時還可應(yīng)用于氣霧推進劑、醫(yī)用氣霧劑、殺蟲藥拋射劑、聚合物（塑料）物理發(fā)泡劑，以及鎂合金保護氣體等。雖然R134a制冷劑是新裝制冷設(shè)備上替代氟利昂R12較普遍的選擇，但是由于R134a與R12物化性能、理論循環(huán)性能以及壓縮機用油等均不相同，因此對于初裝為R12制冷劑的制冷設(shè)備的售后維修，如果需要再添加或更換制冷劑，仍然只能添加R12，通常不能直接以R134a替代R12（也就是說通常不可以進行換血式的替換）。20世紀30年代，一系列鹵代烴制冷劑相繼出現(xiàn)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州混合工質(zhì)制冷劑企業(yè),制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016089673242/6903432.png"></div><p style="text-indent:25px">R134a的化學(xué)穩(wěn)定性很好，然而由于它的溶水性比R22高，所以對制冷系統(tǒng)不利，即使有少量水分存在，在潤滑油等的作用下，將會產(chǎn)生酸、二氧化碳或一氧化碳，將對金屬產(chǎn)生腐蝕作用，或產(chǎn)生“鍍銅”作用，所以R134a對系統(tǒng)的干燥和清潔要求更高。R134a對鋼、鐵、銅、鋁等金屬未發(fā)現(xiàn)有相互制冷劑化學(xué)反應(yīng)的現(xiàn)象，*對鋅有輕微的作用。R134a 是目前國際公認的替代 CFC-12 的主要制冷工質(zhì)之一，常用于車用空調(diào)，商業(yè)和工業(yè)用制冷系統(tǒng)，以及作為發(fā)泡劑用于硬塑料保溫材料生產(chǎn)，也可以用來配置其他混合致冷劑，如 R 404a 和 R 407c 等。R410A 是一種不含氯的氟代烷非共沸混合制冷劑。蘇州混合工質(zhì)制冷劑企業(yè)</p><p style="text-indent:25px">氨作為制冷劑幾乎不溶解于油、流動阻力小，泄漏時易發(fā)現(xiàn)。蘇州混合工質(zhì)制冷劑企業(yè)</p><p style="text-indent:25px">C02應(yīng)用研究的一個重要領(lǐng)域是熱泵熱水器（HPWH）。C02跨臨界循環(huán)中氣體冷卻器所具有的較高的排氣溫度，較大的溫度滑移和冷卻介質(zhì)的溫升過程相匹配，使其在熱泵循環(huán)方面具有獨特的優(yōu)勢。通過調(diào)整循環(huán)的排氣壓力，可使氣體冷卻器的排熱過程較好適應(yīng)外部熱源的溫度和溫升需要。研究結(jié)果表明，當用環(huán)境空氣作熱源，0℃環(huán)境進水溫度8℃，熱水出水溫度為60℃時，該系統(tǒng)COP值高達4.3.一個更大優(yōu)點是毫無困難的產(chǎn)出90℃的熱水COP值仍較高。而普通的熱泵熱水器限制產(chǎn)水溫度在55℃以下。因而C02熱泵系統(tǒng)可較好的滿足采暖，空調(diào)和生活熱水的加熱要求。C02作為制冷工質(zhì)在熱泵中的應(yīng)用將有效的解決空調(diào)冷熱源面臨的資源與環(huán)境壓力，應(yīng)用前景良好。蘇州混合工質(zhì)制冷劑企業(yè)</p><p style="text-indent:25px">上海冰仆冷暖設(shè)備有限公司致力于化工，是一家貿(mào)易型公司。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。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造化工良好品牌。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/2703452.html</p></div></div></div></div></div><div id="tn4mlhj" class="page-right twoColRt"><div id="ticj3bd" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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