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href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="glzbnzg" class="twoCol"><div id="nhzbyac" 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(xì)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>?上海常用制冷劑價錢上海冰仆冷暖設(shè)備供應(yīng)</p><div id="qf7l4xa" class="leftbox clearfix"><h1>上海常用制冷劑價錢上海冰仆冷暖設(shè)備供應(yīng)</h1><div id="odaxugd" class="proBig"><div id="j2zeu87" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401016747866928/2112113.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="k7zgikr" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401016747866928/2112113.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3uwdfc3" 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>上海常用制冷劑價錢,制冷劑</p><p><span>***更新：</span>2020-12-20 04:17:10</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="u2ta7wt" 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(jī): </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="3pryahl" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hbdfwn3" class="box"><p><p style="text-indent:25px">新的解決方案是開發(fā)HFC族，來擔(dān)當(dāng)制冷劑的主要角色。HCFC族作為過渡方案繼續(xù)使用并將逐漸淘汰。在1990年代，全球變暖對地球生命構(gòu)成了新的威脅。雖然全球變暖的因素很多，上海常用制冷劑價錢，但因?yàn)榭照{(diào)和制冷耗能巨大（美國建筑物耗能約占總能耗的1/3），且許多制冷劑本身就是溫室氣體，制冷劑又被列入了討論范圍。雖然ASHRAE標(biāo)準(zhǔn)34把許多物質(zhì)分類為制冷劑，但只有少部分用于商業(yè)空調(diào)。1985年2月英國南極考察隊(duì)隊(duì)長發(fā)曼（J，上海常用制冷劑價錢.Farman)首先報道，從1977年起就發(fā)現(xiàn)南極洲上空的臭氧總量在每年9月下旬開始迅速減少一半左右，形成“臭氧洞”持續(xù)到11月逐漸恢復(fù)，引起世界性的震驚。在氣體壓縮式制冷機(jī)中，使用氣體制冷劑，如空氣，上海常用制冷劑價錢、氫氣、氦氣等。上海常用制冷劑價錢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海常用制冷劑價錢,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016747866928/2112113.png"></div><p style="text-indent:25px">通常按照制冷劑的標(biāo)準(zhǔn)蒸發(fā)溫度，又分為高、中、低溫三類。標(biāo)準(zhǔn)蒸發(fā)溫度是指標(biāo)準(zhǔn)大氣壓力下的蒸發(fā)溫度，也就是沸點(diǎn)。（1）高溫（低壓）：標(biāo)準(zhǔn)蒸發(fā)溫度（tS）>0℃,冷凝壓力(PC)≦0.2～0.3Mpa,常用的R123等。（2）中溫（中壓）：0℃>tS>-60℃，0.3Mpa<2.0Mpa,常用的有氨，R12,R22,R134a,丙烷等。（3）低溫（高壓）：tS≦-60℃，常用的有R13，乙烯,R744(CO2)等。編號，命各標(biāo)示方法;按照國際統(tǒng)一規(guī)定用字母“R”表示制冷劑，加上后面的數(shù)字和字母組成在GB7778-1987中做了明確規(guī)定。無機(jī)化合物。規(guī)定為R700加上無機(jī)化合物的相對分子質(zhì)量的整數(shù)部分組成，NH3(氨)H2O（水）CO2（二氧化碳）分子量171844；編號R717R718R744。江蘇專用制冷劑工廠制冷劑需具有優(yōu)良的熱物理性能。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海常用制冷劑價錢,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016639536523/2139311.png"></div><p style="text-indent:25px">在低層大氣中必須十分穩(wěn)定（也就是具有足夠長的大氣壽命），使其能夠達(dá)到臭氧層。例如氫氯氟烴雪種HCF22和HCFC123,都有一個氯原子，能消耗臭氧，其大氣壽命分別為 12.1和14年，且氯原子相對活潑，能在低層大氣中發(fā)生分解，到達(dá)臭氧層的數(shù)量就不多。因此HCFC22和HCFC123破壞臭氧的能力比CFCs小得多。制冷劑分類：無機(jī)化合物、有機(jī)化合物、混合工質(zhì)。對空調(diào)行業(yè)規(guī)定了具體淘汰目標(biāo)，1）工商制冷：2003年停止CFC11/12新灌裝，2010年停止CFC11/12維修補(bǔ)充的再灌裝。2）家電：1999年40%新生產(chǎn)的冰箱冷柜的替代，2003年70%新生產(chǎn)的冰箱冷柜的替代，2005年100% 新生產(chǎn)的冰箱冷柜的替代。3）汽車空調(diào)：2002年停止新生產(chǎn)CFC12空調(diào)，2009年后在汽車空調(diào)上只允許使用回收的CFCs。到目前為止，我國僅簽署了倫敦修正案，所以尚沒對HCFCs的淘汰作出承諾。</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、不爆炸，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(dá)400℃以上時，則分解出對人體有害的氣體。R12能與任意比例的潤滑油互溶且能溶解各種有機(jī)物，但其吸水性極弱。60年代開始使用非共沸制冷劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海常用制冷劑價錢,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016165923170/7418519.png"></div><p style="text-indent:25px">消耗臭氧的化合物，除了用于雪種，還被用于氣溶膠推進(jìn)劑、發(fā)泡劑、電子器件生產(chǎn)過程中的清洗劑。長壽命的含溴化合物，如哈龍（Haion)滅火劑，也對臭氧的消耗起很大作用。氯原子和一氧化氮（NO）都能與臭氧反應(yīng)，正在世界大量生產(chǎn)和使用CFCs由于制冷劑其化學(xué)穩(wěn)定性好（如CFC12的大氣壽命為102年）不易在對流層分解，通過大氣環(huán)流進(jìn)入臭氧層所在的平流層，在短波紫外線UV-C的照射下，分解出CI 自由基，參與了對臭氧的消耗。歸納起來，要使臭氧發(fā)生消耗，這種物質(zhì)必須具備兩個特征：含氯、溴或另一種相似的原子參與臭氧變氧的化學(xué)反應(yīng)；R134a 是目前國際公認(rèn)的替代 CFC-12 的主要制冷工質(zhì)之一。上?；裟犴f爾制冷劑費(fèi)用</p><p style="text-indent:25px">新的解決方案是開發(fā)HFC族，來擔(dān)當(dāng)制冷劑的主要角色。上海常用制冷劑價錢</p><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，僅對鋅有輕微的作用。R134a 是目前國際公認(rèn)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。上海常用制冷劑價錢</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(tuán)隊(duì)和良好的市場口碑。冰仆冷暖設(shè)備致力于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(jī)批發(fā)銷售，制冷配件批發(fā)銷售，一切以用戶需求為中心，深受廣大客戶的歡迎。公司從事化工多年，有著創(chuàng)新的設(shè)計、強(qiáng)大的技術(shù)，還有一批獨(dú)立的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造高品質(zhì)服務(wù)體驗(yàn)，為客戶成功提供堅實(shí)有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2480046.html</p></div></div></div></div></div><div id="i3sum8u" class="page-right twoColRt"><div id="bgnfht9" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qprjgx4" 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(qiáng) 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(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div 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