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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>?杭州液態(tài)制冷劑要多少錢上海冰仆冷暖設(shè)備供應(yīng)</p><div id="3lndxb3" class="leftbox clearfix"><h1>杭州液態(tài)制冷劑要多少錢上海冰仆冷暖設(shè)備供應(yīng)</h1><div id="drf53vl" class="proBig"><div id="l33hdl5" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401016739995559/6821260.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lh3drfl" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401016739995559/6821260.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3hn5zdp" 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>杭州液態(tài)制冷劑要多少錢,制冷劑</p><p><span>***更新：</span>2020-11-28 01:20:41</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="j37h5pd" 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(hào)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="jp31rpn" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3bhvxlj" class="box"><p><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(duì)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(duì)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，杭州液態(tài)制冷劑要多少錢，杭州液態(tài)制冷劑要多少錢，參與了對(duì)臭氧的消耗。歸納起來，杭州液態(tài)制冷劑要多少錢，要使臭氧發(fā)生消耗，這種物質(zhì)必須具備兩個(gè)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)；20世紀(jì)30年代，一系列鹵代烴制冷劑相繼出現(xiàn)。杭州液態(tài)制冷劑要多少錢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州液態(tài)制冷劑要多少錢,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016739995559/6821260.png"></div><p style="text-indent:25px">氨的比重和粘度小，放熱系數(shù)高，價(jià)格便宜，易于獲得。但是，氨有較強(qiáng)的毒性和可燃性。若以容積計(jì)，當(dāng)空氣中氨的含量達(dá)到0.5%～0.6%時(shí)，人在其中停留半個(gè)小時(shí)即可中毒，達(dá)到11%～13%時(shí)即可點(diǎn)燃，達(dá)到16%時(shí)遇明火就會(huì)。因此，氨制冷機(jī)房必須注意通風(fēng)排氣，并需經(jīng)常冰箱排除系統(tǒng)中的空氣及其它不凝性氣體?？偵纤?，氨作為制冷劑的優(yōu)點(diǎn)是：易于獲得、價(jià)格低廉、壓力適中、單位制冷量大、放熱系數(shù)高、幾乎不溶解于油、流動(dòng)阻力小，泄漏時(shí)易發(fā)現(xiàn)。其缺點(diǎn)是：有刺激性臭味、有毒、可以燃燒和，對(duì)銅及銅合金有腐蝕作用。杭州液態(tài)制冷劑要多少錢碳?xì)渲评鋭┲饕枪?jié)能和環(huán)保這兩大優(yōu)點(diǎn)；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州液態(tài)制冷劑要多少錢,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016854712184/7560085.png"></div><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(shí)才會(huì)使人窒息。但與明火接觸或溫度達(dá)400℃以上時(shí)，則分解出對(duì)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。</p><p style="text-indent:25px">目前制冷劑價(jià)格上升主要有三個(gè)因素：首先是的各國將螢石提升為戰(zhàn)略性資源，對(duì)其實(shí)行了保護(hù)性開發(fā)；其次是空調(diào)（包括汽車空調(diào)）消費(fèi)量的增加帶動(dòng)了對(duì)制冷劑的需求；較后還有資金炒火的因素。制冷劑價(jià)格上升還有一個(gè)國際因素，根據(jù)《蒙特利爾議定書》，2010年發(fā)達(dá)的各國的低端制冷劑（如R22）產(chǎn)能已基本關(guān)停，發(fā)達(dá)的各國不再使用R22作為制冷劑，但R22作為下游含氟聚合物的主要原料，其對(duì)R22的需求依然存在。由于發(fā)展中的各國對(duì)R22完全淘汰還要等到2030年，因此這對(duì)發(fā)展中的各國的制冷劑生產(chǎn)商來說也是一個(gè)利好。目前R22的供需缺口至少維持至2013年，也意味著制冷劑的行業(yè)景氣至少還能持續(xù)兩年時(shí)間。氨作為制冷劑幾乎不溶解于油、流動(dòng)阻力小，泄漏時(shí)易發(fā)現(xiàn)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州液態(tài)制冷劑要多少錢,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017173335302/5352649.png"></div><p style="text-indent:25px">R-134a(代號(hào)：R134a）分子式： CH 2 FCF 3 （四氟乙烷），分子量：102.03，沸點(diǎn) ：-26.26℃ ，凝固點(diǎn) ：-96.6°C ，臨界溫度：101.1 ℃ ，臨界壓力：4067kpa，飽和液體密度：25℃ ， 1.207g/cm 3 ，液體比熱：25℃ ， 1.51KJ/(Kg·℃)，溶解度( 水中， 25℃ ) ：0.15% ，臨界密度：0.512g/cm3，破壞臭氧潛能值（ ODP ）：0 ，全球變暖系數(shù)值（ GWP ）：0.29，沸點(diǎn)下蒸發(fā)潛能 :215 kJ/kg，質(zhì)量指標(biāo) ：純度 ≥ 99.9 % ，水份PPm≤ 0.0010，酸度 PPm≤ 0.00001 ，蒸發(fā)殘留物PPm≤ 0.01，R134a作為R12的替代制冷劑，它的許多特性與R12很相像。R134a的毒性非常低，在空氣中不可燃，安全類別為A1，是很安全的制冷劑。制冷劑需具有優(yōu)良的熱力學(xué)特性，以便能在給定的溫度區(qū)域內(nèi)運(yùn)行時(shí)有較高的循環(huán)效率。杭州液態(tài)制冷劑要多少錢</p><p style="text-indent:25px">制冷劑是制冷機(jī)中完成熱力循環(huán)的工質(zhì)。杭州液態(tài)制冷劑要多少錢</p><p style="text-indent:25px">液氨制冷劑透明無色，氨蒸氣無色，有強(qiáng)烈的刺激臭味。氨對(duì)人體有較大的毒性，當(dāng)氨液飛濺到皮膚上時(shí)會(huì)引起凍著。當(dāng)空氣中氨蒸氣的容積達(dá)到0.5-0.6%時(shí)可引起。故機(jī)房內(nèi)空氣中氨的濃度不得超過0.02mg/L。氨在常溫下不易燃燒，加熱至350℃時(shí)，分解為氮和氫氣，氫氣與空氣中的氧氣混合后會(huì)發(fā)生。與空氣混合的體積分?jǐn)?shù)在11%-14%時(shí)即可燃燒。在16%-25%時(shí)遇明火可能。在0.5%-0.6%時(shí)，人在其中停留半小時(shí)就會(huì)中毒。氨極溶于水，0℃時(shí)每升水能溶解130升氨氣。一般規(guī)定液氨中含水量低于0.2%。杭州液態(tài)制冷劑要多少錢</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)分為制冷劑廠家直銷，冷凍油廠家直銷，壓縮機(jī)批發(fā)銷售，制冷配件批發(fā)銷售等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競(jìng)爭(zhēng)力，努力學(xué)習(xí)行業(yè)知識(shí)，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)備憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來的聲譽(yù)和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2171122.html</p></div></div></div></div></div><div id="h557njp" class="page-right twoColRt"><div id="jrvp5jz" class="box01 margin10 clearfix"><h3><a 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