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clearfix tcPro"><section class="home-main container clearfix"><div id="cgyvfri" class="twoCol"><div id="edk3pvh" class="page-proshow 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</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>?巨化R245fa供應上海冰仆冷暖設(shè)備供應</p><div id="zyfc4sn" class="leftbox clearfix"><h1>巨化R245fa供應上海冰仆冷暖設(shè)備供應</h1><div id="lbqix7k" class="proBig"><div id="nwob9by" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401017190591160/1670216.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gkczoa2" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401017190591160/1670216.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="2id7km8" 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>巨化R245fa供應,制冷劑</p><p><span>***更新：</span>2021-01-20 03:16:32</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="0czgqxz" 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="kzgx7zw" class="page-proshow02"><p class="title">詳細說明</p><div id="febyx7r" class="box"><p><p style="text-indent:25px">制冷劑不足的表現(xiàn)：①氣管閥門發(fā)干，用手觸摸沒有明顯的涼感。其原因是制冷劑不足導致蒸發(fā)器內(nèi)的沸騰終結(jié)點提前，使該閥的制冷劑過熱度增大，閥門的溫度升高，大于室外空氣的**溫度。②液管閥門結(jié)霜。其原因是制冷劑不足導致液管內(nèi)壓力下降，沸點降低，使閥門溫度低于冰點。③打開室內(nèi)機面板，取下過濾網(wǎng)，可發(fā)現(xiàn)部分蒸發(fā)器結(jié)露或結(jié)霜。其原因是由于制冷劑不足，*使部分蒸發(fā)器發(fā)生了沸騰吸熱，使制冷面積相應減少；④室外機排風沒有熱感。其原因是制冷劑不足導致冷凝壓力、冷凝溫度都降低，排風溫度也降低。⑤排水軟管排水斷斷續(xù)續(xù)或根本不排水。其原因是蒸發(fā)器制冷面積減少，巨化R245fa供應，結(jié)露面積也減少，凝結(jié)水量降低。⑥室外機氣、液閥門有油污，有油污就有泄漏。其原因是制冷劑與冷凍油有一定的互溶性，氟從漏點逸出后進人大氣中，而油附著在漏點周圍。⑦測量空調(diào)器的工作電流小于額定電流。其原因是制冷劑不足而使壓縮機工作負荷減少，電流下降。⑧從室外機充氟口測量的壓力低于0.45Mpa，巨化R245fa供應。其原因是制冷劑不足導致了蒸發(fā)壓力下降，巨化R245fa供應。目前使用的制冷劑已達70～80種，并正在不斷發(fā)展增多。巨化R245fa供應</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="巨化R245fa供應,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017190591160/1670216.png"></div><p style="text-indent:25px">根據(jù)對國內(nèi)外大中型冷庫制冷劑使用情況的調(diào)研，分析了大中型冷庫制冷劑的現(xiàn)狀。根據(jù)國際上較新的文獻，評論了冷庫制冷劑應用的發(fā)展新動向。結(jié)果表明：在國內(nèi)外大中型冷庫中，目前采用氨制冷劑是主流，今后氨仍然將是主要制冷劑。在蒸發(fā)溫度-35℃以上，壓縮式制冷采用氨制冷劑是較節(jié)能的。采用氨制冷劑的關(guān)鍵問題是安全問題。在制冷劑的發(fā)展動向中，CO2系統(tǒng)成為新一代制冷劑關(guān)注的重點，CO2/NH3復疊式制冷系統(tǒng)具有較大的發(fā)展?jié)摿ΑＴ陂g接制冷系統(tǒng)中，采用氨水替代乙二醇作為載冷劑，可以使系統(tǒng)能耗明顯降低。巨化R245fa供應制冷劑性能優(yōu)良、無毒、不燃，能適應不同的溫度區(qū)域，明顯地改善了制冷機的性能。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="巨化R245fa供應,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017229537467/2507351.png"></div><p style="text-indent:25px">制冷劑物質(zhì)性能優(yōu)良、無毒、不燃，能適應不同的溫度區(qū)域，明顯地改善了制冷機的性能。幾種制冷劑在空調(diào)中變得很普遍，包括CFC-11.CFC-12. CFC-113.CFC-114和HCFC-22.20世紀50年代的，開始使用共沸制冷劑。60年代開始使用非共沸制冷劑?？照{(diào)工業(yè)從幼小成長為幾十億美元的產(chǎn)業(yè)，使用的都是以上幾種制冷劑。到1963年,這些制冷劑占到整個有機氟工業(yè)產(chǎn)量的98%。到1970年代中期，對臭氧層變薄的關(guān)注浮出水面，CFC族物質(zhì)可能要承擔部分責任。這導致了1987年蒙特利爾議定書的通過，議定書要求淘汰CFC和HCFC族。</p><p style="text-indent:25px">混合共沸制冷劑，目前尚不公開配方，用在復疊式制冷機中，在空氣冷凝的前提下，蒸發(fā)溫度可以達到-150度左右。碳氫制冷劑主要是節(jié)能和環(huán)保這兩大優(yōu)點；節(jié)能方面：用R433b的空調(diào)要比用R134,R22的空調(diào)節(jié)省能耗15%至35%左右。環(huán)保方面：碳氫制冷劑屬于天然工質(zhì)，因此對大氣無污染、對臭氧層無破壞和溫室效應幾乎為零。按成分有以下幾種。（1）無機化合物。水、氨、二氧化碳等。（2）飽和碳氫化合物的衍生物，俗稱氟利昂。主要是甲烷和乙烷的衍生物。如R12,R22,R134a等。（3）飽合碳氫化合物。如丙烷，異丁烷等。（4）不飽和碳氫化合物。如乙烯，丙烯等。（5）共沸混合制冷劑。如R502等。（6）非共沸混合制冷劑。如R407c，R410等。制冷劑需有良好的電氣絕緣性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="巨化R245fa供應,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017458432956/1113027.png"></div><p style="text-indent:25px">制冷劑性質(zhì)要求：（1）具有優(yōu)良的熱力學特性，以便能在給定的溫度區(qū)域內(nèi)運行時有較高的循環(huán)效率。具體要求為：臨界溫度高于冷凝溫度、與冷凝溫度對應的飽和壓力不要太高、標準沸點較低、流體比熱容小、制冷劑絕熱指數(shù)低、單位容積制熱量較大等。（2）具有優(yōu)良的熱物理性能具體要求為：較高的傳熱系數(shù)、較低的粘度及較小的密度。（3）具有良好的化學穩(wěn)定性要求工質(zhì)在高溫下具有良好的化學穩(wěn)定性，保證在較高工作溫度下工質(zhì)不發(fā)生分解。（4）與潤滑油有良好互溶性。（5）安全性工質(zhì)應無毒、無刺激性、無燃燒性及性。制冷劑分類：無機化合物、有機化合物、混合工質(zhì)。金冷R404A廠家</p><p style="text-indent:25px">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。巨化R245fa供應</p><p style="text-indent:25px">液氨制冷劑透明無色，氨蒸氣無色，有強烈的刺激臭味。氨對人體有較大的毒性，當氨液飛濺到皮膚上時會引起凍著。當空氣中氨蒸氣的容積達到0.5-0.6%時可引起。故機房內(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，分解為氮和氫氣，氫氣與空氣中的氧氣混合后會發(fā)生。與空氣混合的體積分數(shù)在11%-14%時即可燃燒。在16%-25%時遇明火可能。在0.5%-0.6%時，人在其中停留半小時就會中毒。氨極溶于水，0℃時每升水能溶解130升氨氣。一般規(guī)定液氨中含水量低于0.2%。巨化R245fa供應</p><p style="text-indent:25px">上海冰仆冷暖設(shè)備有限公司致力于化工，以科技創(chuàng)新實現(xiàn)***管理的追求。冰仆冷暖設(shè)備擁有一支經(jīng)驗豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供制冷劑廠家直銷，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)備始終以本分踏實的精神和必勝的信念，影響并帶動團隊取得成功。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/2923804.html</p></div></div></div></div></div><div id="bfxewsp" class="page-right twoColRt"><div id="8i7i9xu" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="chegipg" 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" 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</p></a></div><div id="3wl7qxo" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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