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id="7dxovro" class="leftbox clearfix"><h1>上海**制冷劑工廠上海冰仆冷暖設(shè)備供應(yīng)</h1><div id="2s98ty2" class="proBig"><div id="ktqn8qg" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401016639536523/2139311.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jyfczl7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bingpu/637401016639536523/2139311.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="o2su78m" 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>上海**制冷劑工廠,制冷劑</p><p><span>***更新：</span>2020-12-17 03:23:06</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="lvxpmoq" 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="vkcz2eq" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="wgdkcjq" 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，上海**制冷劑工廠。雖然全球變暖的因素很多，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**制冷劑工廠.Farman)首先報(bào)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，上海**制冷劑工廠，形成“臭氧洞”持續(xù)到11月逐漸恢復(fù)，引起世界性的震驚。制冷劑在較高溫度下轉(zhuǎn)移給冷卻水或空氣。上海**制冷劑工廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海**制冷劑工廠,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016639536523/2139311.png"></div><p style="text-indent:25px">在氣體壓縮式制冷機(jī)中，使用氣體制冷劑，如空氣、氫氣、氦氣等，這些氣體在制冷循環(huán)中始終為氣態(tài)；在吸收式制冷機(jī)中，使用由吸收劑和制冷劑組成的二元溶液作為工質(zhì)，如氨和水、溴化鋰（分子式：LiBr。白色立方晶系結(jié)晶或粒狀粉末，極易溶于水）和水等；蒸汽噴射式制冷機(jī)用水作為制冷劑。制冷劑的主要技術(shù)指標(biāo)有飽和蒸氣壓強(qiáng)、比熱、粘度、導(dǎo)熱系數(shù)、表面張力等。1960年以后，人們對非共沸混合工質(zhì)的應(yīng)用進(jìn)行了大量的試驗(yàn)研究，并已將其用于天然氣的液化和分離等方面。杭州**制冷劑哪家好共沸制冷劑在氣化或液化過程中，蒸汽成分與溶液成分始終保持相同；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海**制冷劑工廠,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017229537467/2507351.png"></div><p style="text-indent:25px">在蒸汽壓縮式制冷機(jī)中，制冷劑選擇除了要有較好的熱力性質(zhì)和物理化學(xué)性質(zhì)外，更應(yīng)具有優(yōu)良的環(huán)境特性。具體要求如下：（1）對人類生態(tài)環(huán)境無破壞作用。不破壞大氣臭氧層，不產(chǎn)生溫室效應(yīng)。（2）臨界溫度較高。在常溫或普通低溫下能夠液化。希望臨界溫度比環(huán)境溫度高的多，才能減少制冷劑節(jié)流損失，提高循環(huán)經(jīng)濟(jì)性。（3）在工作溫度范圍內(nèi)，具有適當(dāng)?shù)娘柡险羝麎毫?，較起碼蒸發(fā)壓力不得低于大氣壓力，以免外部空氣滲入系統(tǒng)中；冷凝壓力不宜過高，否則會(huì)引起壓縮機(jī)耗功增加，并要求系統(tǒng)具有較高的承壓能力，增加設(shè)備成本。</p><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(diǎn)，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。R404A是不破壞大氣臭氧層的環(huán)保制冷劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海**制冷劑工廠,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017196938816/319685.png"></div><p style="text-indent:25px">制冷劑命名方法：(1)無機(jī)化合物，無機(jī)化合物的簡寫符號(hào)規(guī)定為R7()。括號(hào)表示一組數(shù)字，這組數(shù)字是該無機(jī)物分子量的整數(shù)部分。(2)鹵代烴和烷烴類，烷烴類化合物的分子通式為CmH2m 2；鹵代烴的分子通式為CmHnFxClyBrz(2m 2 = n x y z)，它們的簡寫符號(hào)規(guī)定為R(m-1)(n 1)(x)B(z)。下圖為一些制冷劑的符號(hào)舉例。(3)非共沸混合制冷劑，非共沸混合制冷劑的簡寫符號(hào)為R4()。括號(hào)表示一組數(shù)字，這組數(shù)字為該制冷劑命名的先后順序號(hào)，從00開始。(4)共沸混合制冷劑，共沸混合制冷劑的簡寫符號(hào)為R5()。括號(hào)表示一組數(shù)字，這組數(shù)字為該制冷劑命名的先后順序號(hào)，從00開始。(5)環(huán)烷烴、鏈烯烴以及它們的鹵代物。寫符號(hào)規(guī)定：環(huán)烷烴及環(huán)烷烴的鹵代物用字母“RC”開頭，鏈烯烴及鏈烯烴的鹵代物用字母“R1”開頭。(6)有機(jī)制冷劑則在600序列任意編號(hào)。在氣體壓縮式制冷機(jī)中，使用氣體制冷劑，如空氣、氫氣、氦氣等。上海**制冷劑工廠</p><p style="text-indent:25px">混合共沸制冷劑，目前尚不公開配方，用在復(fù)疊式制冷機(jī)中。上海**制冷劑工廠</p><p style="text-indent:25px">向制冷系統(tǒng)中加入氮?dú)?，然后用肥皂液檢漏。若有泄漏，泄漏處會(huì)出現(xiàn)肥皂泡。采用壓力檢漏時(shí)，嚴(yán)禁用壓縮空氣進(jìn)行檢漏，因?yàn)閴嚎s空氣中含有水分，水分隨空氣進(jìn)入后會(huì)在膨脹閥處產(chǎn)生冰堵。工業(yè)氮?dú)鉄o腐蝕性、無水分，且價(jià)格便宜，但瓶裝高壓氮?dú)庖欢ㄒ脺p壓表加注。加壓試漏時(shí)，首先應(yīng)正確連接歧管壓力計(jì)：高壓軟管接在排氣管道上(高壓側(cè))，低壓軟管接在吸氣管道上(低壓側(cè))。將軟管連接在壓縮機(jī)的高、低壓檢修閥上，打開高、低壓檢修閥，向系統(tǒng)中加入干燥氮?dú)馄鋲毫σ话銘?yīng)為1.5MPa左右。當(dāng)系統(tǒng)達(dá)到規(guī)定壓力后，用肥皂液涂在系統(tǒng)的各連接處和焊接處，仔細(xì)觀察有無泄漏。泄漏大的地方有微小聲音，并出現(xiàn)大泡沫，泄漏小的地方，則間斷出現(xiàn)小泡沫，所以檢漏必須仔細(xì)，并反復(fù)檢查3～5次，發(fā)現(xiàn)泄漏處應(yīng)作出記號(hào)并及時(shí)加以修復(fù)，然后再去試漏其他接頭處，直至泄漏徹底排除。修漏完畢，應(yīng)試漏，讓系統(tǒng)保壓24～48h，若壓力不降低，則試漏合格，倘若壓力有明顯降低，必須重新進(jìn)行檢漏，直到找出泄漏處并加以排除為止。上海**制冷劑工廠</p><p style="text-indent:25px">上海冰仆冷暖設(shè)備有限公司位于美丹路222號(hào)629室。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。公司秉持誠信為本的經(jīng)營理念，在化工深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢，打造化工良好品牌。冰仆冷暖設(shè)備秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營理念，全力打造公司的重點(diǎn)競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2436194.html</p></div></div></div></div></div><div id="zoqdace" class="page-right twoColRt"><div id="qvxegsp" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="hm3i2gy" 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 id="oisoqxz" class="recomPic likePro"><a 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