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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>蘇州冰龍制冷劑要多少錢,制冷劑</p><p><span>***更新：</span>2020-11-21 02:23:09</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="d3k29qx" 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="o227tcs" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ihe2eah" class="box"><p><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。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。總上所述，蘇州冰龍制冷劑要多少錢，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、流動阻力小，泄漏時(shí)易發(fā)現(xiàn)。其缺點(diǎn)是：有刺激性臭味，蘇州冰龍制冷劑要多少錢、有毒，蘇州冰龍制冷劑要多少錢、可以燃燒和，對銅及銅合金有腐蝕作用。碳?xì)渲评鋭┲饕枪?jié)能和環(huán)保這兩大優(yōu)點(diǎn)；蘇州冰龍制冷劑要多少錢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州冰龍制冷劑要多少錢,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016836011058/5056076.png"></div><p style="text-indent:25px">C02制冷劑：綠色環(huán)保天然工質(zhì)C02以其無毒，對臭氧層與影響，不產(chǎn)生溫室效應(yīng)和良好的熱力學(xué)性質(zhì)等優(yōu)點(diǎn)，再度受到人們的重視。此外，C02給臨界環(huán)境系統(tǒng)所具有的較高的排氣溫度和氣體冷卻器較大的溫度滑移。它在熱泵熱水器領(lǐng)域具有其他工質(zhì)無法比擬的優(yōu)勢。主要優(yōu)勢：①無毒，不可燃。具有很好的安全性。消耗臭氧潛能值ODP=0，全球變暖潛能值GWP=1，有著良好的的經(jīng)濟(jì)性，而不存在回收問題，具有環(huán)境友好性。②物理化學(xué)性能穩(wěn)定。與潤滑油共溶性良好。粘度很低，這樣可以提高流速，壓降不會太大，改善傳熱，進(jìn)一步減小部件尺寸和系統(tǒng)重量。蘇州冰龍制冷劑要多少錢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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州冰龍制冷劑要多少錢,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401017203765055/9581392.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">制冷劑的選用是一個(gè)比較復(fù)雜的技術(shù)經(jīng)濟(jì)問題，需要考慮的因素很多，選擇時(shí)應(yīng)根據(jù)具體情況，進(jìn)行各方面的技術(shù)分析。1.考慮環(huán)保的要求。必須選用符合的各國環(huán)保法規(guī)的制冷劑。2.考慮制冷溫度的要求。根據(jù)制冷劑溫度和冷卻條件的不同，選用高溫（低壓）、中溫（中壓）、低溫（高壓）制冷劑。通常選擇的制冷劑的標(biāo)準(zhǔn)蒸發(fā)溫度要低于制冷溫度10℃。選擇制冷劑還應(yīng)考慮制冷裝置的冷卻條件、使用環(huán)境等。運(yùn)行中的冷凝壓力不應(yīng)超過壓縮機(jī)安全使用條件的規(guī)定值。汽車空調(diào)只能用車外空氣做冷卻介質(zhì)，對其產(chǎn)生影響的氣溫、風(fēng)速、太陽輻射、熱輻射等因素?zé)o不在頻繁發(fā)生變化，其運(yùn)行條件決定它只能選用高溫（低壓）制冷劑。制冷劑是一種在制冷系統(tǒng)中不斷循環(huán)并通過其本身的狀態(tài)變化以實(shí)現(xiàn)制冷的工作物質(zhì)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州冰龍制冷劑要多少錢,制冷劑" src="https://tyunfile.71360.com/UploadFile/bingpu/637401016807993791/1268610.png"></div><p style="text-indent:25px">制冷劑命名方法：(1)無機(jī)化合物，無機(jī)化合物的簡寫符號規(guī)定為R7()。括號表示一組數(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)，它們的簡寫符號規(guī)定為R(m-1)(n 1)(x)B(z)。下圖為一些制冷劑的符號舉例。(3)非共沸混合制冷劑，非共沸混合制冷劑的簡寫符號為R4()。括號表示一組數(shù)字，這組數(shù)字為該制冷劑命名的先后順序號，從00開始。(4)共沸混合制冷劑，共沸混合制冷劑的簡寫符號為R5()。括號表示一組數(shù)字，這組數(shù)字為該制冷劑命名的先后順序號，從00開始。(5)環(huán)烷烴、鏈烯烴以及它們的鹵代物。寫符號規(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。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。蘇州冰龍制冷劑要多少錢</p><p style="text-indent:25px">制冷劑臨界溫度高于冷凝溫度、與冷凝溫度對應(yīng)的飽和壓力不要太高、標(biāo)準(zhǔn)沸點(diǎn)較低、單位容積制熱量較大等。蘇州冰龍制冷劑要多少錢</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(jī)、汽車空調(diào)、中央空調(diào)、除濕機(jī)、冷庫、商業(yè)制冷、冰水機(jī)、冰淇淋機(jī)、冷凍冷凝機(jī)組等制冷設(shè)備中，同時(shí)還可應(yīng)用于氣霧推進(jìn)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(hù)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(jī)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(jìn)行換血式的替換）。蘇州冰龍制冷劑要多少錢</p><p style="text-indent:25px">上海冰仆冷暖設(shè)備有限公司是一家銷售:制拎設(shè)備、化工產(chǎn)品(除危險(xiǎn)化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品)、儀器儀表、汽車配件，機(jī)械配件、五金電器、焊接工具。銷售:制拎設(shè)備、化工產(chǎn)品(除危險(xiǎn)化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品)、儀器儀表、汽車配件，機(jī)械配件、五金電器、焊接工具。的公司，致力于發(fā)展為創(chuàng)新務(wù)實(shí)、誠實(shí)可信的企業(yè)。公司自創(chuàng)立以來，投身于制冷劑廠家直銷，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，是化工的主力軍。冰仆冷暖設(shè)備繼續(xù)堅(jiān)定不移地走高質(zhì)量發(fā)展道路，既要實(shí)現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實(shí)現(xiàn)轉(zhuǎn)型再突破。冰仆冷暖設(shè)備始終關(guān)注化工行業(yè)。滿足市場需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2076324.html</p></div></div></div></div></div><div id="n7t98tq" class="page-right twoColRt"><div id="akcz7eg" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="etl7qxk" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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