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class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="msi2owo" 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>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>寧波專業(yè)冷凍機(jī)哪家好,冷凍機(jī)</p><p><span>***更新：</span>2021-02-06 12:15:30</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="yow424o" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">溫州佳諾制冷設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>王向坤 / 蔣永要</p><p><span>郵箱: </span>990653603@qq.com</p><p><span>電話: </span>13738735303</p><p><span>傳真: </span>153_</p><p><span>網(wǎng)址: </span>http://www.zlsbwz.com</p><p><span>手機(jī): </span>153-25770900</p><p><span>地址: </span>婁橋街道東耕村吹臺(tái)東路55號(hào)北首</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="a2sig42" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="242kiwu" class="box"><p><p style="text-indent:25px">螺桿式冷凍壓縮機(jī)壓縮比異常：壓縮比針對(duì)知道壓縮機(jī)性能的人員來說并不陌生。螺桿機(jī)與活塞機(jī)的區(qū)別在于，活塞機(jī)只會(huì)欠壓縮，而螺桿機(jī)多出來過壓縮。那么壓縮比值大或小會(huì)出現(xiàn)什么樣的狀況呢？過大或者說壓差過大，證明此系統(tǒng)完全偏離設(shè)計(jì)值，主要的現(xiàn)象有，排溫壓力溫度過高，吸氣壓力偏低，溫度偏高。排氣壓力溫度過高，不良后果主要是對(duì)于系統(tǒng)中的潤滑油易焦化，不宜形成油膜，不能充分潤滑轉(zhuǎn)子，轉(zhuǎn)子得不到有效降溫，潤滑，就會(huì)堵轉(zhuǎn)，進(jìn)而造成電機(jī)損毀。吸氣壓力低，吸氣壓力溫度高則主要影響電機(jī)冷卻，和排氣溫度高，寧波專業(yè)冷凍機(jī)哪家好。其后果基本等同于排氣溫度壓力高。過小主要是影響是濕沖程（潮車，倒霜），螺桿壓縮機(jī)耐濕沖程，寧波專業(yè)冷凍機(jī)哪家好，其實(shí)，螺桿機(jī)更怕濕沖程，如果大量液體回到壓縮機(jī)，就會(huì)造成潤滑油的稀釋，后果等同于排氣溫度偏高。當(dāng)然，寧波專業(yè)冷凍機(jī)哪家好，壓縮比偏小，還有的是轉(zhuǎn)子磨損嚴(yán)重，加減載失靈造成的。對(duì)于冷凍機(jī)中的水冷設(shè)備，要經(jīng)常查檢冷卻水的渾濁度。要經(jīng)常對(duì)冷卻水進(jìn)行必要更換。寧波專業(yè)冷凍機(jī)哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波專業(yè)冷凍機(jī)哪家好,冷凍機(jī)" src="https://tyunfile.71360.com/UploadFile/jianuo/637407885269649292/4062728.png"></div><p style="text-indent:25px">冷凍機(jī)的特性：來自蒸發(fā)器的制冷劑蒸汽先進(jìn)入低壓級(jí)汽缸壓縮到中間壓力，經(jīng)過中間冷卻后再進(jìn)入高壓級(jí)汽缸，壓縮到冷凝壓力進(jìn)入冷凝器中。一般蒸發(fā)溫度在-25℃~-50℃時(shí)，應(yīng)采用雙級(jí)壓縮機(jī)進(jìn)行制冷。制冷系統(tǒng)由蒸發(fā)器、雙級(jí)壓縮機(jī)、油分離器、冷凝器、中間冷卻器、貯氨器、氨液分離器、節(jié)流閥及其它附屬設(shè)備等組成，相互間通過管子聯(lián)接成一個(gè)封閉系統(tǒng)。其中，中間冷卻器利用少量液態(tài)制冷工質(zhì)在中間壓力下汽化吸熱，使低壓級(jí)排出的過熱蒸汽得到冷卻，降低高壓級(jí)的吸氣溫度，同時(shí)還使高壓液態(tài)制冷工質(zhì)得到冷卻。寧波專業(yè)冷凍機(jī)哪家好制冰機(jī)是一種將水通過蒸發(fā)器由制冷系統(tǒng)制冷劑冷卻后生成冰的冷凍機(jī)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波專業(yè)冷凍機(jī)哪家好,冷凍機(jī)" src="https://tyunfile.71360.com/UploadFile/jianuo/637407884999385504/9965719.png"></div><p style="text-indent:25px">冷凍壓縮機(jī)排氣溫度過高的原因有：⑴壓縮機(jī)汽缸中余隙過大。⑵壓縮機(jī)中吸、排氣閥門、活塞環(huán)損壞。⑶壓縮機(jī)安全旁通閥泄漏。⑷壓縮機(jī)吸氣溫度過高。⑸壓縮機(jī)汽缸中潤滑油中斷。⑹壓縮機(jī)吸氣壓力過低或吸氣閥開的過小。⑺壓縮機(jī)吸氣管道或過濾器有堵塞現(xiàn)象，隔熱層保溫層損壞。⑻壓縮機(jī)回氣管道中阻力過大，氣體流動(dòng)速度慢易產(chǎn)生過熱現(xiàn)象，致使排氣溫度升高。⑼冷凍壓縮機(jī)冷凝壓力過高；冷凝器中有油垢或水垢等。⑽壓縮機(jī)缸蓋冷卻水套水量不足；或冷卻水溫度過高。⑾壓縮機(jī)的制冷能力小于庫房設(shè)備能力，如蒸發(fā)面積過大。⑿壓縮機(jī)排氣管道中阻力過大。⒀冷凍壓縮機(jī)節(jié)流閥開啟度過大或堵塞。⒁壓縮機(jī)自身效率差。⒂氨液分離器安裝高度過低。</p><p style="text-indent:25px">冷凍壓縮機(jī)是制冷循環(huán)的動(dòng)力，它由電動(dòng)機(jī)拖動(dòng)而不停地旋轉(zhuǎn)，它除了及時(shí)抽出蒸發(fā)器內(nèi)蒸氣，維持低溫低壓外，還通過壓縮作用提高制冷劑蒸氣的壓力和溫度，創(chuàng)造將制冷劑蒸氣的熱量向外界環(huán)境介質(zhì)轉(zhuǎn)移的條件。即將低溫低壓制冷劑蒸氣壓縮至高溫高壓狀態(tài)，以便能用常溫的空氣或水作冷卻介質(zhì)來冷凝制冷劑蒸氣。制冷冷凝器是一個(gè)熱交換設(shè)備，作用是利用環(huán)境冷卻介質(zhì)(空氣或水)，將來自壓縮機(jī)的高溫高壓制冷蒸氣的熱量帶走，使高溫高壓制冷劑蒸氣冷卻、冷凝成高壓常溫的制冷劑液體。值得一提的是，冷凝器在把制冷劑蒸氣變?yōu)橹评鋭┮后w的過程中，壓力是不變的，仍為高壓。冷凍機(jī)采用變頻裝置，調(diào)節(jié)離心制冷機(jī)壓縮機(jī)的轉(zhuǎn)速低壓的冷媒經(jīng)過離心機(jī)后，壓力升高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波專業(yè)冷凍機(jī)哪家好,冷凍機(jī)" src="https://tyunfile.71360.com/UploadFile/jianuo/637407885145625752/2539954.png"></div><p style="text-indent:25px">冷凍壓縮機(jī)是作為制冷機(jī)中一重要組成部分而與系統(tǒng)中其它部件，如熱交換器，節(jié)流裝置等配合工作而獲得制冷的效果。因此，它的工作能力有必要直觀地用單位時(shí)間內(nèi)所產(chǎn)生的冷量——制冷量來表示，單位為匹它是冷凍壓縮機(jī)的重要性能指標(biāo)之一。為了便于比較和選用，有必要根據(jù)其不用的使用條件規(guī)定統(tǒng)一的工況來表示壓縮機(jī)的制冷量，根據(jù)標(biāo)準(zhǔn)規(guī)定，吸氣工質(zhì)過熱所吸收的熱量也應(yīng)包括在壓縮機(jī)的制冷量內(nèi)。排熱量是壓縮機(jī)的制冷量和部分壓縮機(jī)輸入功率的當(dāng)量熱量之和，它是通過系統(tǒng)中的冷凝器排出的。這個(gè)參數(shù)對(duì)于熱泵系統(tǒng)中的壓縮機(jī)來講是一個(gè)十分重要的性能指標(biāo)；在設(shè)計(jì)制冷系統(tǒng)的冷凝器時(shí)也是必須知道的。冷藏用冷凍機(jī)主要用于在低溫條件下貯藏或運(yùn)輸食品。寧波專業(yè)冷凍機(jī)哪家好</p><p style="text-indent:25px">冷凍機(jī)通過壓縮機(jī)輸入電能，從而將熱量從低溫環(huán)境排放到高溫環(huán)境。寧波專業(yè)冷凍機(jī)哪家好</p><p style="text-indent:25px">冷凍機(jī)產(chǎn)冷量多少，與系統(tǒng)運(yùn)轉(zhuǎn)工況有直接關(guān)系，對(duì)于同一臺(tái)結(jié)構(gòu)，轉(zhuǎn)速，制冷劑種類均已確定的壓縮機(jī)，由于運(yùn)轉(zhuǎn)工況改變，操作管理不同，其產(chǎn)冷量和耗能也隨著變化。 1、隨著蒸發(fā)溫度的降低，壓縮機(jī)的壓縮比增大，單位產(chǎn)冷量耗能增加。當(dāng)蒸發(fā)溫度每降低1℃，則要多耗電3%-4%。因此盡可能縮小蒸發(fā)溫差，提高蒸發(fā)溫度，不但節(jié)約電耗，還可以提高冷間的相對(duì)濕度。 2、隨著冷凝溫度的升高，壓縮機(jī)的壓縮比增大，單位產(chǎn)冷量的耗能增加。冷凝溫度在25℃-40℃之間，每升高1℃，增加耗電量3.2%左右。??? 3、冷凝器和蒸發(fā)器的換熱表面覆有油層時(shí)，會(huì)引起冷凝溫度升高，蒸發(fā)溫度降低，導(dǎo)致產(chǎn)冷量減少和耗電量增加。冷凝器內(nèi)表面上積有0.1mm厚油層時(shí)，將使壓縮機(jī)產(chǎn)冷量下降16.6，耗電量增加12.4；蒸發(fā)器內(nèi)表面上積油0.1mm厚油層時(shí)，為了保持已定的低溫要求，蒸發(fā)溫度就下降2.5℃，耗電量增加9.7%。??? 4、當(dāng)空氣聚集在冷凝器內(nèi)時(shí)，會(huì)引起冷凝壓力升高，不凝結(jié)氣體分壓力達(dá)到1.96105Pa時(shí)，壓縮機(jī)耗電量要增加18%。寧波專業(yè)冷凍機(jī)哪家好</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3193979.html</p></div></div></div></div></div><div id="2mqwuk2" class="page-right twoColRt"><div id="agekawm" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ms4sa2e" 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" 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