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<....../div> <....../div> <....../div> <div class="indexRight1"> <div class="right_topz"> <div class="right_top"><strong>新聞中心<....../strong><span>當前位置:<a href="......../" class="nowadd">首頁<....../a> -> <a href="......../asp....../newslist_nc_id_1.html" class="nowadd">新聞中心<....../a><....../span><....../div> <....../div> <div class="right_content"> <table width="99%" height="80" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td style="border-bottom:1px dashed #CCC;"><div align="center"><h3>水果蔬菜冷庫節能做一下介紹<....../h3><....../div><....../td> <....../tr> <tr><td align="center"><span>發布時間:2015-12-20 10:50:23<....../span><span style="padding-left:20px;">點擊率:<script type="text....../javascript" src="......../asp....../js-newshit_id_27.html"><....../script><....../span><....../td><....../tr> <....../table> <table width="99%" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td align="left" valign="top" class="details">果蔬微型冷庫指的是由組成冷庫的庫板、 制冷機組、蒸發器等在工廠預先制造好,在農產品產地現場安裝后成為裝配冷庫或土建冷庫或半裝配半土建冷庫,且庫容一般小于200立方米,以用于保鮮貯藏的冷庫。按設計溫度分類,果疏微型冷庫屬于高溫冷庫。微型冷庫由制冷系統、庫房、控制系統等組成。在冷庫安裝時通常要注意到以下幾點: <br ....../><....../p> <br ....../><....../p>1.冷庫通過圍護結構的跑冷量與冷藏庫圍護結構單位熱流量成正比。因此,應多在減少冷庫的冷藏庫圍護結構單位熱流量指標方面下功夫。要降低圍護結構單位熱流量,一是保溫材料熱導率要小,二是圍護結構層要厚。但厚度一般不宜太厚,否則會出現增加建造成本和浪費空間等問題。因此,要在合適的厚度范圍內選取保溫材料。通常情況下要求保溫材料熱導率小、吸水率低、耐低溫性能好、成本不能過高等。常用的冷庫保溫材料有稻殼、聚苯乙烯泡沫塑料、聚氨酷硬質泡沫塑料等。稻殼取材方便,但熱阻較小,易吸濕,且用量大,庫體建造費工費時,成本折算其實不低于聚苯乙烯;聚苯乙烯泡沫塑料生產廠家眾多,購取方便,熱阻較大,價格適中,建造安裝方便;聚氨醋硬質泡沫塑料熱阻最大,保溫性能最好,但價格高。 <br ....../><....../p> <br ....../><....../p>2.冷庫圍護結構的防潮和隔汽對冷庫圍護結構采取防潮隔汽措施也是必要的,否則會使保溫材料的保溫性能變差。這也就是冷庫庫體剛開始使用時保溫性能不錯,可是用一段時間以后保溫效果變差的原因。由于水蒸氣是從高溫側向低溫側滲透,因此防潮隔汽層應設在隔熱層溫度高的一側。 <br ....../><....../p> <br ....../><....../p>3.冷庫的蒸發壓力和溫度蒸發溫度與蒸發壓力是相對應的,知道了蒸發壓力后,可通過查表得出蒸發溫度。在冷庫庫房溫度一定的條件下,將溫差(蒸發溫度與庫房溫度的差)縮小,蒸發溫度可以相應地提高,冷庫制冷機的制冷量就會有所提高,也就是循環效率提高了,相應地也節省了電能。 <br ....../><....../p> <br ....../><....../p>4.冷庫融霜操作一般來說,當蒸發器表面上的霜層對空氣的阻力尚不顯著,通過蒸發器空氣的流量尚未減少之前,霜層的影響尚不嚴重,可不必融霜;當空氣的流量明顯減少時,應進行融霜。 空氣的濕度越大、蒸發器溫度與冷庫的庫溫差越大,越容易在蒸發器上結霜,結合保鮮工藝,盡量采用包裝化冷藏可以減少果蔬的干耗,減少蒸發器的融霜次數,實際也起到了冷庫節能的作用。 <br ....../><....../p> <br ....../><....../p>5.不同的果蔬儲藏溫度不同,每種果蔬也都有適合其儲藏的溫度范圍。在不影響果蔬品質的情況下,節能冷庫應選用較高的儲藏溫度。冷庫庫溫高了,制冷系統的蒸發溫度也相應的提高,制冷機的制冷量就會有所提高,循環效率也當然的提高了。提高冷庫庫溫更重要的是還可以減少通過庫體向外的傳熱量。節能冷庫庫房利用率是果蔬實占容積與庫房有效容積的比值。對于微型冷庫的容積利用率一般不低于0.3,當然也不能太高,否則出現降溫困難。對于所要儲藏的果蔬的容積變化較大時,應分隔成兩個或更多的冷庫冷藏間。另外要選擇合理的儲藏周期,這對冷庫的節能是不言而喻的。        更多關于冷庫、醫藥冷庫、冷庫安裝工程、溫濕度監測系統、<a href="http:....../....../www.gzshunjing.com....../" target="_blank"><strong><span style="color:#009900;">中央空調安裝<....../span><....../strong><....../a>工程方面的咨訊,敬請來電:13202023260<....../p><....../td> <....../tr> <....../table> <table width="99%" border="0" align="center" cellpadding="0" cellspacing="0" style="margin-top:10px;"> <tr><td align="left" style="padding-top:5px;border-top:1px dashed #CCC;">上一個:<a href='news_view_id_26.html' class='hui666'>冷藏冷庫壓縮機啟動前準備什么?<....../a><....../td><....../tr> <tr><td align="left">下一個:<a href='news_view_id_28.html' 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