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工業生產中制冷設備有哪些作用

2022-10-15

   制冷的主要目的是降低封閉空間和材料的溫度,并保持降低的溫度,有時降低相對濕度。冷卻這個術語通常是指任何自然或人工的散熱過程

以食品工業為例,食品中微生物的生長與溫度密切相關。如果控制溫度,就可以控制微生物的生長。當溫度低于10℃時,微生物的生長速度明顯減慢。冷藏可以降低儲存食物中微生物的產生速度,給我們帶來更加美味和方便的生活體驗。

   在工業生產中,物料的低溫發酵需要在零度或超低溫下進行,這是在室溫下無法完成的,因此制冷環節尤為關鍵什么是制冷系統?制冷系統由壓縮機、冷凝器、節流元件和蒸發器四個基本部件組成。四個主要部件由銅管按一定順序連接,形成一個封閉系統,系統內充有一定量的制冷劑。氟利昂和R22在過去被用作空調的制冷劑以制冷為例,壓縮機從蒸發器中吸出低溫低壓氟利昂氣體,壓縮成高溫高壓氟利昂氣體,流經毛細管,節流成低溫低壓氟利昂汽液兩相,低溫低壓氟利昂液再吸收蒸發器內室內空氣的熱量,變成低溫低壓氟利昂氣體,低溫低壓氟利昂氣體由壓縮機吸入。

   室內空氣通過蒸發器釋放熱量,空氣溫度下降。這樣重復壓縮冷凝節流蒸發的循環,制冷劑不斷地帶走室內空氣的熱量,從而降低制冷系統的室溫。壓縮冷凝節流蒸發是制冷工藝的四大要素,而完成這一工藝的設備就是制冷設備。為了使制冷更加人性化和智能化,現代制冷技術通常增加一些集成模塊來實現智能操作界面、遠程控制和電路保護裝置等一系列功能。


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