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介紹下高低溫試驗箱機械制冷系統冷卻方式

發布日期:2022-04-26 點擊率:80

1、空氣冷卻

1)適用小功率制冷系統;

2)安裝時室內會影響室內環境溫度,室內要安裝空調或者通風系統,如果室內環境度較高,制冷效率降低較明顯,極限溫度會受到影響;

3)安裝在室外受環境溫度影響大,需要定期清理換熱器,夏天時制冷效率降低較明顯,北方地區需要對散熱風扇控制,防止液體過冷;

2、水冷冷卻

1)適用大功率制冷系統;

2)需要額外配置冷卻水塔、水泵,連接水塔與試驗箱之間的管路;

冷卻水塔分為以下幾種:

開放式水塔(成本低,易臟,效率高、維護周期短)

封閉式水塔(成本中,潔凈,效率中,維護簡單周期長)

冷水機(成本高,體積小,冷卻效果好,耗能大,專業維護,可放置在室內)

蓄水池(防結冰(北方常用),難維護,冷卻效果取決水池大小和環境溫度)

直排(浪費)

3)冷卻效果較風冷好;

4)受環境溫度較??;

 

當然試驗箱制冷方式也可以選擇液氮、液態二氧化碳等介質直接降溫;

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