电冰箱从工作到制冷完成需多少时间

2025-04-05 05:01:38
推荐回答(1个)
回答1:

冰箱在冬天需要花费45分钟的时间从室内环境温度降到指定温度,夏天需要的时间更长一些,但在冰箱有物品且较多的情况下,从运行到完成制冷一般需要两个小时。冰箱制冷的工作原理是蒸发器吸收制冷剂,并将其压缩后送入冷凝器中,在毛细血管内,冷凝器将液化了的制冷剂再传入蒸发器,待蒸发吸热,最后达到制冷。以下为详细步骤:1、绝热压缩:它是利用压缩机吸入蒸发过后,形成了低温抵押的制冷剂,再急剧压缩,将气体的机械工转换为热量,最后转为高温高压的气体。2、等温压缩:压缩机将上述气体传导到冷凝器中,并液化,使其释放出冷凝潜热,但制冷剂的温度并没有变化,只是它的状态由气体变为液体。3、绝热膨胀:处液态状态下的制冷剂在毛细血管中受到节流的作用,使液体的压力降到蒸发的压力,在此途中,制冷剂的温度急剧下降,不过由于时间极短,故不会吸收到外界的热量。4、等温膨胀:进入了蒸发器中的制冷剂迅速的蒸发,并持续吸收冰箱中的热能,直到液化的制冷剂状态全部汽化为止,值得注意的是,在此时间段制冷剂的温度处于恒定状态。

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