任何一套深度冷冻装置,要能连续正常运转,就必须有适当的措施不断制取冷量,以补偿装置在运转过程中的各项冷量损失(如跑冷损失及复热不足冷损等)。在深冷装置中,主要是利用气体的节流以及气体的绝热膨胀来获得低温。 For any deep-freezing unit to be able to operate normally continuously, appropriate measures must be taken to continuously take the cooling capacity so as to compensate for the various cold-loss losses of the unit during operation (such as loss of cooling and recovery, cold loss, etc.) ). In cryogenic plants, low temperatures are mainly achieved by the throttling of the gas and by the adiabatic expansion of the gas.