... , such as CO2 main system, refrigeration system, hot water constant temperature system, CO2secondary system , air elimination and clean system and ... are: 1)To ensure the temperature of CO2 achieves the extract temperature and separation temperature. 2)To ensure the CO2` ... tank:CO2 storage. 2. Refrigeration system: 3.Hot water constant temperature system: 4.Electric instruments control: 5.Safty: 6.CO2 ...