Lithium Bromide ( LiBr) absorption refrigeration system water is used as refrigerant and Lithium Bromide is used as Absorbent. Lithium Bromide (LiBr) is a hygroscopic salt (Hygroscopic is the ability to attract and hold water from the surrounding). Water is absorbed by Lithium Bromide/water solution and drive off by using heat (Steam). As water is used in the absorption refrigeration system as refrigerant, so as the freezing point of water zero degree Celsius, so always keep the refrigeration temperature above zero degree. Application: In industries where lower temperature is needed.