Lithium bromide is used as an absorbent in _________.
Lithium bromide is used as an absorbent in Vapour absorption refrigeration.
Basic Vapour Absorption Refrigeration System
The basic absorption cycle employs two fluids, the absorbate or refrigerant, and the absorbent.
The most common fluids are Water/Ammonia as the refrigerant and lithium bromide/ water as the absorbent.
These fluids are separated and recombined in the absorption cycle.
In a Lithium bromide absorption refrigeration system, the refrigeration is water and lithium bromide is the absorber.
The liquid refrigerant/absorbent solution is pumped to a high-operating pressure generator using significantly less electricity than that for compressing the refrigerant for an electric chiller
Heat is added to the high-pressure generator from a gas burner, steam, hot water, or hot gases
The added heat causes the refrigerant to desorb from the absorbent and vaporize
The vapors flow to a condenser, where heat is rejected and condensed to a high-pressure liquid
The liquid is then throttled through an expansion valve to the lower pressure in the evaporator where it evaporates by absorbing heat and provides useful cooling
The remaining liquid absorbent, in the generator, passes through a valve, where its pressure is reduced, and then is recombined with the low-pressure refrigerant vapors returning from the evaporator so the cycle can be repeated.