In absorption systems, Lithium-Bromide is used as:

In absorption systems, Lithium-Bromide is used as:

• A. A salt solution
• B. An absorbent (attractant)
• C. A solution that creates a pressure difference
• D. A solvent

Answer: (B)

Absorption systems rely on an absorbent to take up the refrigerant vapor. In this setup, water is the refrigerant and Lithium Bromide serves as the absorbent. The LiBr solution has a strong affinity for water, so when water vapor from the evaporator reaches the absorber, it is absorbed into the LiBr solution. This absorption lowers the vapor pressure in the evaporator, allowing more water to evaporate and continue the cycle. The concentrated LiBr solution is then heated in the generator to release the water vapor, which goes to the condenser and back to the evaporator, while the LiBr is recycled to the absorber to keep absorbing. This is why Lithium Bromide is described as the absorbent (attractant). It’s not the solvent in this cycle; water acts as the refrigerant and the LiBr-water solution provides the absorbing action.

Absorption systems rely on an absorbent to take up the refrigerant vapor. In this setup, water is the refrigerant and Lithium Bromide serves as the absorbent. The LiBr solution has a strong affinity for water, so when water vapor from the evaporator reaches the absorber, it is absorbed into the LiBr solution. This absorption lowers the vapor pressure in the evaporator, allowing more water to evaporate and continue the cycle. The concentrated LiBr solution is then heated in the generator to release the water vapor, which goes to the condenser and back to the evaporator, while the LiBr is recycled to the absorber to keep absorbing. This is why Lithium Bromide is described as the absorbent (attractant). It’s not the solvent in this cycle; water acts as the refrigerant and the LiBr-water solution provides the absorbing action.