Someone suggested that the water-lithium bromide solutions used in the absorptio

Question

Someone suggested that the water-lithium bromide solutions used in the absorption refrigeration system be used to dehumidify humid air. This would be done by bringing a weak solution into contact with humid air. This could be accomplished by spraying the weak solution into the air, for example. As the water in the air is absorbed by this solution, the humidity ratio of the air is decreased. Develop the thermodynamic criterion for the conditions at the weak-solution inlet, humid-air inlet, strong-solution outlet, and humid-air outlet needed for this system to work. Also, determine the need for heat addition or removal.

Explanation / Answer

DISCUSSION:-

> Condition for weak solution inlet --- Weak solution inlet temperature to be around 5 degree celcius

> Condition for humid air inlet --- Temperature to be around 5 to 20 degree celcius

> Condition for strong solution outlet --- Temperature to be around 38 degree celcius

> Condition for humid air outlet --- Temperature to be around 30 to 35 degree celcius

HEAT ADDITION OR REMOVAL - If required, heat be removed by using cooling water in the absorber system.

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