When does the release of heat of solution occur in an ammonia absorption system _____________________?
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Answer: A. ammonia vapour goes into solution
Explanation
The heat of solution is released when ammonia vapor goes into solution inside the absorber. Absorption of gas into a liquid is an exothermic process that liberates thermal energy. This released heat must be continuously removed by cooling water to maintain absorption efficiency. Ammonia absorption systems use water as the solvent to absorb refrigerant ammonia vapor. Exothermic reactions release heat when chemical bonds form between solute and solvent molecules. Managing absorber temperatures is vital for maintaining strong concentration gradients in the cycle.
Industrial absorption chillers rely on effective absorber cooling to maintain low evaporator temperatures. Failing to remove the heat of solution reduces ammonia absorption capacity in the system. Facility operators monitor absorber cooling water flows to ensure stable plant performance. Driving ammonia vapor out of solution occurs in the generator and requires heat input. Lithium bromide mixes with water rather than ammonia in standard absorption chiller setups. Weak and strong solution mixing does not describe the primary gas dissolution heat release.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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