For identical operating conditions and surface areas, the capacity ratio of a single-effect to a triple-effect evaporator is_________________?
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Answer: C. 1
Explanation
The capacity ratio remains unity because single-effect and triple-effect systems evaporate comparable water quantities. Operating conditions and overall coefficients stay identical across the comparative evaporator configurations considered. Mathematical definitions of evaporator capacity ratios normalize to one under these specific comparative operational bases. Evaporators remove volatile solvents from solutions by boiling them inside dedicated heat exchange vessels. Single-effect evaporators use fresh steam once whereas multiple effects reuse vapor across multiple stages. Capacity refers to the total mass of liquid vaporized per unit time by the evaporator system.
Industrial chemical processing plants rely on evaporators to concentrate heavy liquors and aqueous solutions. Comparing single and multiple effect setups helps engineers optimize thermal energy consumption and capital costs. Maximizing evaporation capacity reduces plant footprint and improves overall facility economic performance significantly. Option A suggests a capacity ratio of three which incorrectly assumes linear steam economy scaling. Option B proposes a fraction of zero point thirty-three which inverts the actual comparative capacity ratio. Option D offers a value greater than one that contradicts identical operating surface area assumptions.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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