What factors determine the required height of an industrial power plant chimney__________________?
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Answer: C. control of pollution
Explanation
Industrial power plant chimney height is determined primarily based on environmental regulations for controlling local pollution. Tall chimneys elevate exhaust flue gases high into the atmosphere to disperse sulfur dioxide and particulates safely. Effective pollutant dispersion reduces ground-level concentrations and protects surrounding ecosystems from toxic industrial emissions. Chimneys create natural draft pressure to expel exhaust gases, but modern design is dominated by environmental dispersion laws. Air quality dispersion models calculate minimum stack heights required to meet strict government emission standards. Buoyancy forces acting on hot flue gases help propel exhaust plumes upward into higher atmospheric wind currents.
Option A lists draft creation, which was historically important but is now secondary to environmental pollution control. Option B mentions construction limitations, which restrict maximum builds but do not set the primary environmental height. Option D refers to flue gas quantity, which influences diameter and volumetric flow rather than pollution dispersion height.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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