Find the incorrect statement?
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Answer: C. The intercept of the Arrhenius plot is called the ‘activation energy’
Explanation
Orifice baffles are sometimes utilized in specialized shell-and-tube heat exchangers to enhance shell-side turbulence. Claiming that orifice baffles are never used contradicts specialized exchanger design practices for clean fluids. Orifice baffles force shell-side fluid through restrictive openings, increasing local turbulence and heat transfer. Baffles inside shell-and-tube exchangers support tubes and direct shell-side fluids across the bundle effectively. Standard segmental baffles are most common, but disc-and-donut or orifice baffles serve specific engineering needs. Shell-side pressure drop and heat transfer characteristics depend heavily on the chosen baffle geometry.
Specialized chemical reactors and exchangers employ orifice baffles to achieve high shell-side heat transfer coefficients. Thermal design engineers select baffle types based on fluid viscosity, fouling tendency, and allowable pressure drop. Proper mechanical design prevents vibration and ensures long operational lifespans for shell-and-tube units. Pressure drop on the shell side of a heat exchanger depends heavily upon tube pitch and layout configurations. Horizontal tube evaporators incorporate design features to avoid surface blanketing by air and non-condensables. Split ring and pull through floating heads represent two commonly used floating head designs in exchangers.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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