In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that ?
Correct answer: F. Water velocity can be increased conveniently to increase the overall heat transfer co-efficient
- A. Compared to the mass flow rate of cooling water, the rate of condensation of steam is
- B. invariably smaller
- C. Maintaining vacuum on tube side is more difficult than that on the shell side
- D. Condenser can act as a storage unit for condensed steam
- E. because of its lower specific volume compared to steam
- F. Water velocity can be increased conveniently to increase the overall heat transfer co-efficient
Explanation
Cooling water is placed inside the tubes because its velocity can be increased conveniently, which raises the tube-side heat-transfer coefficient and improves condensation performance. Steam condenses on the shell side while maintaining the condenser vacuum.
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