Question

Consider the following for a steam turbine power plant: I. Reduction in blade erosion II. Increase in turbine speed III. Increase in specific output IV. Increase in cycle efficiency Which of these occurs due to reheating of steam? (a) Only I (b) $\mathrm{I}$ and II (c) IIII, and IV (d) II and III

Name: Problem 17, Chapter 4: Thermal Engineering
Uploaded: 2021-12-03T17:41:11-08:00
Duration: 1 min 2 s
Channel: Hunza Gilgit
Description: Consider the following for a steam turbine power plant: I. Reduction in blade erosion II. Increase in turbine speed III. Increase in specific output IV. Increase in cycle efficiency Which of these occurs due to reheating of steam? (a) Only I (b) I and II (c) IIII, and IV (d) II and III

   Consider the following for a steam turbine power plant:
I. Reduction in blade erosion
II. Increase in turbine speed
III. Increase in specific output
IV. Increase in cycle efficiency Which of these occurs due to reheating of steam?
(a) Only I
(b) $\mathrm{I}$ and II
(c) IIII, and IV
(d) II and III

Thermal Engineering

TSadhu Singh,… 1st Edition

Chapter 4, Problem 17

Instant Answer

Solved by Expert Hunza Gilgit

12/03/2021

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This process is done to increase the efficiency of the power plant and to increase the specific output of the turbine. Show more…

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Consider the following for a steam turbine power plant: I. Reduction in blade erosion II. Increase in turbine speed III. Increase in specific output IV. Increase in cycle efficiency Which of these occurs due to reheating of steam? (a) Only I (b) $\mathrm{I}$ and II (c) IIII, and IV (d) II and III

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Key Concepts

Cycle Efficiency

Cycle efficiency in a thermodynamic process measures the ratio of work output to the heat input. The reheat cycle enhances cycle efficiency by reducing irreversibilities and improving the expansion process, leading to a better use of energy in the cycle.

Reheat Cycle

A reheat cycle is a modification in steam power plants where steam, after partial expansion in the turbine, is reheated before it is fed into the next stage. This process helps in reducing moisture at the later stages and improves the steam properties for further expansion.

Specific Output

Specific output is the work produced per unit mass of steam passing through the turbine. By using a reheat cycle, the steam’s energy is utilized more effectively, thereby increasing the overall work output per unit mass.

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