Question

In a steam power plant, what is the outcome of regenerative feed water heating? I. Increase in specific output II. Increase in cycle efficiency III. Improved quality of exhaust steam IV. Reduced condenser load Select the correct answer using the code given below: (a) I and III only (b) II only (c) II and IV (d) I, II and III

Name: Problem 11, Chapter 4: Thermal Engineering
Uploaded: 2021-12-03T09:46:38-08:00
Duration: 59 s
Channel: Hunza Gilgit
Description: In a steam power plant, what is the outcome of regenerative feed water heating? I. Increase in specific output II. Increase in cycle efficiency III. Improved quality of exhaust steam IV. Reduced condenser load Select the correct answer using the code given below: (a) I and III only (b) II only (c) II and IV (d) I, II and III

   In a steam power plant, what is the outcome of regenerative feed water heating?
I. Increase in specific output
II. Increase in cycle efficiency
III. Improved quality of exhaust steam IV. Reduced condenser load Select the correct answer using the code given below:
(a) I and III only
(b) II only
(c) II and IV
(d) I, II and III

Thermal Engineering

TSadhu Singh,… 1st Edition

Chapter 4, Problem 11

Instant Answer

Solved by Expert Hunza Gilgit

12/03/2021

Step 1

This process is done to improve the thermal efficiency of the plant. Show more…

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In a steam power plant, what is the outcome of regenerative feed water heating? I. Increase in specific output II. Increase in cycle efficiency III. Improved quality of exhaust steam IV. Reduced condenser load Select the correct answer using the code given below: (a) I and III only (b) II only (c) II and IV (d) I, II and III

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Key Concepts

Cycle Efficiency

By preheating the feedwater with extracted steam, the energy input is utilized more effectively, increasing the average temperature of heat addition. This leads to a reduction in fuel consumption for a given output, thereby enhancing the thermal efficiency of the cycle.

Regenerative Feedwater Heating

This process involves extracting steam from intermediate turbine stages to preheat the feedwater before it enters the boiler. This recovery of heat increases the average temperature at which heat is added to the cycle and reduces the heat loss, thereby improving overall performance.

Condenser Load

Since the feedwater enters the boiler at a higher temperature due to regenerative heating, the excess heat that needs to be rejected in the condenser is reduced. This lowered heat rejection decreases the load on the condenser, improving overall system performance.

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