An ideal regenerative cycle is
A. Equal to Carnot cycle
B. Less than Carnot cycle
C. More than Carnot cycle
D. Could be anything
Answer: Option B
Solution (By Examveda Team)
Regenerative Cycle: In a regenerative cycle, some portion of steam is extracted from the turbine and used to heat the feed water before it enters the boiler. This process reduces the irreversibility of the cycle and increases efficiency.Ideal Regenerative Cycle: In its ideal form, regeneration ensures that heat addition takes place at a single temperature, which is the same as in the Carnot cycle. Thus, the efficiency of the ideal regenerative cycle becomes equal to that of the Carnot cycle operating between the same temperature limits.
Why not Less or More: The actual regenerative cycle in practice will always have some losses and hence be less than Carnot efficiency. It can never exceed Carnot efficiency because Carnot represents the theoretical maximum efficiency possible between two temperature limits.
Therefore: For an ideal case, the regenerative cycle is equal to the Carnot cycle.
This Question Belongs to Mechanical Engineering >> Steam Boilers, Engines, Nozzles And Turbines
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Comments (2)
The expansion of steam in a nozzle follows
A. Carnot cycle
B. Rankine cycle
C. Joule cycle
D. Stirling cycle
A. Steam enters and exhausts through the same port
B. Steam enters at one end and exhausts at the centre
C. Steam enters at the centre and exhausts at the other end
D. None of the above
The mechanical draught _________ with the amount of smoke.
A. Increases
B. Decreases
C. Does not effect
D. None of these
A. Higher effectiveness of boiler
B. High calorific value coal being burnt
C. Fouling of heat transfer surfaces
D. Raising of steam temperature
AN IDEAL REGENERATIVE CYCLE IS STIRLING CYCLE WHICH IS A REVERSIBLE ONE SO IT SHOULD HAVE EFFICIENCY EQUAL TO CARNOT CYCLE
A is correct...