# Mechanical Engineering - Thermodynamics - Discussion

### Discussion :: Thermodynamics - Section 1 (Q.No.22)

22.

The efficiency of Stirling cycle is __________ Carnot cycle.

 [A]. greater than [B]. less than [C]. equal to

Explanation:

No answer description available for this question.

 Bikram Tripathy said: (Aug 26, 2013) The efficiency of stirling cycle is less than carnot cycle because the questions not given at which temperature limit. Means if the input temperature is same for both the cycle then the efficiency is same for both the cycle and it must be in reversible condition.

 Shiv Prakash Dadhich said: (Oct 1, 2013) Carnot cycle is ideal cycle. The efficiency is maximum in this cycle. Stirling cycle is have less efficiency.

 Pawan Prasad said: (Nov 11, 2013) Carnot cycle is more efficient than stirling.

 Paresh B said: (Nov 18, 2013) Yes Carnot cycle has equal efficiency to Stirling but when the temperature limits are not considered.

 Sarthak Singari said: (Nov 28, 2013) Dear @Pawan and @Paresh, Stirling Cycle efficiency is equal to Carnot Cycle efficiency when both are working with same temperature limit.

 Sudarsan said: (Dec 31, 2013) The efficiency of regenerative stirling cycle is equal to Carnot efficiency.

 Dhirendra Gupta said: (Jan 8, 2014) Carnot cycle is more efficiency of the stirling cycle.

 Tarun Sahoo said: (Jan 8, 2014) Efficiency of Carnot cycle is equal to that of Stirling (when re generated) otherwise Carnot has more efficiency.

 Mayur said: (Feb 5, 2014) Carnot cycle is maximum efficient cycle compared to all the cycle since the conditions are ideal and there will be no losses.

 Dantes said: (Feb 6, 2014) Carnot cycle is more efficient than Stirling cycle.

 Piyush said: (Jun 22, 2014) In a special case efficiency of both the cycle is equal otherwise carnot cycle is more efficient. Therefore option A should be correct.

 Kumaresan said: (Jun 24, 2014) Carnot cycle says 100% efficiency. But stirling cycle have some heat losses are there. So how to say equal efficiency?

 Ajayraj Solanki said: (Aug 14, 2014) Equal efficiency to carnot cycle and Stirling cycle.

 Gautam said: (Sep 28, 2014) Regenerative striking cycle has the same efficiency as the Carnot cycle.

 Pawan Tiwari said: (Feb 19, 2015) Efficiency of sterling cycle is equal to Carnot cycle under the assumption that effectiveness of heat ex changer use in sterling engine must be 1.

 Rohit Kumar said: (Mar 21, 2015) The efficiency of Stirling cycle is equal to Carnot cycle. This is due to the fact that the cycle is reversible and all reversible cycles have the same efficiency. Ex: Carnot, Stirling, Ericsson.

 Pankaj Babu said: (May 25, 2015) Efficiency of the striking cycle is less than Carnot but efficiency of regenerative striking cycle is equal to Carnot cycle.

 David said: (Jul 3, 2015) Carnot cycle is also know as striking cycle. So the answer is equal efficiency.

 Kaushal Kishore said: (Jul 24, 2015) In of regenerative arrangement, the efficiency of Stirling is equal to Carnot otherwise it less than Carnot.

 Sandeep. said: (Aug 22, 2015) Equal but at same temperature range.

 Chandan said: (Sep 1, 2015) Less than should be the correct answer.

 Hanmant Jangale said: (Sep 23, 2015) Efficiency of carnot cycle is maximum than any other cycle because it is ideal gas cycle! irrespective of that all cycles are considered.

 R.M. Goswami said: (Jan 6, 2016) At same temperature limit their efficiency will be equal.

 Srk said: (Jan 11, 2016) Carnot always efficient.

 Amit Kr. said: (Feb 3, 2016) Efficiency are same but temperature of both cycle is same.

 Anuruddh said: (Mar 24, 2016) All reversible process have the same efficiency. Carnot = Ericsson = Stirling.

 M.Shata said: (Apr 14, 2016) Carnot cycle is an ideal cycle. The efficiency is maximum in this cycle. Stirling cycle is have less efficiency.

 Manvendra Singh Udawat said: (Jul 4, 2016) The efficiency of stiring is less than carnot cycle but the regenrative of stiring have equal efficincy as carnotcycle.

 Logan said: (Aug 19, 2016) Stirling cycle has less efficiency than Carnot cycle. But regenerative Stirling cycle has the same efficiency as Carnot cycle.

 Mujahiddin said: (Aug 20, 2016) What is a Stirling cycle?

 Shivam said: (Aug 31, 2016) Stirling cycle has less efficiency than Carnot because of heat transfer at constant volume. However, if regenerative Stirling cycle is considered then the efficiency of two is equal.

 Sangatisurendrareddy said: (Sep 13, 2016) What is the difference between stirling and regenerative stirling cycle?

 Nithin Varma said: (Sep 30, 2016) I think Carnot. How was Stirling Explain?

 Anitha said: (Nov 30, 2016) What is stirling cycle? Please anyone explain it.

 Janakraj said: (Jan 30, 2017) Please explain stirling and carnot cycle with graph.

 Jitu Shasini said: (Mar 9, 2017) When Regenerator used in the stirling cycle then the efficiency of Carnot cycle = Stirling cycle.

 Santosh said: (Jun 12, 2017) Thermal efficiency of these cycles less than that of a Carnot engine operating within the same limits of temperature.

 Vijay said: (Jun 26, 2017) The Carnot cycle, which is a theoretical rather than a practical cycle, has the maximum possible efficiency of any cycle. There is a theoretical Stirling cycle that is also reversible, which means that it would have the same efficiency as the Carnot cycle. However, neither cycle can be realized in the real world, so a real Stirling cycle will have a lower efficiency than the theoretical Carnot cycle.

 Shivkumar Talghat said: (Aug 18, 2017) Carnot cycle is equal to Stirling cycle when temp not considered in this case.

 Muruga said: (Sep 20, 2017) Both are ideal cycle, so the efficiency also same.

 Sanjeev said: (Jan 16, 2018) Stirling cycle efficiency would be equal to carnot cycle efficiency, when there is complete (ideal) regeneration of heat being rejected at costant volume process.

 Yash Panchal said: (Apr 6, 2018) Please clarify the answer by using equation.

 Kiruba said: (Jun 21, 2018) Please clarify the answer by using equation.

 Sohan said: (Aug 27, 2018) Stirling cycle less efficient than carnot cycle but if regenerative reversible stirling cycle is used then the efficiency is equal to carnot cycle efficiency.

 Nagarajan said: (Oct 7, 2018) Carnot is more efficient.

 Anupriya Gupta said: (Dec 29, 2018) Cornot cycle is more efficient than sterling cycle.

 Arvind said: (Jan 27, 2019) But the question is asked in a general case. So the answer should be less than, right?

 Dwaipayan said: (Feb 24, 2019) Only when regeration is employed. If the heat rejection during constant volume process is consumed wholly in the heat addition (also const. Vol) process, needless to mention, both being reversible, then the area under heat rejection curve and that for heat addition curve are congruous. This will give the efficiency [1-(T2/T1)]. T2 the lowest temp of the cycle and T1 the highest one.

 Ashish Patel said: (Jun 1, 2019) The efficiency of the Stirling cycle is as same as the Carnot cycle efficiency. Practically it is not that easy to build a Heat Exchanger to operate continuously at that much high temperatures. This is the major difficulty in the Stirling Engines. So these became obsolete after the introduction of an Otto cycle and the diesel Cycles.

 Shivangi said: (Jun 22, 2019) Due to heat transfer at constant volume processes, the efficiency of the Stirling cycle is less than that of the Carnot cycle. But the regenerative Stirling cycle has the same efficiency as the Carnot cycle.

 Satkar said: (Aug 5, 2019) What is stirling cycle?

 Utkarsh said: (Aug 31, 2019) For regenerative cycle efficiency of carnot cycle = efficiency of stirling cycle.

 Ram said: (Sep 29, 2019) That Carnot is more efficient than Stirling. But the answer is given that both efficiencies are the same.

 Ajay Kumar said: (Oct 26, 2019) - Carnot cycle. Efficiency = 1-T2/T1. - Stirling cycle. Efficiency = 1-T2/T1. As you saw, the efficiency formula of both cycles are same, so efficiency of Carnot and Stirling cycle is equal.

 Mohit said: (Jan 14, 2020) Carnot cycle is the most efficient one.

 Venky said: (Jan 27, 2020) If regenarator is used then the efficiency of stirling cycle is equal to carnot cycle otherwise the efficiency is less.