Mechanical Engineering - Thermodynamics - Discussion

Discussion Forum : Thermodynamics - Section 5 (Q.No. 20)
20.
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order
Dual cycle, Diesel cycle, Otto cycle
Otto cycle, Diesel cycle, Dual cycle
Dual cycle, Otto cycle, Diesel cycle
Diesel cycle, Otto cycle, Dual cycle
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
24 comments Page 2 of 3.

Girraj said:   8 years ago
You are right @Krishna.

Prashnt said:   8 years ago
Yes, agree @Basha Khan.

Basha khan said:   8 years ago
Option is not correct,

Otto cycle is more efficient then other two cycles i.e. dual and diesel cycle.

Efficiency of dual cycle is more then of diesel cycle but less then Otto cycle.

So high efficiency is Otto cycle.

Least efficiency is diesel cycle.

Otto >dual >diesel cycles.

Om Nagar said:   8 years ago
Desel >Dual > Otto.

Mayuresh said:   8 years ago
In otto cycle, there is no const. Pressure process then how consider otto cycle efficiency?

Amit said:   9 years ago
Diesel > Dua l> Otto.

Varun said:   9 years ago
Diesel > dual > otto.

Manish Aggarwal said:   9 years ago
The efficiency of Dual cycle always lies in between that of Otto cycle and Diesel cycle. For same maximum pressure and heat input, heat rejection in Otto cycle is maximum and Diesel cycle is minimum.

Hence, efficiency order should be Diesel > Dual > Otto.

Arif said:   9 years ago
It should be in descending order like otto, dual and diesel.

Xaurav said:   9 years ago
It should be Diesel < Dual < Otto.


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