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 1 of 3.

Arnab said:   2 years ago
It should be like a diesel dual Otto.
(2)

Prasad Cln said:   5 years ago
For same compression ratio and heat input efficiency comparison between cycles--Otto>duel>diesel.

For the constant pressure and heat input efficiency comparison between cycles--diesel>duel>Otto.
(2)

Jagmeet said:   5 years ago
And for constant pressure and temperature dual have more efficiency than diesel and otto.

Jagmeet said:   5 years ago
At same compression ratio. Otto>dual>deisel.
At max pressure and temp. ie(diesel have max pressure at max compression ratio which is 15:1 and otto will have max pressure at max compression ratio which s 7:1). So here Diesel will have more efficiency than dual.
(2)

Dalvir said:   6 years ago
I think it is about heat addition at constant pressure so duel cycle is Also known as limited pressure cycle so duel, diesel, petrol.

Kumar Singh said:   6 years ago
Otto cycle is more efficient to diesel cycle and dual cycle is always lies b/w otto cycle and diesel cycle then:

Otto>dual>diesel.

Shivam said:   6 years ago
Yes, you are right @Krishna.

Baswa girish said:   7 years ago
Diesel<Dual<Otto.

Mohan said:   7 years ago
Diesel > dual > otto.

For compression ratio the order should be reversed.

Debashis said:   7 years ago
For increasing order:

Diesel> Dual>OTTO.


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