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
Discussion:
24 comments Page 1 of 3.
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.
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.
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.
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)
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.
Hence, efficiency order should be Diesel > Dual > Otto.
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.
For the constant pressure and heat input efficiency comparison between cycles--diesel>duel>Otto.
(2)
Krishna said:
1 decade ago
None of the options are correct. It should be Diesel, dual and otto because if you plot a PV diagram you will find diesel has more area then comes dual and then otto.
Imran Ali said:
1 decade ago
Dual cycle, Diesel cycle, Otto cycle it is increasing order.
Otto cycle has high efficiency because of low heat ignition. Is I am right?
Otto cycle has high efficiency because of low heat ignition. Is I am right?
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.
Otto>dual>diesel.
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.
Mayuresh said:
8 years ago
In otto cycle, there is no const. Pressure process then how consider otto cycle efficiency?
Jagmeet said:
5 years ago
And for constant pressure and temperature dual have more efficiency than diesel and otto.
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