Interested to Buy Any Domain ? << Click Here >> for more details...
In Rankine cycle there is a concept of Tm(mean temp of heat
addition)For calculating the efficiency of the cycle we
generally use
n=1-T2/T1
again Tm taking into consideration we get
n=1-T2/Tm
as T1>Tm so he efficiency will be different for same cycle.
Can anybody explain how is it possible?
advance appriciation for your effort
- 6 Answers
- 14503 Views
- Sail, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / balajee
in the rankine cycle
t1 is greater and t2 will be lesser in temperature.
therefore the mean temp tm will be less then t1 and greater
than t2.
hence the efficiency will be differ
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / ab_ina7
sorry i didn't get your question...i think (1-t2/t1) is used for reversible cycle like carnot cycle...for rankine cycle
(h1-h2)/(h1-hf4) is used....
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / palash
thanks for the reply Balajee.Yes the efficiency will differ in he two calculations.
But my question was how can there be different efficiency for a same cycle?
Can you help?
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / shubham
n(carnot)=1-t2/t1 which is an ideal cycle.and n(carnot)is grater than n(rankine)both being in ideal condition.so in question u have used a wrong formula for n(rankine)-1 equat.u cannot use this for rankine cycle.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / hisham tariq
eff=1-(T2/T1)---------CARNOT EFFICIENCY (IDEAL CYCLE)
eff=1-(T2/TM)-------------RANKINE CYCLE EFFICIENCY
CARNOT EFF > RANKINE EFF
If you know the rankine cycle and molliers diagram there you will find turbine entry temperature (T1) and economizer entry temperaure (T4). TM is the mean of both values.
PS: eff of rankine cysle can also be calculated by
(h1-h4)/(h2-h3)
Since, h=U+PV and U=TS -PV .So h=TS ,if you plug this guy in above formula with T replaced by Tm yoy gonna get same eff
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / palash dolai
I understand the difference now.All have explained in nicely.
I thought both formula can be used for same cycle.
| Is This Answer Correct ? | 0 Yes | 0 No |
what is the duty & responsibilities of management representative.
What is meant by running clearance?
How cavitation can be eliminated by pump?
I want to model a piezoelectric beam in ansys software.How can I model the electrical circuit and how can I read the general current and voltage produced by the PZ?
What are the advantages of powder metallurgy?
what is meant by one ton Air conditioner, how fast it cool a room.
what is carburateer
What for pyranometer is used ?
what is ALLEN screw?
sir iam doing diploma in mech.engg i need a details of jcb 3dx model plz sent me detal in my email id- rahulchugh33320@gmail.com
what is the difference between sales-men engineer and projet manager engineer??
engine so2 farmula
-
Civil Engineering (5086) - Mechanical Engineering (4456)
- Electrical Engineering (16639)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
