Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 1 (Q.No. 18)
18.
The entropy __________ in an irreversible cyclic process.
Discussion:
36 comments Page 3 of 4.
SUNEEL SINGH CHAUHAN said:
10 years ago
We know that entropy increase due to heat. So irreversible process lot of heat generate due to friction so its increase.
Vikram singh said:
1 decade ago
Entropy is less than 0 in irreversible process.
Akash said:
1 decade ago
Entropy is a property. It does not depend on path. When final and initial points are same then entropy will be zero, be it reversible or irreversible.
Shibunath said:
1 decade ago
They said increased or decreased they did not mention less than zero or more than zero.
Deep patel said:
1 decade ago
As per the clausius statement dQ/T <= 0 for irreversible cyclic process. i.e., entropy is always less than zero.
Anil said:
1 decade ago
Entropy of system depend on two factor 1st one is heat interaction. 2one is molecular disorder like friction due to intermolecular reaction.
In reversible system may increase or decrease.
In reversible system may increase or decrease.
Biswaranjan Biswal said:
1 decade ago
For a cyclic process entropy change is always less than or equal to zero.
MD MOBIN ALAM said:
1 decade ago
Low grade energy divided into two part available energy and unavailable energy. The unavailable energy is not use in the system. This UAE is called entropy and entropy is always increases.
Haridas Bhuse said:
1 decade ago
Entropy is nothing but disorder in process e.g. Suppose we suppy 1j energy to system then it gives less work i.e. less then 1j.
Najin K said:
1 decade ago
In an irreversible process the entropy of the "system" may increase, decrease or remain constant but it always increases for the "universe" (increase in entropy principle).
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