Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 1 (Q.No. 18)
18.
The entropy __________ in an irreversible cyclic process.
Discussion:
36 comments Page 1 of 4.
Satz said:
1 decade ago
What's meant by entropy?
Prasad said:
1 decade ago
Entropy is the disorder of anything.
For reversible cycle change in entropy is = 0.
For irreversible process change in entropy > 0.
If entropy < 0 then the process is impossible.
Nature always works in increasing entropy. Its linked to 2 nd law of thermodynamics as well.
For reversible cycle change in entropy is = 0.
For irreversible process change in entropy > 0.
If entropy < 0 then the process is impossible.
Nature always works in increasing entropy. Its linked to 2 nd law of thermodynamics as well.
Bipin said:
1 decade ago
The meaning of decreasing entropy is not means that it becomes less than zero. It may be remains greater than zero and also greater than 0.
ANUPAM ADARSH MISHRA said:
1 decade ago
Entropy is a property and for any cyclic process change in property becomes Zero doesn't matter if it's being carried reversibly or irreversibly.
Venkat said:
1 decade ago
Irreversible means factors are not restored like heat. Hence for irreversible processes entropy increases.
BKrish said:
1 decade ago
Entropy will increases addition of heat and decreases with removal of heat?
Is this statement is right? if yes, why?
Is this statement is right? if yes, why?
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).
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.
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.
Biswaranjan Biswal said:
1 decade ago
For a cyclic process entropy change is always less than or equal to zero.
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