Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 3 (Q.No. 4)
4.
The change of entropy, when heat is removed from the gas, is negative.
Discussion:
14 comments Page 1 of 2.
Pradeep singh said:
1 decade ago
True only for reversible process. For irreversible process entropy change may be positive even if heat is removed.
Dinakaran said:
1 decade ago
Entropy will not be in negative.
Ankita said:
10 years ago
Entropy will always increase.
Shahil said:
10 years ago
By Ts diagram of a reversible process s2-s1 is negative.
Krishna said:
9 years ago
Change in entropy can be negative but entropy can't be.
Ototo Erick said:
9 years ago
Change in entropy must be negative if temperature is remove and vice versa.
Diwakar Chaurasia said:
9 years ago
Yes @Ototo erick you are right.
The change in entropy can be negative it is possible somehow but the entropy can't be negative anyhow.
The change in entropy can be negative it is possible somehow but the entropy can't be negative anyhow.
Shekhar Ghotekar said:
8 years ago
For a process, entropy can have positive, negative or zero value?
Harsh said:
8 years ago
For reversible process entropy is + ve, - ve, and 0.
For irreversible process always +ve.
For irreversible process always +ve.
Nagendra singh said:
8 years ago
Entropy of system will decrease by removal of heat & increase by adding of heat. But entropy of universe is always increased.
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