Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 1 (Q.No. 13)
13.
Workdone in a free expansion process is
Discussion:
18 comments Page 2 of 2.
Santosh kumar said:
1 decade ago
No boundary limit so work done is zero.
NITHESH BORKAR said:
1 decade ago
No resistance to offer so work done is zero only when we consider both gas and vacuum as a system, although PdV not equal to zero.
Sanjeev kumar jha said:
1 decade ago
No resistance due to no boundary so the work done is zero, the expansion takes place against the vacuum.
VIVEK said:
1 decade ago
Expansion of a gas in vacuum (pex = 0) is called free expansion.
Work done is zero during free expansion whether the process is reversible or irreversible.
Work done is zero during free expansion whether the process is reversible or irreversible.
Sandip sahane said:
1 decade ago
Work done in free expansion process is zero because of there is no any boundary.
Kanish jamwal said:
1 decade ago
Consider an insulated container divided into two parts, ideal gas is filled in one compartment other is evacuated. When partition is removed gas moved to vacuum there is change in volume but work done is zero vacuum has no resistance.
Susanta said:
1 decade ago
Work done in free expansion process is zero because free expansion means expansion against vacuum, so there is no resistance to move.
Nitin said:
1 decade ago
Work done in free expansion process is zero because there is no boundary move. (free expansion means expansion against vacuum and in this process enthalpy, internal energy and temperature is constant).
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