Chemical Engineering - Chemical Engineering Thermodynamics - Discussion
Discussion Forum : Chemical Engineering Thermodynamics - Section 2 (Q.No. 22)
22.
In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when
Discussion:
3 comments Page 1 of 1.
Bijesh said:
8 years ago
n=1 implies isothermal process.
(1)
Vishal said:
7 years ago
In case of compression, isothermal has lower work than adiabatic and vice-versa in case of expansion.
(1)
Aamir said:
1 year ago
@All.
C is wrong. The correct answer is B. The lowest compression work achievable from an initial volume V1 to a final volume V2 is under an isobaric process since its area under the curve in a PV diagram is the smallest (isobaric < isothermal < adiabatic).
Conversely, isobaric expansion can generate the largest amount of work since the area under the curve will be the largest (isobaric > isothermal > adiabatic).
C is wrong. The correct answer is B. The lowest compression work achievable from an initial volume V1 to a final volume V2 is under an isobaric process since its area under the curve in a PV diagram is the smallest (isobaric < isothermal < adiabatic).
Conversely, isobaric expansion can generate the largest amount of work since the area under the curve will be the largest (isobaric > isothermal > adiabatic).
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