7. If 10 kg/min of air are compressed isothermally from p₁ 96 kPa and V₁ = 7.65 m³/min to p₂ = 620 kPa, find the work, the change of entropy and the heat for (a) nonflow process and b) a steady flow process with v₁ = 15 m/s and v₂ = 60 m/s. Ans. (a)-1370 kJ/min, -5.356 kJ/K.min; (b)-1386.9kJ/ min

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and
7. If 10 kg/min of air are compressed isothermally from p,
= 96 kPa and V₁ = 7.65 m³/min to p, = 620 kPa, find the work,
the change of entropy and the heat for (a) nonflow process and
b) a steady flow process with v₁ = 15 m/s and v₂ = 60 m/s.
1
Ans. (a)-1370 kJ/min, -5.356 kJ/K.min; (b)-1386.9kJ/
min
Transcribed Image Text:and 7. If 10 kg/min of air are compressed isothermally from p, = 96 kPa and V₁ = 7.65 m³/min to p, = 620 kPa, find the work, the change of entropy and the heat for (a) nonflow process and b) a steady flow process with v₁ = 15 m/s and v₂ = 60 m/s. 1 Ans. (a)-1370 kJ/min, -5.356 kJ/K.min; (b)-1386.9kJ/ min
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