I need help with the steps of this practice problem. Can I get help to solve it ? A piston cylinder device contains 0.8 kg of air initially at 100 kPa, 27 °C. The air is now compressed slowly in a polytropic process during which PV1.3=constant, until the volume reaches 1/2 its original volume. The system is then heated at constant pressure until the volume gets back to its original value. NOTE: THIS IS NOT A CYCLE. Data: Rair = 0.287 kJ/kg K; Cv=0.731 kJ/kg K; Cp=1.018 kJ/kgK. a) DeterminetheamountsANDdirectionsoftheWorkandHeat(each in kJ) for each of the two processes. SHOW ALL WORK used to get your values. b) Sketch the two processes on a P-v diagram, clearly showing all three state points and the two processes with their directions.
I need help with the steps of this practice problem. Can I get help to solve it ?
A piston cylinder device contains 0.8 kg of air initially at 100 kPa, 27 °C. The air is now compressed slowly in a polytropic process during which PV1.3=constant, until the volume reaches 1/2 its original volume. The system is then heated at constant pressure until the volume gets back to its original value. NOTE: THIS IS NOT A CYCLE.
Data: Rair = 0.287 kJ/kg K; Cv=0.731 kJ/kg K; Cp=1.018 kJ/kgK.
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a) DeterminetheamountsANDdirectionsoftheWorkandHeat(each in kJ) for each of the two processes. SHOW ALL WORK used to get your values.
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b) Sketch the two processes on a P-v diagram, clearly showing all three state points and the two processes with their directions.
Consider the diagram shown below for the given processes.
Given data:
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