2 kg of steam at 0.2 Mpa and 250 C (state1) undergoes the following reversible changes...
2 kg of steam at 0.2 Mpa and 250 C (state1) undergoes the following reversible changes in a series of nonflow processes:
* Compressed adiabatically to 400 C (state 2),
* Heated at constant pressure to 500 C (state 3),
* Expanded isothermally until the specific volume reaches that of state 1 (state 4),
* Cooled at constant volume to state 1 .
a) Show each process in a single P-V diagram,
b) Calculate Q , W , and ΔU for each process and for the entire cycle.
(Answer: For the entire cycle ΔU=0 , Q=-W=132.59 kJ )
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2 kg of steam at 0.2 Mpa and 250 C (state1) undergoes the
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