A certain fluid at 10 bar is contained in a cylinder behind a piston, the initial volum being 0.05 m. Calculate the work done by the fluid when it expands reversibly: (i) at constant pressure to a final volume of 0.2 m: (ii) according to a linear law to a final volume of 0.2 m' and a final pressure of 2 bar;

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1.1 A certain fluid at 10 bar is contained in a cylinder behind a piston, the initial volume
being 0.05 m'. Calculate the work done by the fluid when it expands reversibly:
(i) at constant pressure to a final volume of 0.2 m:
(ii) according to a linear law to a final volume of 0.2 m'and a final pressure of 2 bar;
43
Utheberrechtlich geschütztes Materi
First Law of Thermodynamics
(iii) according to a law pV = constant to a final volume of 0.1 m':
(iv) according to a law pu = constant to a final volume of 0.06 m';
(v) according to a law, p= (4/V²) – (B/V), to a final volume of 0,1 m³ and a final
pressure of 1 bar, where A and B are constants.
Sketch all processes on a p-v diagram.
(150000 N m; 90000 N m; 34 700 N m: 7640 N m; 19 200 N m)
Transcribed Image Text:1.1 A certain fluid at 10 bar is contained in a cylinder behind a piston, the initial volume being 0.05 m'. Calculate the work done by the fluid when it expands reversibly: (i) at constant pressure to a final volume of 0.2 m: (ii) according to a linear law to a final volume of 0.2 m'and a final pressure of 2 bar; 43 Utheberrechtlich geschütztes Materi First Law of Thermodynamics (iii) according to a law pV = constant to a final volume of 0.1 m': (iv) according to a law pu = constant to a final volume of 0.06 m'; (v) according to a law, p= (4/V²) – (B/V), to a final volume of 0,1 m³ and a final pressure of 1 bar, where A and B are constants. Sketch all processes on a p-v diagram. (150000 N m; 90000 N m; 34 700 N m: 7640 N m; 19 200 N m)
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