Sorry about the double post, I had technical difficulties that I was working on and the title of my orginal post got screwed up.(adsbygoogle = window.adsbygoogle || []).push({});

I'm having problems getting started on this one.

A gas undergoes a thermodynamic cycle consisting of 3 processes

process 1-2 compression with pressure(p)*volume(V) = constant, from

[tex]p_{1} = 1 bar[/tex]

[tex]V_{1} = 1.6m^3[/tex]

to

[tex]p_{2} = ?[/tex]

[tex]V_{1} = .2m^3[/tex]

[tex]U_{2}-U_{1}=0[/tex]

process 2-3

Constant pressure to [tex]V_{3}=V_{1}[/tex]

process 3-1

Constant Volume, [tex]U_{1}-U_{3} = -3549kJ[/tex]

There are no significant changes in kinetic or potential energy.

Determine the heat transfer and work for process 2-3 in kJ.

I don't have any problems finding[tex]p_{2}[/tex] or the work needed to compress the gas, but I'm not really sure where to go from there.

[tex]p_2=\frac{p_1V_1}{V_2}[/tex]

[tex]W=\int p dV[/tex]

When I work these out, I end up with 333kJ for W and 8 bar for p2.

If someone could give me a quick push in the right direction, that would be great.

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# Homework Help: Thermodynamic cycle

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