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Unformatted text preview: const . Deduce that, for an adiabatic process (with dS = 0), V T α is constant and, equivalently,
pV γ is constant, where γ = Cp /CV .
4. This question describes the JouleThomson process (also known as the JouleKelvin
process). The ﬁgure shows a thermally insulated pipe which has a porous barrier
separating two halves of the pipe. A gas of volume V1 , initially on the lefthand side
of the pipe, is forced by a piston to go through the porous barrier using a constant
pressure p1 . Assume the process can be treated...
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This document was uploaded on 03/03/2014 for the course DAMTP 1110 at Cambridge.
 Spring '14

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