Joule Thompson expansion

Input(s)

$\mathrm{R}$: Universal Gas Constant ( $\mathrm{psi} \mathrm{ft}^{3} / \mathrm{K} \mathrm{lbmol}$ )

$C_{p}$: Specific Heat Capacity at Constant Pressure $(\mathrm{J} / \mathrm{lb} \mathrm{K})$

$\left(\frac{\partial Z}{\partial T}\right)_{p}$: Variation of Gas Compressibility Factor w.r.t. Temperature Change at Constant Pressure (1/K)

Output(s)

วT/วp: Joule-Thompson Expansion (K/psi)

Formula(s)

$$ \frac{\partial \mathrm{T}}{\partial \mathrm{p}}=\left(\frac{\mathrm{RT}^{2}}{\mathrm{pC}_{\mathrm{p}}}\right) *\left(\frac{\partial \mathrm{Z}}{\partial \mathrm{T}}\right)_{\mathrm{p}} $$

Reference(s)

Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter:3, Page: 272.