A substance has the following physical properties at a certain pressure: Saturation temperature, (t_{s}=76^{circ} mathrm{C} ; h_{mathrm{fg}}=61.1

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A substance has the following physical properties at a certain pressure:

Saturation temperature, \(t_{s}=76^{\circ} \mathrm{C} ; h_{\mathrm{fg}}=61.1 \mathrm{~kJ} / \mathrm{kg}\)

\(c_{p(\text { liquid })}=0.21 \mathrm{~kJ} / \mathrm{kg} \mathrm{K} ; c_{p \text { (vapour) }}=0.14+0.00036 T \mathrm{~kJ} / \mathrm{kg} \mathrm{K}\), where \(T=\) temperature in \(\mathrm{K}\)

Determine the enthalpy and entropy of superheated vapour at \(150{ }^{\circ} \mathrm{C}\) assuming these properties are zero for the fluid in liquid state at \(-40{ }^{\circ} \mathrm{C}\).

[106.10 kJ/kg; \(0.31348 \mathrm{~kJ} / \mathrm{kg} \mathrm{K}\) ]

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Related Book For  answer-question

Advanced Thermodynamics For Engineers

ISBN: 9780080999838

2nd Edition

Authors: D. E. Winterbone, Ali Turan

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