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Engineering and Tech / Fundamentals of Engineering Thermodynamics 7 / Chapter 3 / Problem 12P

Fundamentals of Engineering Thermodynamics | 7th Edition | ISBN: 9780470495902 | Authors: Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey

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QUESTION:

For each case, determine the specified property at the indicated state. Locate the state on a sketch of the T-v diagram.

(a) Water at \(v=0.5 \mathrm{~m}^3 / \mathrm{kg}, p=3\) bar, determine T, in \({ }^{\circ} \mathrm{C}\).

(b) Ammonia at \(p=11 \mathrm{lbf} / \mathrm{in}^2, T=-20^{\circ} \mathrm{F}\), determine v, in \(\mathrm{ft}^3 / \mathrm{lb}\).

(c) Propane at \(p=1 \mathrm{MPa}, T=85^{\circ} \mathrm{C}\), determine v, in \(\mathrm{m}^3 / \mathrm{kg}\).

Questions & Answers

QUESTION:

For each case, determine the specified property at the indicated state. Locate the state on a sketch of the T-v diagram.

(a) Water at \(v=0.5 \mathrm{~m}^3 / \mathrm{kg}, p=3\) bar, determine T, in \({ }^{\circ} \mathrm{C}\).

(b) Ammonia at \(p=11 \mathrm{lbf} / \mathrm{in}^2, T=-20^{\circ} \mathrm{F}\), determine v, in \(\mathrm{ft}^3 / \mathrm{lb}\).

(c) Propane at \(p=1 \mathrm{MPa}, T=85^{\circ} \mathrm{C}\), determine v, in \(\mathrm{m}^3 / \mathrm{kg}\).

ANSWER:

Part (a)

Step 1 of 9:

We are going to determine the temperature of the water at the given pressure. In addition to that, we need to plot the p-v diagram.

The specific volume v = 0.5 m3/kg

The pressure p = 3 bar

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