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Applying the Energy BalanceA rigid, insulated tank fitted
Chapter 3, Problem 60P(choose chapter or problem)
A rigid, insulated tank fitted with a paddle wheel is filled with water, initially a two-phase liquid-vapor mixture at \(20 \mathrm{lbf} / \mathrm{in.}^2\), consisting of \(0.07 \mathrm{lb}\) of saturated liquid and \(0.07 \mathrm{lb}\) of saturated vapor. The tank contents are stirred by the paddle wheel until all of the water is saturated vapor at a pressure greater than \(20 \mathrm{lbf} / \mathrm{in}^2\) Kinetic and potential energy effects are negligible. For the water, determine the
(a) volume occupied, in \(\mathrm{ft}^3\).
(b) initial temperature, in \({ }^{\circ} \mathrm{F}\).
(c) final pressure, in \(\mathrm{lbf} / \mathrm{in.}^2\)
(d) work, in Btu.
Questions & Answers
QUESTION:
A rigid, insulated tank fitted with a paddle wheel is filled with water, initially a two-phase liquid-vapor mixture at \(20 \mathrm{lbf} / \mathrm{in.}^2\), consisting of \(0.07 \mathrm{lb}\) of saturated liquid and \(0.07 \mathrm{lb}\) of saturated vapor. The tank contents are stirred by the paddle wheel until all of the water is saturated vapor at a pressure greater than \(20 \mathrm{lbf} / \mathrm{in}^2\) Kinetic and potential energy effects are negligible. For the water, determine the
(a) volume occupied, in \(\mathrm{ft}^3\).
(b) initial temperature, in \({ }^{\circ} \mathrm{F}\).
(c) final pressure, in \(\mathrm{lbf} / \mathrm{in.}^2\)
(d) work, in Btu.
ANSWER:Solution 60P
Step 1 of 7
Here we need to calculate the volume, initial temperature , final pressure and work for the given data of water contained in a rigid and insulated tank fitted with a paddle wheel.
Initially the liquid vapor mixture is at pressure having saturated liquid of
and saturated vapor of mass
.By neglecting the kinetic and potential energy effects we have to calculate the volume
, initial temperature
, final pressure
and work
.