The vented storage tank shown in Fig. P8.90 is used to refuel race cars at a race track. A total of \(40 \mathrm{ft}\) of steel pipe (I.D. \(=0.957 \mathrm{in}\).), two \(90^{\circ}\) regular elbows, and a globe valve make up the system. Calculate the time needed to put \(20 \mathrm{gal}\) of fuel in a car tank. The pressures, \(p_{2}\) and \(p_{1}\), are equal, the connections are threaded, and the fuel has the properties of \(68{ }^{\circ} \mathrm{F}\) normal octane \(\left(u=8.31 \times 10^{-6} \mathrm{ft}^{2} / \mathrm{s}\right)\).

Figure P8.90

Transcribed Image Text:

Vent Patm h = 12 ft Racing fuel (2) P2 Patm