Chapter 11, Problem 11.21PP

Figure 11.25 depicts gasoline flowing from a storage tank into a truck for transport. The gasoline has a specific gravity of $0.68$ and the temperature is $25°C$. Determine the required depth h in the tank to produce a flow of $1500L/min$ into the truck. Because the pipes are short, neglect the energy losses due to pipe friction, but do consider minor losses.

Note: Figure 11.26 shows a system used to pump coolant from a collector tank to an elevated tank, where it is cooled. The pump delivers $30gal/min$. The coolant then flows back to the machines as needed, by gravity. The coolant has a specific gravity of $0.92$ and a dynamic viscosity of $3.6*{10}^{-5}lb-s/f{t}^2$. This system is used in Problems 11.22 -11.24.