Toluene is being stored in a 5 m diameter cylindrical tank under a pressure of 400 kPa (absolute). The tank drains through a 2 cm diameter line located 8 m below the liquid level of the tank, you can assume that the pressure at the outlet of this line is 1 atm. Toluene has a density of 870 kg m3 and a viscosity of 0.56 mPa s. Using Bernoulli's equation (or otherwise) estimate the liquid velocity in the drain line when the valve is opened, and hence determine how long it will take for the tank to drain. Comment as to whether or not you will think the tank will actually take more or less time to drain than the value you have calculated.

Toluene is being stored in a 5 m diameter cylindrical tank under a pressure of 400 kPa (absolute). The tank drains through a 2 cm diameter line located 8 m below the liquid level of the tank, you can assume that the pressure at the outlet of this line is 1 atm. Toluene has a density of 870 kg m3 and a viscosity of 0.56 mPa s. Using Bernoulli's equation (or otherwise) estimate the liquid velocity in the drain line when the valve is opened, and hence determine how long it will take for the tank to drain. Comment as to whether or not you will think the tank will actually take more or less time to drain than the value you have calculated.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

Toluene is being stored in a 5 m diameter cylindrical tank under a pressure of 400 kPa
(absolute). The tank drains through a 2 cm diameter line located 8 m below the liquid
level of the tank, you can assume that the pressure at the outlet of this line is 1 atm.
Toluene has a density of 870 kg m-3 and a viscosity of 0.56 mPa s.
Using Bernoulli's equation (or otherwise) estimate the liquid velocity in the drain line
when the valve is opened, and hence determine how long it will take for the tank
drain.
Comment as to whether or not you will think the tank will actually take more or less
time to drain than the value you have calculated.

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