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1. A section of a mine ventilation system is connected together as shown in the diagram below, if the pressure drop across the system is 3 kPa and the resistances are as indicated determine the flow in each airway.

1820_Determine the required ventilation flow rate.png

2. Define Kirchoff's first and second laws.

3. A mine has a total airflow requirement of 248m³/s. If the equivalent resistance of the workings is 0.45 Ns²/m⁸ determine the pressure to be developed by a single mine fan to ventilate the workings.

4. A working area of a mine has diesel equipment operating within it. The maximum diesel loading is 450 kW. The same section of the mine also has a methane inflow of 0.65 m³/s flowing into it. If the maximum permissible methane concentration in the general body of the air is 1% and the design diesel air quantity is 6 m³/s per 100 kW of installed diesel power, determine the required ventilation flow rate for the working area.

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Category:- Other Engineering
Reference No.:- M91095750

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