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Determine the airflows and pressure drop

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1. A section of a mine has the layout as shown in figure 1 below with airway resistances as marked. If the flow into the mine section is 100 m3/s determine the airflows and pressure drop in each of the branches.

2. If the flow into the section in figure 1 is 200 m3/s determine the airflows in each branch.

26_Determine the airflows and pressure drop.png

Figure1 In the network shown in figure 1, if the airflow required in airway 5-6 is specified as 30m3/s and the airflow in airway 1-2 is unspecified, determine the pressure drop and airflow in each of the airways.

3. In the network illustrated in figure 1, if a fixed pressure fan developing 3 kPa is installed in branch 8-9 what are the flows and pressure drops in each of the branches? Remove the restrictions from the previous question.

4. In the network illustrated in figure 1, if a fan with the characteristic curve listed in figure 2 is installed in branch 8-9 what are the flows and pressure drops in each of the branches? Remove the fan from question 4.

1398_Basic Ventilation Calculations1.png

Figure: Fan Characteristic curve

5. In the network illustrated in figure 1, if a fan with the characteristic curve listed in figure 2 is installed in branch 8-9 and roadways 2-5 and 5-6 are sealed with each having a resistance of 1000 Ns2/m8 what are the flows and pressure drops in each of the branches?

Reference no: EM13318814

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