Page 79 - Advanced Mine Ventilation
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62                                                Advanced Mine Ventilation






















         Figure 5.1A A hypothetical mine layout.


























         Figure 5.1B Linear network analogue of the hypothetical mine.


         3. The volume of diesel exhaust is so small in comparison with the volume of circulating air that
            no change in the latter is anticipated.
         4. Variations in temperature and pressure are insignificant to cause any density change.
            The problem of turbulent dispersion of exhaust from multiple diesel engines in a
         network of roadways can be divided into three parts: (1) solution of the network for
         quantity of air in each branch, (2) emission rates, and (3) calculation of exhaust con-
         centration in each branch and at each junction.
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