Transcription of Chapter 8. Mine Ventilation Thermodynamics
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Chapter 8. Mine Ventilation Thermodynamics Malcolm J. McPherson 1 Chapter 8. Mine Ventilation Thermodynamics INTRODUCTION ..1 COMPONENTS OF THE MINE CYCLE ..2 Elements of the 2 The downcast 2 Example.. 8 Level workings .. 14 Upcast shaft.. 17 Example.. 17 THE COMPLETE MINE CYCLE ..21 Natural Ventilation .. 21 Combined fan and natural Ventilation .. 26 Case Study .. 30 General observations on the table of 32 Polytropic 32 Fan 33 Natural ventilating energy, 33 Natural ventilating pressure. 34 Heat Inclined workings .. 36 Dip 36 Rise Circuit.. 40 The effect of moisture .. 40 BIBLIOGRAPHY ..41 APPENDIX ..42 Survey data from the survey of the shafts used in the examples given in Sections and 42 APPENDIX.
Chapter 8. Mine Ventilation Thermodynamics Malcolm J. McPherson 4 The diagrams that emerge have the appearance of those given in Figure 8.2.
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