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Characteristic curves for multiple-fan ventilation systems.
Trans Soc Min Metall Explor 1992 Jan; 292:1829-1836
A subsystem-based approach to the characteristic curves for a multiple fan ventilation system is presented. The ventilation variables and their relationships associated with a fan branch are considered as a subsystem of the multiple fan system. For each subsystem, the solution curve is generated by replacing the fan with a hypothetical pressure source or, alternatively, by adding a hypothetical pressure source without removing the fan. The projection of the solution curve onto the coordinate planes results in two classes of subsystem characteristic curves: pressure-vs.-quantity and quantity-vs.-quantity. The subsystem characteristic curves are described and illustrated through example ventilation systems. These curves are also discussed using the network equations of a general multiple-fan system.
Mining; Mining industry; Ventilation systems; Ventilation; Underground mines; Underground mining; Air flow; Analytical processes
MIR 06-93; Grant-Number-G1115151
Transactions of the Society for Mining, Metallurgy, and Exploration
Page last reviewed: June 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division