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Mine Ventilation Laboratory

The laboratory devoted to mine ventilation is extremely well equipped for both, research and instruction.

Therefore, the main goal of this laboratory is to give the student hands-on experience with ventilation instrumentation and to support instruction in ventilation theory. The laboratory has a series of wind tunnels, ducting and instrumentation for measuring airflow and air quality. A number of computer packages are available for comparing simulation output with laboratory experiences. These packages are sufficient for full-scale mine ventilation network analysis.

Airflow Studies
A low-turbulence wind tunnel with 400-mm by 400-mm measuring chamber, velocity range of 0-13 meters per second (for anemometers calibration); axial fan testing stand, including a 30-inch diameter wind tunnel, consisting of a 34-inch adjustable pitch axial fan, a 25-horsepower motor speed driver, with a computerized monitoring and control system, to allow for the remote monitoring of the fan performance and control of the fan speed and blade pitch; auxiliary tubing ventilation system consisting of 150 feet of reinforced 18-inch diameter tubing network combined with two 21-inch diameter auxiliary axial fans that can be connected in series or parallel; climatic simulation unit that demonstrates the sensitivity of phychrometric parameters of the underground environment; physical model of a mine ventilation network based on four-inch plastic pipe (to perform ventilation survey); precision smoke tunnel. Face ventilation systems can be studied using specially design scaled physical models equipped with the laser Particle Image Velocimetry (PIV) measuring system.

Airflow Measurements: Hot-wire anemometers, vane anemometers (both mechanical and electronic), Pitot tubes.

Pressure: incline manometer, portable precision manometer (range of 1.0 N/m2).

Absolute pressure: mechanical barometers (aneroids), electronic absolute pressure gauges.

Air Quality: Instrumentation is available for the following gasses: CO, CH4, O2; coal dust analysis: gravimetric, light-scattering miniram.