ANALYSIS OF AIR DISTRIBUTION AND TEMPERATURE CONDITIONS IN THE DEVELOPMENT TUNNEL OF PT XYZ USING COMPUTATIONAL FLUID DYNAMICS.

• Main Author: Limowa, Agung
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/76688
• Institution: Institut Teknologi Bandung

ventilation system. One of the important stages to consider regarding ventilation system on underground mining is the development stage, because commonly in this kind of stage does not have adequate ventilation facilities, which can lead to various problems such as air distribution and temperature issues. Temperature and air quantity distribution will be modeled using computational fluid dynamics (CFD) as a basis of problem identification and analysis. In this study, three variations of conditions based on the cooling system will be simulated, which cause variations in the inlet temperature. The three variations of conditions are condition 1 which is the natural condition, condition 2 which has a cooling system installed at the portal and condition 3 which has cooling system installed in front of the air intake channel. From the simulation results on working faces, condition 1 which is the natural condition, obtained air quantity between 15.09 - 23.97 m3/s, on condition 2 air quantity ranges between 15.96 - 25.47 m3/s and condition 3 in range between 15.59 - 22.79 m3/s. In the mine haul area, the air quantity obtained is approximately 59.73 - 77.12 m3/s as the flow rate decreases when the incoming air temperature decreases. Based on air temperature simulation obtained that the highest temperature on condition 1 is 32?, condition 2 temperature is 31,09? and condition 3 temperatre is 30,45? with mine haul being the area where the temperature in highest condition. The installation of a cooling system can reduce the temperature by 3-5% in condition 2 and 13-18% in condition 3. Condition 3 is the most ideal condition with an effective temperature of less than 27?, in accordance with the applicable regulations in Indonesia.