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Mine fire is one of mine's accident which is dangerous and as possible to be avoided. Mine fire is very dangerous because the products of combustion (POC) are toxic gasses in which at specific concentration can make unconscious or die to human. One of the most dangerous gas is Carbon Monoxide (...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/12605 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Mine fire is one of mine's accident which is dangerous and as possible to be avoided. Mine fire is very dangerous because the products of combustion (POC) are toxic gasses in which at specific concentration can make unconscious or die to human. One of the most dangerous gas is Carbon Monoxide (CO), and in this research the focus is a concentration of CO gas produced from mine fire.<p> <br />
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This research is a small scale mine fire, and the material that will be burned is tyre, and do in laboratory with various airflow. The simulation use circle steel pipe with length is 10 m, and diameter 0,1 m. Process of sampling use syringe 60 cc and use bottle with volume is 330 ml as a place for storing gas. After CO gas was taken, the concentration of CO gas measure with CO detector that have 10 % carefulness and range of measuring from 0 to 999 ppm.<p> <br />
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The process transportation of CO gas go on in diffusion with accumulation of concentration in every time. Diffusion coefficient of CO calculated by using Taylor's equation (1953) for laminar flow and Taylor's equation (1954) for turbulent flow. Then the result used to determine concentration of CO gas by using advection-diffusion equation. If concentration-time curve from calculation by using Taylor's equation do not match with concentration-time curve of measuring, we must do back analysis by using diffusion coefficient from trial and error process.<p> <br />
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The results of calculation show that diffusion coefficient from Taylor's equation is match only in laminar flow, but in transition and turbulent flow, the value of diffusion coefficient is match from the result of back analysis process. Concentration-time curve analysis show that advection-diffusion equation can be applied to simulate the CO gas flow along on airways for laminar, transitional and turbulent flows. |
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