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Charcoal cooling

Chengappa, Rakshith Mukkatira (2018) Charcoal cooling.

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Abstract:To understand the cooling characteristics of charcoal in the true scale set-up, laboratory scale experiments are to be performed. Two different experimental set-ups were built. One is a small scale set-up representing a layer of charcoal inside a true-scale reactor and the other is large scale set-up, representing a column of charcoal inside the true scale reactor set-up. In both cases a vertically oriented gas flow is applied, the gas acts as cooling medium. For the cooling medium, an oxygen free gas was employed in such a way that it is being recycled, during the course of the experiment. The cooling medium was made from air by reacting the oxygen in the air with a preheated bed of charcoal fines, applying a very slow flow rate. The resulting mixture of nitrogen and carbon-di oxide was stored in the tank of 1 m3 at ambient pressure. Gravity acting on a mass of water was used to induce an accurate flow of cooling medium through the charcoal sample of which the cooling properties were to be assessed. In such set-up experiments are carried out, the cooling characteristics of charcoal are analyzed and the useful observations are reported. The results from both these experiment, helps in estimating the actual time for charcoal cooling in realistic conditions of dimensions such as applicable to the Condensing Retort charcoal manufacturing technology of Clean Fuels B.V. In additional to the lab-scale experiment, an engineering model was developed for selecting a beam with minimum number of support structure using MrReves software developed by Reden. In this assignment, the problem is translated into mathematical model, important knowledge rules are implemented related to the problem, mechanical and heat transfer analysis are performed, user interface is created and based on the results a beam with minimum number of support structure can be chosen. This engineering model assists in designing the commercial condensing retort technology.
Item Type:Internship Report (Master)
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
Keywords:Charcoal Cooling, engineering model, experiment, carbonization.
Link to this item:https://purl.utwente.nl/essays/75470
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