| Summary: | 碩士 === 淡江大學 === 機械與機電工程學系碩士班 === 94 === Different wall-materials of the heating furnace have been studied in this thesis. During the process of baking, the changes of temperature among furnace, sesame and air are simulated by software ANSYS. The content is divided into two parts. The first is an experiment to measure the thermal conductivity of sesame during temperature range from 20 oC to 60 oC by considering two different moistures 3 % and 7 %. The thermal conductivities of the two different moistures 3 % and 7 % are 0.0624 W/moC and 0.0638 W/moC respectively.
The second part is a simulation. Under the same conditions, ANSYS software is chosen to simulate the heating furnaces with four different materials (Carbon steel, Chromium steel, Nickel Chromium steel and Aluminium alloy) and to analyse their temperature fields. From the result, it is shown that the material has a higher thermal conductivity, the result is closer to be required. The thermal conductivities of these four materials make arrangement from large to small : Aluminium alloy > Chromium steel > Carbon steel > Nickel Chromium steel. It is shown that the best material of the heating furnace is Aluminium alloy, and the worst is Nickel Chromium steel.
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