The Study of the Flow Effects within a Heating Furnace

• Main Authors: Jiun-De Wu, 吳俊德
• Other Authors: Chen-Shyong Yen
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/19363812135261651676

碩士 === 淡江大學 === 機械與機電工程學系碩士班 === 94 === The air flow effects within a heating furnace are studied and analyzed in this thesis. The content includes: 1. To measure the relationship between thermal conductivity and temperature while sesame moisture rate is maintained at 8% . 2. To study the various velocity effects in temperature fields and flow fields. 3. Under the same velocity and the total heat flux conditions, to study the effects in temperature field and flow field by changing the heat flux distribution. When temperature rang is 20℃~62℃, and the sesame moisture rate is 8%, the thermal conductivity of sesame is measured as: K=0.0344+0.00056T The software ANSYS based on Finite Element Method is chosed to analyze the thermal and the flow effects within a heating furnace. It is shown that when heat flux is kept the same, the higher the velocity, the difference between maximum and minimum temperature within furnace is reduced. While velocity of air is kept the same, the effects of heat flux distribution on the temperature and the flow fields are negligible. We conclude that the effects due to air velocity within the furnace are the most important.