• 作者： Wang, Rong-Chi; Wei, Chien-Hua
• 中文摘要： 本研究使用兩種或參種不同大小與密度的粒子混合物在內含一個、兩個與四個噴室的壓克力製噴流床體中探討粒子的流力行為。實驗結果發現，最小噴流速度、最大床壓差、噴流床壓差、移動床壓差不受噴室個數多寡影響。移動床壓差與噴流床壓差成正比，其斜率為1.09。在各噴室不均勻進氣的條件下，最小噴流速度會比均勻進氣時較大。不論單一或多噴流床中，最小噴流速度隨著粒子靜床高、粒子大小、粒子密度以及氣體入口直徑的增大而增加。並且提出用以預測兩種與參種粒子混合物的最小噴流速度之經驗式，其實驗數據與估算值的平均絕對誤差比(AADR)分別為2.59%與2.61%。
• 英文摘要： Hydrodynamic behaviors were investigated in 1, 2 and 4 cells acrylic spouted beds with binary and ternary mixtures of different sizes, densities as the bed materials. The experimental results indicated that the minimum spouting velocity, peak pressure drop, spouting pressure drop and moving pressure drop were all independent of the number of spout cells. The linear relation was observed between the moving and spouting pressure drops to have a slope of 1.09. The minimum spouting velocity was strongly influenced by non-uniform gas inlet of each cell. In single-spout and multiple spouted beds, the minimum spouting velocities increased with increasing the static bed height, particle sizes, particle density and gas inlet diameter. Furthermore, an empirical correlation for the minimum spouting velocity of binary and ternary mixtures was proposed to fit the experimental data with average absolute difference ratios (AADR) to be 2.59% and 2.61%, respectively.
• 中文關鍵字： 多噴流床; 最小噴流黏度; 壓力降; 噴室; 混合物
• 英文關鍵字： Multiple Spouted Bed; Minimum Spouting Velocity; Pressure Drop; Spout Cell; Mixture