Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 50 6 2019 02 20 New Design of Cross-flow Fluidized Bed Dryers New Design of Cross-flow Fluidized Bed Dryers 1351 1360 1763 10.22060/mej.2017.12564.5367 FA T. Zoghi Engineering Faculty, Islamic Azad University North Tehran Branch, Tehran, Iran S. Shahhoseini Department of Chemical Engineering, Iran University of Science & Technology, Tehran, Iran K. Nosrati Department of Chemical Engineering, Iran University of Science & Technology, Tehran, Iran Journal Article 2017 02 22 <span>Drying process demands high power consumption due to the low efficiency of this process in the industries. Therefore, modeling and simulation of dryers in order to optimize them and to design more efficient dryers is necessary. In this research, a cross-flow fluidized bed dryer has been simulated in order to evaluate a new design of the dryer. A mathematical model has been used to predict outlet solid moisture and temperature as well as outlet air humidity and temperature of a single story fluidized bed. The simulation results were evaluated using the experimental data of a pilot cross flow fluidize bed dryer. The comparison showed that the model can reasonably predict the process. Therefore, the simulation was used to investigate a new design of three story dryer (three sequential single story dryers). The simulation results showed while inlet solid moisture was 0.32 and outlet solid moisture for the single-story dryer was 0.19, in the same conditions, outlet solid moisture for the three-story dryer was 0.13. This means the new design can reduce solid moisture by 50 percent more, indicating the better use of hot air and subsequently more energy saving.</span> <span>Drying process demands high power consumption due to the low efficiency of this process in the industries. Therefore, modeling and simulation of dryers in order to optimize them and to design more efficient dryers is necessary. In this research, a cross-flow fluidized bed dryer has been simulated in order to evaluate a new design of the dryer. A mathematical model has been used to predict outlet solid moisture and temperature as well as outlet air humidity and temperature of a single story fluidized bed. The simulation results were evaluated using the experimental data of a pilot cross flow fluidize bed dryer. The comparison showed that the model can reasonably predict the process. Therefore, the simulation was used to investigate a new design of three story dryer (three sequential single story dryers). The simulation results showed while inlet solid moisture was 0.32 and outlet solid moisture for the single-story dryer was 0.19, in the same conditions, outlet solid moisture for the three-story dryer was 0.13. This means the new design can reduce solid moisture by 50 percent more, indicating the better use of hot air and subsequently more energy saving.</span> https://mej.aut.ac.ir/article_1763_df9028fcb6b065e000ffe8a4f03eeb38.pdf