Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Experimental and CFD Simulation Studies of Infrared Explosion Puffing Dryer

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2022 ASABE Annual International Meeting  2200870.(doi:10.13031/aim.202200870)
Authors:   Xianlong Yu, Zongchao Zhang, Qingyun Sun, Feng Zhao
Keywords:   Mathematical simulation, Flow field, Explosion puffing, Decompression

Abstract. An infrared explosion puffing dryer was developed to achieve the process control of pressure. A three-dimensional model was developed to simulate the flow field of pressure relief process. The model accounts for the atmosphere mode and vacuum mode and predicts the flow field evolution with time in drying chamber. The simulation was performed at atmosphere mode and vacuum mode with initial pressure of 300 kPa. The flow field evolution and distribution in drying chamber and vacuum tank were explored. Results showed that the pressure relief process could be divided into two stages, namely, constant rate stage and decreasing rate. When the vacuum valve was opened, the air in drying chamber is rushed into the vacuum tank. This results in lower pressure in the drying chamber and higher pressure in the vacuum tank. The pressure relief rate between the atmosphere and vacuum modes is very similar in the early stage. Removing the air in the drying chamber by atmosphere firstly is helpful to improve the pressure relief rate. The findings of current work provide theoretical basis to better design and control of the process as it elucidates the flow field characteristic and illustrates the pressure relief process.

(Download PDF)    (Export to EndNotes)