air velocity needed for good impingement drying
The hoods ensure uniform air distribution and impingement velocity across the sheet for highest drying rates and a good moisture profile. The constant distance between the nozzle and the paper or board enables optimum heat transfer. Drying temperatures go up to 400° C and impingement velocities up to 130 m/s. Air jet impingement drying (AJID) uses high speed air to impinge the surface of the drying material for increasing the heat transfer rate (Anderson & Singh, 2006). Air jet impingement drying (AJID) uses high speed air to impinge the surface of the drying material for increasing the heat transfer rate (Anderson & Singh, 2006). Xiao, Pang, et al. In this study, okara from soymilk process was dried using an air jet impingement dryer, and response surface methodology design was employed to optimize the process variables, including drying temperature, air velocity, and loading density. Drying process. The air jet impingement drying (AJID) applied in this study was from Qiang'an Catering Equipment Co., Ltd., China (Model H1820). Okara was evenly distributed on a mesh tray (172 × 156 mm) with the loading density of 3, 4 or 5 kg/m 2, which was put on the conveyor belt in the drying chamber. MG hoods can be arranged both on the upper and lower sides of the MG cylinder depending on the requirements. The hoods ensure uniform air distribution and impingement velocity across the sheet for highest drying rates and a good moisture profile. Inlet Web Temp o C 21 32 Air Temperature o C 96/74 96/74 Air Volume m 3 /min 219 219 Line Speed m/min 305 354 Exit Coating Solids 99% 99% Increasing Throughput Efficiency Efforts to increase line speed and drying power are intended to yield more “gross product” per hour from an existing dryer. Radiant Energy Systems manufactures and designs hot air systems for industrial drying, curing and heating applications. Our custom designed hot air dryers and ovens convert gas, electricity or steam into efficient process heat. Prime Dry MG hood (for board and MG papers). MG hoods can be arranged both on the upper and lower sides of the MG cylinder depending on the requirements. The hoods ensure uniform air distribution and impingement velocity across the sheet for highest drying rates and a good moisture profile. Web Dryers. Radiant Energy Systems manufactures and designs hot air systems for industrial drying, curing and heating applications. Our custom designed hot air dryers and ovens convert gas, electricity or steam into efficient process heat.
130 m/s