Analysis of Energy Consumption in Drying Process of Non-Hygroscopic Porous Packed Bed Using a Combined Multi-Feed Microwave-Convective Air and Continuous Belt System (CMCB)

被引:32
作者
Jindarat, W.
Rattanadecho, P. [1 ]
Vongpradubchai, S.
Pianroj, Y. [2 ]
机构
[1] Thammasat Univ, Fac Engn, Res Ctr Microwave Utilizat Engn RCME, Dept Mech Engn,RCME, Pathum Thani 12120, Thailand
[2] Thammasat Univ, Sirindhorn Int Inst Technol, Plasma & Fus Res Unit, Pathum Thani 12120, Thailand
关键词
Continuous belt system; Microwave energy; Non-hygroscopic porous packed bed; Specific energy consumption; BEHAVIOR; VACUUM; IRRADIATION; EFFICIENCY;
D O I
10.1080/07373937.2011.560318
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
In this study, the analysis of energy consumption during the drying of non-hygroscopic porous packed bed by combined multi-feed microwave-convective air and continuous belt system (CMCB) was investigated experimentally. By using a combined multi-feed microwave-convective air and continuous belt system drier, the microwave power was generated by means of 12 compressed air-cooled magnetrons of 800W each that give a maximum of 9.6 kW. The power setting could be adjusted individually in 800W steps. Hot air with the maximum working temperature of 240 degrees C was generated using 24 units of electric heater where the total power capacity is 10.8 kW. Most importantly, this work focused on the investigation of drying phenomena under industrialized microwave processing. In this analysis, the effects of the drying time, hot air temperature, porous structure (F-Bed and C-Bed), and location of magnetrons on overall drying kinetics and energy consumption were evaluated in detail. The results showed that the overall drying and energy consumption depend upon the porous structure, hot air temperature, and location of magnetrons. Furthermore, using the continuous microwave application technique had several advantages over the conventional method, such as shorter processing times, volumetric dissipation of energy throughout a product, and less energy consumption. The results presented here provided fundamental understanding for the drying process using a combined multi-feed microwave-convective air and continuous belt system in industrial size.
引用
收藏
页码:926 / 938
页数:13
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