Effectiveness of hybrid drying

The aim of this paper is to examine the effectiveness of convective drying enhanced with microwave and infrared radiation. Four drying methods: convective, convective-microwave, convective-infrared and convective-microwave-infrared, were analyzed with respect to the length of the drying time by securing a good quality of dried products. To this aim the drying curves, the temperature of drying bodies, and the drying rates were determined experimentally and the appraisal of the dried product quality was made optically. The experiments were carried out on the kaolin samples in the form of cylinders. It was stated that a proper combination of these three drying methods may result in a very high drying rate and at the same time in a very good quality of the dried product.

[1]  Stefan J. Kowalski,et al.  Qualitative Aspects of Convective and Microwave Drying of Saturated Porous Materials , 2004 .

[2]  Kinga Rajewska,et al.  Drying-induced stresses in elastic and viscoelastic saturated materials , 2002 .

[3]  Ibrahim Dincer,et al.  Drying of Porous Materials , 2004 .

[4]  A. C. Metaxas,et al.  Radio frequency assisted heat pump drying of crushed brick , 1999 .

[5]  Patrick Glouannec,et al.  Experimental survey on the combination of radiating infrared and microwave sources for the drying of porous material , 2002 .

[6]  W. Mcminn,et al.  Microwave–convective drying characteristics of pharmaceutical powders , 2005 .

[7]  Arun S. Mujumdar,et al.  Trends in microwave- related drying of fruits and vegetables , 2006 .

[8]  M. K. Bologa,et al.  Convective heat-transfer enhancement by electric fields , 1975 .

[9]  A. S. Mujumdar,et al.  DEFORMATION AND SlRESS ANALYSIS OF POROUS CAPILLARY BODIES DURING INTERMITTENT VOLUMERIC THERMAL DRYING , 1992 .

[10]  Shigeru Uchiyama,et al.  Internal Heating Effect and Enhancement of Drying of Ceramics by Microwave Heating with Dynamic Control , 2007 .

[11]  Ning Wang,et al.  Microwave power control strategies on the drying process II. Phase-controlled and cycle-controlled microwave/air drying , 2006 .

[12]  Kazuo Aoki,et al.  Influence of Irradiation Time, Particle Sizes, and Initial Moisture Content During Microwave Drying of Multi-Layered Capillary Porous Materials , 2002 .

[13]  P. Salagnac,et al.  Optimization of Radiant-Convective Drying of a Porous Medium by Design of Experiment Methodology , 2006 .

[14]  S. Kowalski,et al.  Analysis of Effectiveness and Stress Development during Convective and Microwave Drying , 2007 .

[15]  Arun S. Mujumdar,et al.  Research and Development in Drying: Recent Trends and Future Prospects , 2004 .

[16]  J. C. Ho,et al.  Simulation of Liquid Diffusion-Controlled Drying of Shrinking Thin Slabs Subjected to Multiple Heat Sources , 2003 .

[17]  A. Bergles,et al.  Heat Transfer in Rotating Narrow Rectangular Ducts With Heated Sides Parallel to the r-z Plane , 2002 .

[18]  Suresh Prasad,et al.  Drying kinetics and rehydration characteristics of microwave-vacuum and convective hot-air dried mushrooms , 2007 .

[19]  Kinga Rajewska,et al.  Mechanical Effects in Saturated Capillary-Porous Materials during Convective and Microwave Drying , 2004 .

[20]  Pedro Fito,et al.  DRYING KINETICS OF APPLE CYLINDERS UNDER COMBINED HOT AIR–MICROWAVE DEHYDRATION , 2004 .

[21]  Siaw Kiang Chou,et al.  New hybrid drying technologies for heat sensitive foodstuffs , 2001 .

[22]  J. Bueno,et al.  IMPROVING ENERGY EFFICIENCY IN COMBINED MICROWAVE-CONVECITVE DRYING , 1998 .

[23]  Patrick Salagnac,et al.  Numerical modeling of heat and mass transfer in porous medium during combined hot air, infrared and microwaves drying , 2004 .

[24]  Arun S. Mujumdar,et al.  Simulation of convection-microwave drying for a shrinking material , 2002 .

[25]  G. Musielak,et al.  Heat and mass transfer during microwave‐convective drying , 2009 .

[26]  A. Mujumdar.  Handbook of Industrial Drying , 2020 .

[27]  M. Araszkiewicz,et al.  Microwave drying of various shape particles suspended in an air stream , 2007 .

[28]  Kinga Rajewska,et al.  Stresses Generated During Convective and Microwave Drying , 2005 .