Influence of infrared and hot air-drying method on energy requirements for tomato leather | ||||
| Al-Azhar Journal of Agricultural Engineering | ||||
| Volume 9, Issue 1, June 2025 PDF (2.21 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/azeng.2025.362639.1030 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Eman Ibrahim Elbadawy1; Mohamed R Darwish2, 3; Magda Abdelrahman1; Mohamed Saied Ghoname  2
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| 1Agricultural Engineering Research Institute, Dokki, Giza, Egypt. | ||||
| 2Agricultural Engineering Department, Faculty of Agriculture, Tanta University, Gharbia, Egypt. | ||||
| 3Faculty of Technology of Industry and Energy, Samannoud Technological University, Gharbia, Egypt. | ||||
| Abstract | ||||
| An experimental trial was held to examine the drying kinetics of tomato leather, specific energy consumption, energy cost, and quality parameters. This study investigates the effect of various variables on Tomato leather drying using infrared and hot air. The experiments were held using tomato leather thicknesses 0.8 cm and 0.6 cm, three air velocities (0.5, 1, and 1.5 m/s), drying temperature (50, 55 and 60 °C), and infrared radiation (800 and 1000 W/m2). During the experiment, specific energy consumption, energy cost, and tomato leather quality were measured. Experimental data show that the Lewis model is the most suitable drying model with lower RMSE, MBE, and χ2 and the highest R2 value to describe tomato leather drying kinetics compared to the Henderson and Logarithmic models. IR and convective hot air drying methods maintain a higher drying rate and short drying duration for 0.6 cm tomato leather thickness when using 1.5 m/s air velocity, 60 °C drying temperature, and 1000 W/m2 radiation intensity. The lowest values of energy consumption, SC, and energy cost were (3.75 kWh,11.36 kWh/kg, and 0.882 $/kg) respectively and the highest values of MER and SMER were (0.07 kgw/h and 0.09 kgw/kW.h), respectively were achieved at 0.6 cm tomato leather thickness 1.5 m/s air velocity, 60 °C drying air temperature, and 1000 W/m2 radiation intensity. | ||||
| Keywords | ||||
| Specific energy; Infrared and hot air; Energy value; tomato leather drying | ||||
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