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Experimental and modeling study of tomato pomace waste drying in a new solar greenhouse: Evaluation of new drying models
Renewable Energy ( IF 9.0 ) Pub Date : 2019-04-01 , DOI: 10.1016/j.renene.2018.10.020
Ouassila Badaoui , Salah Hanini , Ahmed Djebli , Brahim Haddad , Amina Benhamou

Abstract Algeria industry fruit processing generates a huge amount of waste which causes a serious environmental problem. Thereby, the use of solar drying as a clean energy process seems to be a promising solution. This will enhance the value of fruit waste by reusing it in a dry form, and will also contribute to the protection of the environment. For this purpose, an innovative greenhouse solar dryer has been designed at the Solar Equipment Development Unit in Bou Ismail. An experimental study of solar drying kinetics of industrial tomato pomace was conducted to test the performance of the new solar dryer as a waste processing dryer. The drying temperature of the tomato waste, using this type of dryer, varies between 40 and 58 °C. The duration of the drying operation for a final product is only 5 h. Five new universal and dimensionless models and five different drying models chosen from the literature were evaluated in order to select the model that better fits the experimental data generated during the drying process. Among the different models tested, it emerged that the new model2 was the most suitable to describe the drying process of tomato waste. Also, the diffusion coefficient and the activate energy were studied and determined. The effective diffusivity varies between 3.2E-9 and 4.7E-10 m2/s with activation energy is 75.6 kJ/mol.

中文翻译:

新型日光温室番茄渣废弃物干燥试验与建模研究:新型干燥模型评价

摘要 阿尔及利亚工业水果加工产生大量废弃物,造成严重的环境问题。因此,使用太阳能干燥作为清洁能源过程似乎是一个有前途的解决方案。这将通过以干燥形式重新利用水果废物来提高水果废物的价值,并且还将有助于保护环境。为此,位于 Bou Ismail 的太阳能设备开发部门设计了一种创新的温室太阳能干燥机。对工业番茄渣的太阳能干燥动力学进行了实验研究,以测试新型太阳能干燥机作为废物处理干燥机的性能。使用这种类型的干燥机,番茄废料的干燥温度在 40 到 58 °C 之间变化。最终产品的干燥操作持续时间仅为 5 小时。对从文献中选择的五种新的通用无量纲模型和五种不同的干燥模型进行了评估,以选择更适合干燥过程中产生的实验数据的模型。在测试的不同模型中,新模型 2 最适合描述番茄废料的干燥过程。此外,研究并确定了扩散系数和活化能。有效扩散率在 3.2E-9 和 4.7E-10 m2/s 之间变化,活化能为 75.6 kJ/mol。此外,研究并确定了扩散系数和活化能。有效扩散率在 3.2E-9 和 4.7E-10 m2/s 之间变化,活化能为 75.6 kJ/mol。此外,研究并确定了扩散系数和活化能。有效扩散率在 3.2E-9 和 4.7E-10 m2/s 之间变化,活化能为 75.6 kJ/mol。
更新日期:2019-04-01
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