Solar convective drying in thin layers and modeling of municipal waste at three temperatures

被引：47

作者：

Ali, Idlimam ^{[1
]}

Abdelkader, Lamharrar ^{[1
]}

El Houssayne, Bougayr ^{[1
,2
]}

Mohamed, Kouhila ^{[1
]}

El Khadir, Lakhal ^{[2
]}

机构：

[1] Cadi Ayyad Univ, Teachers Training Coll, Team Solar Energy & Med Plants EESPAM, BO-2400 Marrakech, Morocco

[2] Cadi Ayyad Univ, Lab Automat Environm & Transfer Proc LAEPT, Fac Sci Semlalia, Marrakech, Morocco

来源：

APPLIED THERMAL ENGINEERING | 2016年 / 108卷

关键词：

Solar convective; Drying kinetics; Sludge; Treatment; Modeling; Characteristic drying curve; KINETICS; SLUDGE;

D O I：

10.1016/j.applthermaleng.2016.07.098

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Sewage sludge treatment is an environmentally sensitive problem in terms of both energy and pollutants. In this context, sludge drying is often an essential step to facilitate later management such as valorization or storage. The present work aims to contribute to the optimization of solar dryer of sludge generated at the wastewater treatment plant of Marrakesh city by an experimental study in an indirect forced convection solar dryer. The drying kinetics was studied at three temperatures (50, 70 and 90 degrees C) for air flow rate fixed at 0.083 m(3) s(-1). The drying rate is determined empirically from the characteristic drying curve. Then, the influence of air heated velocity, temperature of drying air and air moisture content on the drying kinetics of product was studied. Nine statistical models have been used for the description of drying curves. The Midilli and Kucuk model seems to be the most appropriate to describe the drying curves sludge with a highest value of correlation coefficient and in various aero-thermal conditions. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：41 / 47

页数：7

共 23 条

[1] A theoretical approach to the drying process of thin film layers [J].