Yazar "Lamharrar, Abdelkader" seçeneğine göre listele

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    Öğe
    Comprehensive exergy analysis of dandelion root during physical pre-treatment by convective solar drying
    (Inderscience Enterprises Ltd, 2024) Moussaoui, Haytem; Chatir, Khaoula; Tuncer, Azim Dogus; Khanlari, Ataollah; Lamharrar, Abdelkader; Idlimam, Ali
    In this study, a controlled indirect solar dryer was used to dry dandelion roots at three temperatures of 60 degrees C, 70 degrees C, and 80 degrees C, together with two air flow rates of 0.0417 m(3)/s and 0.0834 m(3)/s. The main aim of this research is to carry out an exergetic analysis on the dryer chamber and the drying process in order to improve the exergetic efficiency of the solar dryer. The outcomes showed that the level of exegetic performance depends on the variation of the operating conditions. The exergy yield of the drying chamber of six drying configurations was obtained between the ranges of 48.1141%-68.2755%.
  • [ X ]
    Öğe
    Improving environmental sustainability of food waste using a solar dryer: Analyzing drying kinetics and biogas production potential
    (Pergamon-Elsevier Science Ltd, 2024) Moussaoui, Haytem; Chatir, Khaoula; Tuncer, Azim Dogus; Khanlari, Ataollah; Kouhila, Mounir; Idlimam, Ali; Lamharrar, Abdelkader
    The present work analyzes the drying kinetics of food waste, focusing on the effects of temperature, airflow and drying on biogas production. The work involves the experimental determination of food waste drying kinetics under controlled environmental conditions, including modeling the curves using a mathematical model. Indirect solar drying experiments of food waste have been performed at different air flow rates (300 m(3).h(-1) and 150 m(3).h(-1)) and temperature values (40, 50, 60, and 70 degree celsius). The temperature in the drying room was adjusted to the desired level using an auxiliary electric heating system. Energetic and environmental performance metrics of different air flow rate and temperature configurations have also been investigated and presented within the scope of this work. Additionally, an experimental investigation to measure the biogas generated by the fermentation of dried food waste was conducted. It was established that a logarithmic model best captures the drying kinetics, and the temperature and airflow are crucial variables. Increasing the drying temperature from 40 degree celsius to 70 degree celsius for the tests that performed in lower and higher flow rates improved the specific moisture extraction rate as 45.02 % and 130.65 %, respectively. It can also be observed that only phase 2 is present in the drying curve, phases 0 and 1 are absent. Furthermore, drying decreases the generation of biogas, which is primarily composed of methane, a potent greenhouse gas, according to experimental studies.