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Choosing the Optimal Economic Size of the Batch Closed Digester Providing with Solar Energy During Thermophilic Anaerobic Digestion

اختيار الحجم الاقتصادي الأمثل لمخمر دفعي مغلق مزود بالطاقة الشمسية ضمن الشروط الحارة للتخمير اللاهوائي

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 Publication date 2014
and research's language is العربية
 Created by Shamra Editor




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This research aims to study the effect of the digester size on its thermal requirements in order to reach the optimal economic size to him. Where were studied a batch closed digester with solar collector, where he was measuring a thermal requirements at the same ambient conditions with the change of the size of this digester, in order to note the relative change of the heat requirements, and to get the optimal size that requires the least amount of energy in thermophilicanaerobic digestion.


Artificial intelligence review:
Research summary
يهدف هذا البحث إلى دراسة تأثير حجم المخمر على المتطلبات الحرارية اللازمة لإتمام عملية التخمير اللاهوائي باستخدام الطاقة الشمسية. تم استخدام مخمر دفعي مغلق مزود بلاقط شمسيّ، وتم قياس المتطلبات الحرارية له عند نفس الشروط المحيطة مع تغيير حجم المخمر. الهدف هو تحديد الحجم الاقتصادي الأمثل الذي يتطلب أقل كمية من الطاقة ضمن الشروط الحارة. تمت التجارب في المنطقة الساحلية باستخدام روث البقر المخلوط بالماء، وتم قياس درجات الحرارة المختلفة للمخمر والجو والخزان الحراري. أظهرت النتائج أن حجم المخمر المثالي يتراوح بين 10 و20 متر مكعب، حيث تكون الضياعات الحرارية عبر جدران المخمر أقل من 18% من الاحتياجات الحرارية الكلية. توصي الدراسة باستخدام لاقط شمسي واحد لعدة مخمرات لتقليل الفاقد الحراري وتحسين كفاءة التخمير.
Critical review
تعد هذه الدراسة خطوة مهمة نحو تحسين كفاءة إنتاج الغاز الحيوي باستخدام الطاقة الشمسية. ومع ذلك، يمكن توجيه بعض النقد البناء لتحسين البحث. أولاً، كان من الممكن توسيع نطاق التجارب لتشمل مناطق جغرافية مختلفة لتعميم النتائج. ثانياً، لم يتم التطرق بشكل كافٍ إلى التكاليف الاقتصادية المرتبطة بتصنيع وتركيب المخمرات واللاقطات الشمسية، وهو جانب مهم لتقييم الجدوى الاقتصادية. ثالثاً، كان من الممكن استخدام نماذج رياضية أكثر تعقيداً لتحليل البيانات بشكل أدق. وأخيراً، يفضل إجراء تجارب طويلة الأمد لتقييم استدامة النظام وكفاءته على مدار العام.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي هو تحديد الحجم الاقتصادي الأمثل لمخمر دفعي مغلق مزود بالطاقة الشمسية ضمن الشروط الحارة للتخمير اللاهوائي.

  2. ما هي المواد المستخدمة في عملية التخمير في التجارب؟

    تم استخدام روث البقر المخلوط بالماء بنسبة 1:1 كمواد للتخمير في التجارب.

  3. ما هو الحجم المثالي للمخمر وفقاً للدراسة؟

    الحجم المثالي للمخمر يتراوح بين 10 و20 متر مكعب، حيث تكون الضياعات الحرارية عبر جدران المخمر أقل من 18% من الاحتياجات الحرارية الكلية.

  4. ما هي التوصيات الرئيسية التي خلصت إليها الدراسة؟

    توصي الدراسة باستخدام لاقط شمسي واحد لعدة مخمرات لتقليل الفاقد الحراري وتحسين كفاءة التخمير، وبناء مخمرات بحجوم مناسبة لتأمين سعة حرارية كبيرة للمادة المخمرة.


References used
Dr. Teguh Wikan Widodo and Dr. Agung Hendriadi Development of Biogas Processing for Small Scale Cattle Farm in Indonesia Indonesian Center for Agricultural Engineering Research and Development (ICAERD) Tromol Pos 2 Serpong, Tangerang, Banten 15310 Indonesia ,2005
K.J. Chae, Am Jang, S.K. Yim, In S. Kim, The effects of digestion temperature and temperature shock on the biogas yields from the mesophilic anaerobic digestion of swine manure, pp .1-6 ,Received 5 July 2004; received in revised form 14 September 2006; accepted 25 November 2006 Available online 16 February 2007
Edited by Ackmez Mudhoo, Biogas production pretreatment methods in Anaerobic Digestion. , Lecturer Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, Mauritius,Copublished by John Wiley & Sons, Inc. Hoboken, New Jersey, and Scrivener Publishing LLC, Salem, Massachusetts. Published simultaneously in Canada, pp.346
G.D. Zupancˇicˇ, M. Rosˇ. Heat and energy requirements in thermophilic anaerobic sludge digestion. National Institute of Chemistry, Department for Chemistry, Biology and Technology of Water, Hajdrihova 19, PO Box 660, SI-1000 Ljubljana, Slovenia, pp. 2256-2267
Hans Dieter Baehr · Karl Stephan. Heat and Mass Transfer . Second, revised Edition ,2006 .pp.705
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