تقييم سخان هواء شمسي مثقب ذي الممر المزدوج باستخدام تحليل تداخل العوامل المؤثرة لغرض تحسين الأداء في الأنظمة الشمسية الحرارية

محتوى المقالة الرئيسي

Ali A. Gitan
Abdulbari Mohammed
https://orcid.org/0000-0001-9058-1694

الملخص

تعتبر مشكلة الكفاءة القليلة لسخانات الهواء الشمسية عائقاً في تسويق الأنظمة الحرارية الشمسية. يتأثر أداء سخانات الهواء الشمسية بشكل مباشر بتغيير مستوى العوامل المؤثرة.  يهدف هذا العمل الى تحديد العوامل المثلى عملياً من أجل تحسين أداء سخان هواء شمسي مثقب ذي الجريان المزدوج. تمت مناقشة تداخل العوامل المتعلقة بأداء سخان هواء شمسي مزدوج الجريان ذي صفيحة امتصاص مثقبة بثقوب دائرية ذات توزيع متداخل بناءً على طريقة تصميم التجارب. تمت دراسة عدد رينولدز بقيمة 10000 الى 30000 ونسبة التثقيب بقيمة 3 إلى 7 كعوامل تصميمية للنموذج بينما تم اعتماد فرق درجة الحرارة، وكمية الحرارة المكتسبة، والكفاءة الحرارية كاستجابات لنموذج الارتباط. تم الحصول على ثلاثة ارتباطات مقابلة لكل استجابة مع شكلين لكل منهما (الفعلي والمشفّر) من خلال تحليل طريقة تصميم التجارب هذه. بينت النتائج أن نسبة التداخل كانت 193٪ للكفاءة الحرارية و148٪ لكمية الحرارة المكتسبة، بينما لم تتعد 18٪ لفرق درجات الحرارة. عند المستوى الأعلى لعدد رينولدز، تم تسجيل زيادة بنسبة 12.36٪ في الكفاءة الحرارية بسبب التثقيب على عكس سخان الهواء الشمسي غير المثقوب. يغير عدد رينولدز تأثيره على الكفاءة الحرارية بشكل كبير عندما يتغير مستوى التثقيب.

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