تأثير عرض قناة الفجوة الهوائية على معدل التدفق الكتلي، رقم رايلي وكفاءة نظام التدفئة الشمسية السلبية

محتوى المقالة الرئيسي

Ehsan F. Abbas
Shayma A. Azat

الملخص

تم دراسة معدل التدفق الكتلي ورقم رايلي تجريبيا على منظومة الطاقة الشمسية السلبية باستخدام جدار ترومب يحتوي على )شمع صناعي( ويستخدم كمواد متغيرة الطور
( PCM (. تم إنشاء مقصورة اختبار من الواح معزولة حراريا من مادة ) (PVC باستثناء الجدار الجنوبي، حيث غطيت جدار ترومب من الخارج بطبقة من الزجاج الشفاف
بسمك 6 ملم. أجريت ستة اختبارات خلال فصل الشتاء في مدينة كركوك بستة اعماق مختلفة لقناة الفجوة الهوائية ) 10 ، 15 ، 20 ، 25 ، 30 ، 35 ( سم. حيث اظهرت نتائج
الاختبارات بأن معدل تدفق الكتلة يتناسب طرديا" مع عرض القناة وعكسًا مع رقم رايلي. علاوة على ذلك فان أعلى كفاءة التي حصلت عليها عند عمق 30 سم ، حيث كانت
بحوالي 2.45 مرة من كفاءة 10 سم.

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