شبیه سازی عددی و آزمایشگاهی پارامترهای موثر انتقال حرارت با استفاده از ساختار نوین مغشوش کننده ها در مبدل های حرارتی

نوع مقاله : مقاله علمی پژوهشی

نویسندگان

1 دکترا، شرکت پالایش و پخش فرآورده های نفتی کرمانشاه، کرمانشاه، ایران

2 دکترا، گروه مهندسی شیمی و نفت، دانشکده فنی مهندسی، دانشگاه ایلام، ایران

3 استاد، گروه مهندسی شیمی، دانشکده نفت و مهندسی شیمی، دانشگاه رازی، کرمانشاه، ایران

4 استادیار، گروه مهندسی شیمی، واحد کرمانشاه، دانشگاه آزاد اسلامی، کرمانشاه، ایران

چکیده

در مطالعه حاضر به بررسی تاثیر قرار دادن مغشوش کننده های مختلف در داخل مبدل حرارتی لوله ای بر پارامترهای مهم حرارتی و بازده کلی پرداخته شده است. در این رابطه از روش هایی همچون نرم افزار طراحی آزمایشات و از مجموعه رویه سطح پاسخ ( RSM) روش مرکب مرکزی ( CCD) برای طراحی آزمایشات استفاده شد. همچنین به جهت تقویت تحلیل بیشتر از روش های عددی و مدل سازی شبکه عصبی نیز بهره گرفته شده است، در ادامه روش های شبیه سازی مذکور مقایسه گردیدند. نتایج این پژوهش در تمام موارد استفاده از مغشوش کننده های جدید افزایش ضریب انتقال حرارت و به تبع آن بهبود عدد ناسلت را نشان می دهد. به طوری که بر خلاف مغشوش کننده های گذشته این مغشوش کننده، علاوه بر چرخش جریان، خود آن هم دارای قابلیت چرخش است. در پایان میانگین درصد خطای مطلق در روش مدل سازی نرم افزار طراحی آزمایش ها و شبکه عصبی به ترتیب برابر 77/10و 94/0 درصد می باشد، که این بیانگر دقت بالای روش شبکه عصبی به جهت تعیین پارامتر ضریب اصطکاک است.

کلیدواژه‌ها

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