بررسی و ارزیابی خواص دی‌الکتریک بیودیزل کرچک با استفاده از امواج مایکروویو

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه مهندسی مکانیک بیوسیستم، دانشگاه تربیت مدرس، تهران، ایران

2 /گروه مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه تربیت مدرس.

3 مهندسی برق، مرکز تحقیقات مخابرات ایران، تهران

چکیده

گرایش به تحقیق پیرامون تولید و کاربرد انرژی­های تجدیدپذیر، ازجمله بیودیزل، به­منظور کاهش گاز­های گلخانه­ای و آلایندگی­های ناشی از سوخت­های فسیلی، یکی از مهم­ترین مواردی است که در سیاست­های جهانی به آن پرداخته شده است. خواص دی­الکتریک (έ، ثابت دی الکتریک و ″ε، فاکتور اتلاف دی الکتریک) مواد نقش عمده­ای در طراحی سامانه مایکروویو و فرایند تولید و فرآوری بیودیزل دارند.هدف از این پژوهش بررسی و ارزیابی خواص دی­الکتریک بیودیزل کرچک در مقیاس آزمایشگاهی با استفاده از فناوری پیشرفته مایکروویو و بررسی ارتباط بین پارامترهای مختلف موثر آن است. در این تحقیق، اثرات زمان واکنش (1، 3 و 9 دقیقه)، غلظت کاتالیزور (1، 1/5 و 2 درصد وزن روغن) و تغییرات دما (30، 45 و 60 درجه سلسیوس) مورد مطالعه قرار گرفت. از سامانه بازتابش پروب در فرکانس MHz 2450 برای اندازه­گیری خواص دی­الکتریک استفاده شد. نتایج نشان داد که با افزایش زمان واکنش و کاهش دما، مقادیر ثابت دی­الکتریک افزایش و با کاهش غلظت کاتالیزور، دما و زمان واکنش، فاکتور اتلاف دی­الکتریک کاهش می­ یابد.

کلیدواژه‌ها

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