تحلیل انرژی و اگزرژی چرخه‌های تبرید جذبی تک اثره و ترکیبی جذبی– اجکتور حاوی محلول آبی لیتیوم بروماید

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد، مرکز تحقیقات انرژی و توسعه پایدار، واحد سمنان، دانشگاه آزاد اسلامی، سمنان، ایران

2 استادیار، مرکز تحقیقات انرژی و توسعه پایدار، واحد سمنان، دانشگاه آزاد اسلامی، سمنان، ایران

3 استادیار، گروه مهندسی شیمی، واحد تهران مرکزی، دانشگاه آزاد اسلامی، تهران، ایران

چکیده

در این مقاله، انرژی و اگزرژی چرخه‌های تبرید جذبی تک اثره و ترکیبی جذبی– اجکتور به صورت تحلیلی انجام شده است. پس از تحلیل چرخه­ها و ارائه معادلات حاکم و بسط معادلات در نرم افزار EES،  به تحلیل انرژی و اگزرژی (از دیدگاه قانون اول و دوم ترمودینامیک) و محاسبه خروجی‌ها و نتایج حاصله برای چرخه تبرید جذبی تک اثره و چرخه تبرید ترکیبی جذبی اجکتور (اجکتور مابین چگالنده و ژنراتور قرار گرفته است) پرداخته شده است. همچنین تأثیر تغییرات دمای تبخیر کننده و ژنراتور بر میزان بازگشت ناپذیری، ضریب عملکرد، اتلاف اگزرژی و بازده اگزرژی چرخه‌های مورد اشاره، بررسی گردیده است. ملاحظه شد که برای شرایط یکسان (دمای تبخیر کننده و چگالنده یکسان) ضریب عملکرد چرخه تبرید ترکیبی جذبی– اجکتور نسبت به چرخه تبرید جذبی تک اثره بیشتر از  30 درصد افزایش نشان می­دهد اما تفاوت چشمگیری در بازده اگزرژی این دو چرخه نسبت به هم وجود ندارد.

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