مروری بر افزایش کارایی و کاهش مصرف انرژی در سیستم‌های تبرید خانگی با استفاده از نانو‌مبردها
الموضوعات : یافته های نوین کاربردی و محاسباتی در سیستم های مکانیکی
مجید جلیلیان
1
,
محمد حسن کامیاب
2
,
حامد شریفی دوست
3
1 - کارشناسی ارشد مهندسی مکانیک، دانشکده عمران، آب و انرژی، دانشگاه جامع امام حسین(ع)
2 - مهندسی مکانیک، دانشکده عمران، آب وانرژی، دانشگاه جامع امام حسین(ع)
3 - کارشناسی ارشد مهندسی مکانیک
الکلمات المفتاحية: نانو‌مبردها, مصرف انرژی, سیستم‌های تبرید خانگی, انتقال حرارت,
ملخص المقالة :
این مطالعه مروری به بررسی نقش نانو‌مبردها با ویژگی‌های ترموفیزیکی و انتقال حرارت منحصربه‌فرد در بهبود عملکرد سیستم‌های تبرید خانگی می‌پردازد. یافته‌ها نشان می‌دهند که افزودن نانوذرات به مبردها می‌تواند با افزایش ظرفیت خنک‌کنندگی و کاهش نیاز به توان ورودی کمپرسور، کارایی انرژی را افزایش دهد. با این حال، چالش‌هایی مانند پایداری، توزیع یکنواخت و جلوگیری از تجمع نانوذرات، از عوامل مهمی هستند که در بهبود عملکرد سیستم تاثیرگذارند. نتایج حاکی از آن است که نانوسیالات با بهبود هدایت حرارتی و کاهش زمان کارکرد کمپرسور، مصرف انرژی را کاهش می‌دهند؛ به‌ویژه در یخچال‌هایی که نیازمند کارکرد مداوم هستند. در این تحقیق همچنین بیان می‌گردد که هدایت حرارتی نانو‌مبردها با کاهش اندازه ذرات و افزایش دما افزایش یافته و ویسکوزیته آن‌ها با افزایش دما کاهش می‌یابد. برای نمونه، در نانو مبرد SWCNT/R-134a، افزایش هدایت حرارتی در دمای 325 درجه کلوین و غلظت حجمی 5 درصد، حدود 43 درصد بوده است. به‌طور کلی، یافته‌های این پژوهش نشان می‌دهد که استفاده از نانو‌مبردها می‌تواند رویکردی مؤثر در کاهش مصرف انرژی و افزایش کارایی سیستم‌های تبرید خانگی باشد.
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