مهندسی و مدیریت انرژی

مهندسی و مدیریت انرژی

طراحی و ارزیابی عملکرد سیستم آب‌گرم‌کن خورشیدی به همراه منبع ذخیره، برای تأمین آب‌گرم مصرفی یک ساختمان مسکونی نمونه در شهرهای تهران و کاشان

نوع مقاله : مقاله پژوهشی

نویسندگان
زهرا پارسای
مجید سبزپوشانی
دانشکده مهندسی مکانیک- حرارت و سیالات، دانشگاه کاشان، کاشان، ایران
10.22052/eem.2026.258962.1183
چکیده
کلکتورهای آب‌گرم‌کن خورشیدی به دلیل بهره‌گیری از انرژی تجدیدپذیر، کاهش مصرف سوخت‌های فسیلی و هزینۀ بهره‌برداری پایین، از مهم‌ترین گزینه‌ها در تأمین انرژی حرارتی ساختمان‌ها محسوب می‌شوند. در این پژوهش، عملکرد یک سامانه آب‌گرم‌کن خورشیدی برای یک ساختمان مسکونی در دو شهر تهران و کاشان با استفاده از نرم‌افزار ترنسیس (Trnsys Software) به‌صورت دینامیکی و در بازه زمانی یک‌ساله مورد ارزیابی قرار گرفته است. نتایج نشان داد که تابش خورشیدی در هر دو شهر دارای رفتار فصلی مشخصی است؛ به‌طوری که بیشترین میزان تابش در فصل گرم سال و کمترین مقدار آن در فصل زمستان مشاهده می‌شود. تحلیل نتایج انرژی نشان داد که انرژی مفید تولیدی کلکتور ارتباط مستقیمی با شدت تابش داشته و در دوره‌های اوج تابش به بیش از 5000 kJ/h رسیده است. هرچند تلفات حرارتی با افزایش دمای عملکرد کلکتور افزایش‌یافته، اما در اغلب ساعات سال انرژی مفید تولیدی بر تلفات غلبه داشته است. همچنین نیاز به انرژی کمکی در فصل تابستان تقریباً صفر بوده و در فصل زمستان افزایش‌یافته است. بررسی رفتار حرارتی مخزن ذخیره نشان داد که دمای آب در بیشتر ساعات در محدودۀ پایدار قرار داشته است. بازده سالانه کلکتور در کاشان 37/57% و در تهران 08/55% به دست آمد که نشان‌دهنده عملکرد مطلوب سامانه در هر دو اقلیم است. در مجموع، نتایج بیانگر آن است که سامانه قادر به تأمین مناسب بار حرارتی ساختمان بوده و مناطق با تابش بالاتر، مانند کاشان، شرایط بهینه‌تری برای بهره‌برداری از سامانه‌های خورشیدی حرارتی فراهم می‌کنند.
کلیدواژه‌ها
آبگرمکن خورشیدی
تامین انرژی حرارتی
ساختمان مسکونی
شبیه سازی انرژی
ایران
موضوعات
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مهندسی و مدیریت انرژی
دوره 15، شماره 4
پاییز 1405
صفحه 37-60