دانلود مقاله ISI انگلیسی شماره 61503
عنوان فارسی مقاله

بررسی تجربی عملکرد یک سیستم دیوار ذخیره سازی جمع کننده با استفاده از مواد تغییر فاز

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
61503 2015 11 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Experimental investigations on the performance of a collector–storage wall system using phase change materials
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Energy Conversion and Management, Volume 105, 15 November 2015, Pages 178–188

کلمات کلیدی
دیوار گردآورنده ذخیره سازی؛ مواد تغییر فاز؛ ذخیره سازی حرارتی؛ ساختمان خورشیدی غیرفعال ؛ تجربه
پیش نمایش مقاله
پیش نمایش مقاله بررسی تجربی عملکرد یک سیستم دیوار ذخیره سازی جمع کننده با استفاده از مواد تغییر فاز

چکیده انگلیسی

Experiments have been performed on the thermal behavior of a collector–storage wall system using PCM (phase change material). PCM slabs were attached on the gap-side wall surface to increase the heat storage. The test was carried out for a whole day with charging period of 6.5 h and discharging period of 17.5 h, respectively. Wall and air temperatures as well as air velocity in the gap were measured for analysis. The results showed that the PCM surface temperature increases first rapidly, then slowly and rapidly again during the charging process, which in turn corresponds with the three storage stages: sensible heat (solid), latent heat (melting) and sensible heat (liquid), respectively; while in the discharging process the PCM surface temperature decreases slightly shortly after the initial sharp drops, which suggests the long time period of solidification for PCM to release latent heat. Subject to the variations of PCM surface temperatures, similar trends were also found for the gap air temperatures, glazing temperature and indoor temperature. Both the air flow rate and heating rate by air circulation have up and down fluctuations during the charging period, and then, shortly after initial sharp drops, they keep at nearly steady values during the discharging period. The indoor temperature was found to be above 22 °C during the whole discharging period (17.5 h) under present conditions, which indicates that the indoor thermal comfort could be kept for a long time by using PCM in collector–storage wall system.

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پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.