دانلود مقاله ISI انگلیسی شماره 64542
عنوان فارسی مقاله

آسایش و صرفه جویی انرژی با بام سبز فعال

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
64542 2014 13 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Comfort and energy savings with active green roofs
منبع

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

Journal : Energy and Buildings, Volume 82, October 2014, Pages 492–504

کلمات کلیدی
ذخیره انرژی؛ بام سبز ؛ کنترل هوشمند؛ سیستم های خنک کننده؛ طراحی پایدار، خنک کننده غیر فعال
پیش نمایش مقاله
پیش نمایش مقاله آسایش و صرفه جویی انرژی با بام سبز فعال

چکیده انگلیسی

Green roofs have been proposed for energy saving purposes in many countries with different climatic conditions. However, their cooling and heating potential strongly depends on the climate and building characteristics. In particular, the increase of the thermal capacity of green roofs compared to traditional roofs, if not controlled with insulation, may lead to higher cooling and heating loads. This paper discusses the energy saving potential of green roofs adopting a variable insulation strategy. A system consisting of a plenum located between a green roof and the room underneath and a sensor-operated fan that couples (or decouples) the green roof mass with the indoor environment was developed. The fan is activated and stopped using temperature based rules; the plenum is ventilated only when the fan works, creating a variable insulation system. Four cells with an insulated traditional roof, a non-insulated green roof, an insulated green roof, and a green roof with the variable insulation system have been tested in a hot and dry climate with mild winters over several years. This paper compares and discusses different plenum control algorithms. Results are particularly promising because the variable insulating system proved to adjust the thermal capacity of the roof effectively. In summer, the non-insulated green roof and the green roof with variable insulation system achieved the lowest indoor temperature; in winter, the insulated traditional roof and the variable insulation green roof system achieved the highest indoor temperatures. Measurements are hence compared with simulations. Finally, the energy saving potential of the new green roof system is evaluated.

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