دانلود مقاله ISI انگلیسی شماره 64866
عنوان فارسی مقاله

بررسی رفتار حرارتی بام سبز: یک مدل جفت انتقال حرارت و جرم

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
64866 2011 8 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Assessment of green roof thermal behavior: A coupled heat and mass transfer model
منبع

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

Journal : Building and Environment, Volume 46, Issue 12, December 2011, Pages 2624–2631

کلمات کلیدی
بام سبز؛ تعادل آب؛ تبخیر و تعرق؛ تراکم شاخ و برگ - اعتبار تجربی
پیش نمایش مقاله
پیش نمایش مقاله بررسی رفتار حرارتی بام سبز: یک مدل جفت انتقال حرارت و جرم

چکیده انگلیسی

Green roofs have a positive effect on the energy performance of buildings, providing a cooling effect in summer, along with a more efficient harnessing of the solar radiation due to the reflective properties found inside the foliage. For assessing these effects, the thermodynamic model was developed as well as the thermo-physical properties of the green roof components were characterized. Its typologies and vegetation styles should also be studied. The proposed model is based on energy balance equations expressed for foliage and soil media. In this study, the influence of the mass transfer in the thermal properties and evapotranspiration were taken into account. We then added the water balance equation into our model and performed a numerical simulation. By assuming the outdoor conditions, the roof support temperature and the drainage water as inputs, the model evaluates the temperatures evolution at foliage and soil ground levels. A parametric study was performed using the proposed model to classify green roofs depending on the considered climate condition. Comparisons were undertaken with a roof slab concrete model; a significant difference (of up to 30 °C) in temperature between the outer surfaces of the two roofs was noticed in summer. The model was experimentally validated according to green roof platform, which was elaborated. The mass transfer effect in the subtract was very effective in reducing the model errors. Simulation results show that the use of vegetation in the roof building improves not only thermal comfort conditions, but the energy performance of a building.

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