Summer Thermal Performance of Ventilated Roofs with Tiled Coverings

被引：6

作者：

Bortoloni, M. ^{[1
]}

Bottarelli, M. ^{[1
]}

Piva, S. ^{[2
]}

机构：

[1] Univ Ferrara, Dipartimento Architettura, Via Quartieri 8, I-44121 Ferrara, Italy

[2] Univ Ferrara, ENDIF Engn Dept Ferrara, Via Saragat 1, I-44122 Ferrara, Italy

来源：

34TH UIT HEAT TRANSFER CONFERENCE 2016 | 2017年 / 796卷

关键词：

AIR-FLOW;

D O I：

10.1088/1742-6596/796/1/012023

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The thermal performance of a ventilated pitched roof with tiled coverings is analysed and compared with unventilated roofs. The analysis is carried out by means of a finite element numerical code, by solving both the fluid and thermal problems in steady-state. A whole one -floor building with a pitched roof is schematized as a 2D computational domain including the air -permeability of tiled covering. Realistic data sets for wind, temperature and solar radiation are used to simulate summer conditions at different times of the day. The results demonstrate that the batten space in pitched roofs is an effective solution for reducing the solar heat gain in summer and thus for achieving better indoor comfort conditions. The efficiency of the ventilation is strictly linked to the external wind conditions and to buoyancy forces occurring due to the heating of the tiles.

引用

页数：10

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