Abstract
The main aim of this paper is to demonstrate the benefits that building using natural elements can provide to indoor environments when temperatures are lower. For this purpose, an experimental procedure was used to allow a comparison of the thermal behaviour of four systems: a prototype called Control (no vegetation) and three different combinations of vegetation (roofs and facades) installed in a region of tropical climate. They recorded simultaneously internal surface temperatures, internal air temperature and the external environmental conditions. The results show that the use of plant systems in buildings establishes a passive technique effective in reducing energy consumption, because of its insulation property and it maintains more pleasant thermal internal conditions than internal ones.
Highlights
Due to the population increase and the growth in urban centres, there have been significant environmental impacts as a result of the massive concentration of buildings, causing the sealing of soil, reduction of green spaces and air pollution increment
This paper proposed the study of Green Facades and Green Roofs in a tropical climate for a critical cold day, showing experimental results of four test cells in which were measured internal surface temperatures and internal air temperatures to make subsequently, a comparative study between those test cells with and without vegetation test cell
Internal surface temperatures data (IST) and Dry Bulb temperature (DBT) were measured by through thermocouples installed in the test cells
Summary
Due to the population increase and the growth in urban centres, there have been significant environmental impacts as a result of the massive concentration of buildings, causing the sealing of soil, reduction of green spaces and air pollution increment. All this leads to, a thermal behaviour modification microclimate scale and generates what is called Urban Heat Island (Vecchia, 2005). The use of Green Facades with climbing plants is able to reduce the internal temperature of buildings due to the shading that occurs there. In winter, this system protects from the cold and wind, by the branched structure forming by the stem of the plant, avoiding losses of internal heat
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