Characterising thermal behaviour of buildings and its effect on urban heat island in tropical areas

Surjamanto Wonorahardjo,Inge Magdalena Sutjahja,Y Mardiyati,Heri Andoni,Rizky Amalia Achsani,S Steven,Dixon Thomas

doi:10.1007/s40095-019-00317-0

Surjamanto Wonorahardjo, Inge Magdalena Sutjahja + Show 5 more

Open Access

https://doi.org/10.1007/s40095-019-00317-0

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Abstract

The heat island phenomenon in major cities is partly due to the excessive use of concrete and brick, which causes many problems regarding thermal comfort and energy expenditure. The thermal behaviour of the envelope wall material depends on its density, heat capacity, and thermal conductivity, and its effect on the heat island intensity (HII) is reported in this paper. Experiments and simulations were carried out on the four most popular building materials: brick, aerated concrete, wood with glass-wool insulation, and glass fibre-reinforced concrete with glass-wool insulation, with each material having a dimension of 1 m × 1 m. Experiments to analyse the thermal behaviour of the wall materials were performed by exposing each material to heat radiation from 2 × 1000 W halogen lamps for 4 h, followed by 4 h of cooling. The HII simulations were carried out in a simple urban kampong in a tropical area using Energy2D software. Heat flow analyses confirmed the thermal behaviour of the four walls, which can be categorised into two types: heat storage of block wall (BW) type and heat flow inhibition of insulated sandwich wall (ISW) type. The BW type showed 0.32 °C higher indoor air temperature than the ISW type, while the HII simulation showed ISW to be 0.74 °C higher than BW; however, both types increase the intensity and need mitigation treatment. The results of this study are important for the technological approach for dealing with local warming to lower the energy expenditure of poor people in an urban area.

Highlights

In the past few decades, the construction industry has played a major role in the use of building materials that are currently in use [1, 2]
The results of this study show the importance of thermal behaviour on various types of building materials, which produce different effects on the heat island intensity (HII)
It can be concluded that the HII is a function of the specific heat, density, and thermal conductivity of the building materials used in the area

Summary

Introduction

In the past few decades, the construction industry has played a major role in the use of building materials that are currently in use [1, 2]. Deterioration of air, water, and soil environment quality due to pollution is difficult to avoid, and it significantly affects the quality of human life [3]. Building materials have contributed to the destruction of the urban thermal environment and increase in energy consumption [4, 5]. High-performance buildings have been reported to have appropriate material selection with regard. International Journal of Energy and Environmental Engineering (2020) 11:129–142 Material. Brick Concrete/cement plaster GRCGypsum Aerated concrete Wood Multiplex Glass-wool. 1600–1800 2000 2000–2400 ~700–800 ~500–850 ~300–700 400–630 30–34 Ref. [36] [36] [37, 38] [39, 40] [41, 42] [36, 43] [43,44,45] [46]

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