Influence of foliage thickness on thermal performance of green façades in hot and humid climate

Li, Cuimin; Wei, Jingshu; Li, Chunying

doi:10.1016/j.enbuild.2019.06.045

Cited by 30 publications

(14 citation statements)

References 39 publications

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“…The variation of temperature on a slab in an external environment presents a periodic behavior, as demonstrated by several authors [24][25][26][27]. Consequently, daily temperature variation can be assumed as a periodic function.…”

Section: Fundamentals and Methodologymentioning

confidence: 97%

On the Thermal Stresses Due to Weathering in Natural Stones

et al. 2021

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Natural weathering is known as one of the key mechanisms causing degradation in building materials. Great efforts have been made to develop new materials and new processes for protecting those that already exist. Natural stones are an example of a natural material that has been extensively used for building construction since ancient times. In addition, they fit durability, aesthetic, and mechanical requirements. Thus, they still have great importance in the construction business nowadays. Though chemical interactions in natural stones, such as oxidation or hydrolyses, have been widely studied, in the last few decades, the physical weathering due to daily temperature variations has begun to be considered as a key mechanism of degradation and has been incorporated in international standards. This process is particularly important in calcitic marble slabs, where it can cause extensive damages to facades. Consequently, there are restrictive rules for the use of marble as an external coating material in many countries. In this paper, the thermal stresses induced by daily variations in temperature are calculated using geographic and meteorological information. The concept of sol-air temperature is used to estimate the temperatures of the hidden and exposed surfaces of a slab, and Fourier’s law and the theory of elasticity are used to calculate the temperature and stress distribution, respectively. The proposed methodology allows for a detailed reconstruction of the stress induced inside marble slabs using parameters commonly acquired in meteorological stations as input data. The developed methodology was validated by comparing in-situ measurements of the temperature of a building in Pescara (Central Italy). A good correlation between the theoretical and real temperatures was found; in particular, the peak tensile stresses inside the slabs were estimated at 75 kPa.

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Section: Fundamentals and Methodologymentioning

confidence: 97%

On the Thermal Stresses Due to Weathering in Natural Stones

et al. 2021

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“…When evaluating the green facade effect, a thermal improvement was observed with an average of 1.1°C and a maximum of 2.7°C in the south-facing office, and an average of 0.6°C and a maximum of 1.9°C in the northfacing office [22]. Li et al [23] have investigated the impact of leaf thickness on the thermal behaviour of traditional green facades in two-story building, as shown in Figure 5, with a south-facing wall covered with Boston ivy at Suzhou University of Science and Technology, China. Compared to the bare wall, a maximum temperature reduction of 6.3 °C has been observed on the surface of the thickest exterior wall with a foliage thickness of 19.8 cm.…”

Section: Building Applications Of Green Facadesmentioning

confidence: 99%

Energy Saving Aspects of Green Facades: Current Applications and Challenges

Cüce

Güçlü

et al. 2021

Green Building & Construction Economics

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One of the most effective key methods to meet today’s increasing energy demands is to use resources efficiently. Especially in heating and cooling applications, notable energy savings are possible by efficient use of resources. For this purpose, insulation applications on building surfaces have been conducted for many years on a global scale. Besides, green facades are also considered to be one of the most suitable and efficient building cover technologies because of their superior benefits like energy saving, acoustic and thermal features, environmental aspects, and aesthetic appearance. Green facades are greenery media climbing over the facade, either traditionally or with special support structures. It is a highly preferred method in building coating applications, especially in recent years, but the initial installation and maintenance costs are somewhat expensive compared to traditional methods. Nevertheless, it still stands out as a cost-effective technology when its impacts on human health and environmental aspects are evaluated along with architectural features and social acceptance. Within the scope of this review, green facade systems are investigated in detail in terms of methodology, building applications, cost, challenges and potential solutions.

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“…• Plant thickness [32] Carried out field measurement on a south-facing wall covered with direct-GF in Suzhou, China. Three points on the wall at the same height but different foliage thicknesses where measured as shown in Table 7, it can be noticed that higher foliage thickness means higher LAI does not always means stronger thermal performance.…”

Section: Effect Of Plant Characteristicsmentioning

confidence: 99%

Vertical Greenery Systems: A Review of Factors Influencing Their Thermal Performance

2023

MSA Engineering Journal

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Urbanization and rapidly growing population change cities' features and convert them to concrete jungles with more buildings and fewer green areas. This bad conversion cause number of aesthetic, economical, and environmental issues like air and water pollution, higher energy consumption, increasing air temperature which lead to discomfort in outdoor and indoor environments. Vertical greenery systems (VGSs) stand as one of the green infrastructure features used to indemnify the lack of horizontal greenery and enhance the building envelop interaction towards the internal and external environment.Vertical greenery systems are living and dynamic component. Many studies have been conducted to recoginse how vertical greenery systems work and what affect their thermal performance. This paper aims to provide a deep understanding of different factors that affect the impact of this vegetated wall. These factors fall into two main categories: building-related factors and greeneryrelated factors. Comprehensive review of the variables influencing VGS performance will lead to better design decisions for VGS elements and will improve utilization potentials.

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Influence of foliage thickness on thermal performance of green façades in hot and humid climate

Cited by 30 publications

References 39 publications

On the Thermal Stresses Due to Weathering in Natural Stones

On the Thermal Stresses Due to Weathering in Natural Stones

Energy Saving Aspects of Green Facades: Current Applications and Challenges

Vertical Greenery Systems: A Review of Factors Influencing Their Thermal Performance

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