Numerical Comparison of Thermal Behaviour Between Ventilated Facades

Schabowicz, Krzysztof; Zawiślak, Łukasz

doi:10.2478/sgem-2019-0044

Cited by 5 publications

(3 citation statements)

References 10 publications

(14 reference statements)

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“…During the useful life of the building, a considerable amount of energy is lost and gained through the envelope. Consequently, improving the energy performance of the façade can significantly reduce the cooling and heating demand [1,2].…”

Section: Introductionmentioning

confidence: 99%

Energy performance of ventilated façades; the influence of the colour and the air channel dimension

Roig,

Pardal,

Isalgue

et al. 2023

J. Phys.: Conf. Ser.

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Due to the current climate crisis, there is an urgent need to reduce greenhouse gas emissions. Improving façades’ energy performance can significantly reduce the cooling and heating demand of a building. More and more, in warm and mild climates, ventilated façade are given the function of avoiding overheating due to solar radiation and thus reducing the cooling demand of the building. However, this system’s energy performance is not easy to estimate. This study aims to assess the influence of some defining parameters of the ventilated façade on its energy performance. These parameters are not considered in the usual evaluation systems and can be relevant to the envelope’s energy performance. A calculation system has been developed so that architects can use it during the design process to know how their design decisions influence energy performance. Once validated with comparisons with measured values, the calculation system is applied to analyse the influence of some defining parameters of the façade during a warm day in Barcelona: the outer surface’s colour and the dimensions of the ventilation channel. For the studied cases, the change of these parameters implies an important variation in the daily average energy flow traversing the façade. In some cases, it even reverses the direction of the flow, changing from heat gains to heat losses. This concludes that these parameters are relevant to the energy performance of the ventilated façade and that the developed calculation system is a suitable tool to compute it.

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Section: Introductionmentioning

confidence: 99%

Energy performance of ventilated façades; the influence of the colour and the air channel dimension

Roig,

Pardal,

Isalgue

et al. 2023

J. Phys.: Conf. Ser.

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“…Several studies of theoretical thermal behavior and computational simulations applied to ventilated façades are addressed in the literature, 4,8,11,26,27 including the effects of airflows 6,28,29 …”

Section: Introductionmentioning

confidence: 99%

Thermal evaluation of the use of porous ceramic plates on ventilated façades—part II: Thermal behavior

Pizzatto

Angioletto

et al. 2021

Int J Applied Ceramic Tech

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The effects of porous ceramic plates on the thermal behavior of ventilated façades were evaluated, and the results are presented herein. Thermal behavior in a ventilated façade of specimens containing 40 wt% of lime mud and a firing temperature of 1100°C was evaluated and compared with a commercial porcelain ceramic tile, which was the reference material. An experimental apparatus was designed to evaluate the thermal performance of the studied ventilated façades. The results revealed that the ventilated façade composed of the studied porous ceramic tiles produced a greater reduction in temperature between the external environmental and the interior of a box representing a building (ΔT5) of 65.7°C, compared with the façade composed of the commercial porcelain ceramic tiles (ΔT5 = 56.0°C) and even the traditional façade (ΔT5 = 49.1°C). Thus, porous ceramic tiles based on byproducts are promising candidates for ventilated façade systems.

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“…Secondly, regarding the open-joint ventilated façade developed, due to the complexity of existing software, some values to analyse the effect of the ventilated façade on the buildings' energy consumption are based on previous research. Studies with similar designs and technologies present the scenarios' temperature differences, making the predictions of energy savings percentage for the complete building difficult(Sanjuan et al, 2011;Schabowicz & Zawiślak, 2021). Therefore, a review study regarding ventilated façades(Ibañez-Puy et al, 2017) was used to define the expected energy percentage reduction destined for summer comfort with the addition of a ventilated façade.…”

mentioning

confidence: 99%

Circular, biomimicry-based, and energy-efficient façade development for renovating terraced dwellings in the Netherlands

Bitar

Bergmans

Ritzen

2022

JFDE

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Many studies concerning lowering the Operational Energy (OE) of existing dwellings have been conducted. However, those studies barely cover its collateral Embodied Energy (EE). As the Circular Economy is gaining momentum and the balance between OE and EE is shifting, the Life Cycle Energy Performance (LCEP) is becoming increasingly relevant as an indicator. LCEP accounts for all the OE and EE a building consumes during its lifespan. However, clear insights into the LCEP are still to be investigated. This study focuses on developing a circular and energy-efficient renovation solution for a common terraced dwelling typology in the Netherlands. The energy-efficient renovation is based on three circular strategies: Biomimicry, Urban Mining, and Design for Disassembly (DfD), covering the aspects of EE and future reuse of building materials and components. The developed renovation solution reduces 82% of the LCEP compared to the existing scenario. With additional photovoltaic (PV) modules, the dwelling reduces 100% of the LCEP. Applying biomimicry, urban mining, and DfD-based renovation can significantly lower the overall LCEP and its collateral environmental impacts to achieve a Life Cycle Zero Energy circular renovation.

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Numerical Comparison of Thermal Behaviour Between Ventilated Facades

Cited by 5 publications

References 10 publications

Energy performance of ventilated façades; the influence of the colour and the air channel dimension

Energy performance of ventilated façades; the influence of the colour and the air channel dimension

Thermal evaluation of the use of porous ceramic plates on ventilated façades—part II: Thermal behavior

Circular, biomimicry-based, and energy-efficient façade development for renovating terraced dwellings in the Netherlands

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