Thermal bridges in vacuum insulation panels at building scale

Isaia, Francesco; Fantucci, Stefano; Capozzoli, Alfonso; Perino, Marco

doi:10.1680/jensu.15.00057

Cited by 17 publications

(12 citation statements)

References 19 publications

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“…For instance, organic insulation materials are easy to burn and release toxic fumes when they burn, while inorganic insulation materials have high density and cost . In addition, the traditional insulation materials system with supporting elements usually cause problems such as cracking and point thermal bridge . Therefore, research and development of a novel building energy‐saving wall materials are necessary.…”

Section: Introductionmentioning

confidence: 99%

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Numerical assessing energy performance for building envelopes with phase change material

Zou

Chen

et al. 2018

Int J Energy Res

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Summary In hot climate, phase change material (PCM) can be incorporated into building envelopes to reduce heat gain through the building envelopes and therefore reduce its cooling demand. In this study, the energy performance of building envelopes integrated with PCM has been explored using a popular dynamic building performance simulation package, EnergyPlus, and the energy saving mechanism of PCM was investigated. The simulation results reflected that PCM could effectively help to reduce the building's annual energy consumption by 20.9% for Guangzhou, China. In addition, for the Guangzhou city, 27°C transition temperature, smaller thermal conductivity of roof, and higher amount of PCM can all help to improve the building's energy performance. Additionally, it is suggested that in real building development/retrofit projects, the selection of PCM needs to be based on both their thermal properties and the local climatic conditions of the building.

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Section: Introductionmentioning

confidence: 99%

“…9,10 In addition, the traditional insulation materials system with supporting elements usually cause problems such as cracking and point thermal bridge. 11,12 Therefore, research and development of a novel building energy-saving wall materials are necessary.…”

Section: Introductionmentioning

confidence: 99%

Numerical assessing energy performance for building envelopes with phase change material

Zou

Chen

et al. 2018

Int J Energy Res

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“…In the third paper of this issue, Baborska-Narozny and Stevenson (2017) discuss the underlying factors that contribute to the performance gap between design intentions and actual in-use performance in relation to the operation of continuous mechanical ventilation systems installed in two case study housing developments. Informed by the results of a 1-year-long in-depth building performance evaluation, the study develops a process diagram which identifies and situates the interdependencies between occupant and the dwelling environments in terms of ventilation practices.The final paper of this issue (Isaia et al, 2017) evaluates the thermal performance of a vacuum insulation panel, a promising technology that can potentially contribute to energy demand reduction in the building sector. The thermal properties of this superinsulation …”

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confidence: 99%

mentioning

confidence: 99%

“…The final paper of this issue (Isaia et al, 2017) evaluates the thermal performance of a vacuum insulation panel, a promising technology that can potentially contribute to energy demand reduction in the building sector. The thermal properties of this superinsulation material make it possible to obtain highly insulated building envelopes with low thickness, offering exciting opportunities for both new and retrofitted buildings.…”

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confidence: 99%

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Editorial

Calautit¹

2017

Proceedings of the Institution of Civil Engineers - Engineering

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in partnership with KES International. Annually, the conference brings together researchers and government and industry professionals to discuss the future of energy in buildings, neighbourhoods and cities from a theoretical, practical, implementation and simulation perspective.Built upon the success of previous conferences, the seventh conference in the SEB series attracted a large number of submissions from all around the world, which were subjected to a two-stage peer review process. With the objective of producing a high-quality conference, papers were selected for presentation at the conference and publication in the proceedings. The scope of Sustainability and Energy in Buildings is extensive and 57 oral presentations were delivered during SEB15. Extended and revised versions of the top eight articles, which were selected by the SEB scientific committee and Engineering Sustainability editorial panel, are included in this and a subsequent themed issue to disseminate further the leading research in this field first presented at SEB15. The selected papers cover emerging research topics in the areas of energy and buildings, including big data, renewable energy integration, energy performance gap, advanced materials and technologies in building construction, hybrid energy systems and smart cities.Recently, the big data concept has been gaining considerable attention for tackling complex and challenging engineering problems; in particular, it is notably impacting the civil engineering sector. Big data analytics is transforming the way civil infrastructure systems are constructed, operated and maintained. It provides valuable insights from a large amount of data collected through various sources to optimise decision-making, save energy, improve safety and reduce cost. Some of its applications in the civil engineering sector include structural health and environmental monitoring (Yeum et al., 2016), waste and water management, urban planning and operation (Tkachenko et al., 2015), smart buildings (Gruber et al., 2016) and mobility (Valdez et al., 2015). The first article in this issue presents a data mining-based methodology for setting decision-making rules to identify the energy consumption patterns of a large data set of flats and investigate different energy retrofit actions. The influence of four attributes on the normalised primary energy demand of 92 906 flats in northern Italy are analysed. The paper covers crucial aspects of practical relevance for authority planners and building energy experts and designers.Similar to the work of Capozzoli et al. (2017), the method proposed by Gagliano et al. (2017) in the second paper aims to support decision makers to estimate the energy consumption of residential, commercial and industrial buildings and evaluate the possible effects of different energy strategies. The complexity of urban energy supply and demand is increasing rapidly with the diversity of energy technologies that participate in the energy system, such as integration of renewables, electric vehicles, ...

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Simulation study of the thermal insulation performance of a vacuum‐insulated tube inside an electrically heated device

Zhang³

et al. 2023

Can J Chem Eng

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To realize stable heating of a heated cigarette while effectively controlling the outer‐wall temperature of an electric heating‐type appliance, a vacuum‐insulated tube (VIT) is currently widely used for thermal insulation against the heating element. The effects of the critical parameters of the VIT, gases at different pressures, wall thickness, and material on its thermal insulation performance, were simulated using Fluent to provide guidance on the structure and performance optimization of the EHD. When the absolute pressure of gas in the VIT was <0.5 Pa, increasing the degree of vacuum did not improve the thermal insulation performance. The thermal insulation performance of VITs made from different materials (stainless steel, copper, aluminium, brass, and titanium alloy) was closely related to the emissivity and thermal conductivity of the material. Stainless steel yielded better overall thermal insulation owing to its low thermal conductivity and emissivity. Highly emissive materials, such as brass and titanium alloy, contributed to higher heat transfers through the radiation inside the vacuum chamber and external radiation from the VIT, decreasing the thermal insulation performance of the VIT. Stainless steel VITs yielded an improved thermal insulation performance as the wall thickness decreased, but at the cost of decreased mechanical stability. For a wall thickness of 0.05–0.30 mm, stainless steel yielded the best structural stability. VITs with different wall thicknesses were made from stainless steel, copper, and aluminium, and the thermal insulation performance and structural stability of the EHD were optimized.

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Thermal bridges in vacuum insulation panels at building scale

Cited by 17 publications

References 19 publications

Numerical assessing energy performance for building envelopes with phase change material

Numerical assessing energy performance for building envelopes with phase change material

Editorial

Simulation study of the thermal insulation performance of a vacuum‐insulated tube inside an electrically heated device

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