Vacuum insulation panels in construction solutions for energy efficient retrofitting of buildings. Two case studies in Spain and Sweden

Uriarte, Amaia; Garai, Iñigo; Ferdinando, Andrew; Erkoreka, Aitor; Nicolas, Olatz; Barreiro, Eneritz

doi:10.1016/j.enbuild.2019.05.039

Cited by 31 publications

(10 citation statements)

References 12 publications

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“…Envelope technologies reviewed concentrated on external and internal walls, windows and doors, floors and roof systems. Studies addressed insulation problems, cavity wall construction, double glazing, smart glazing and façade systems [14,32,33,66]. Cascone et al [32] conforms to the concept of energy refurbishment, indoor thermal comfort and well-being.…”

Section: Envelope Technologiesmentioning

confidence: 99%

“…It was observed that installation of a solar film to retrofit a double-glazing system reduces annual HVAC energy consumption by up to 20% [58]. In parts of Europe, particularly Spain and Sweden, the vacuum and insulation panels (VIPs) as solutions to energy efficiency of existing buildings were undertaken by Uriarte et al [14]. Over the years, VIPs are applied in conjunction with façade cladding elements, considerably reducing heat losses or gains from a building by means of very slim wall construction systems or retrofit solutions.…”

Section: Envelope Technologiesmentioning

confidence: 99%

“…Studies on envelope technologies and systems indicate emphasis on renovations but unfocused although energy savings have been reported. Adoption and use of passively ventilated cavity walls, vacuum insulation and structural concrete insulated panels are environmentally friendly with energy saving potentials [13,14]. Also, installation of green roof systems has been explored in many parts of the world [15] and the decision to demolish and rebuild existing buildings likely to yield energy saving benefits and actions towards environmental sustainability [16].…”

Section: Introductionmentioning

confidence: 99%

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A review of sustainable technologies for energy efficient upgrade of existing buildings and systems

Dadzie

Pratt²,

Frimpong-Asante³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Sustainable upgrades include actual case studies with before and after retrofit results, case studies with simulated results and use of computer systems to predict energy savings based on exiting building parameters. In the latter no actual renovations are done thus technologies and systems are assumed. The review used real cases including simulations and adopts a mix of systematic and content analysis approaches. Thus, over 288 articles were gathered from all the major scientific journals using Scopus, ProQuest, Web of Science etc. The sample was reduced to 230 articles based on the search themes; thereafter, a detailed focus on the methods used provided basis to trim the articles to 47. Sustainable technologies identified cover those installed to the external façade, indoor areas, air filtration, insulation systems, building elements, heating, ventilation and cooling (HVAC) systems, sensors, lighting, hot and cold water systems such as boilers, chillers, pumps, motors and renewable energy technologies. The results show sustainable technologies have been used to improve various existing buildings. Also, the results indicate high rate of adoption of insulation systems for external and internal walls, roofing and ceiling elements. This paper provides evidence to support the drive towards environmental sustainability through the adoption and installation of sustainable technologies. Policies to trigger demand and installation could further improve actions towards greenhouse gas reduction.

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Section: Envelope Technologiesmentioning

confidence: 99%

Section: Envelope Technologiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A review of sustainable technologies for energy efficient upgrade of existing buildings and systems

Dadzie

Pratt²,

Frimpong-Asante³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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show abstract

“…Ferrante and Semprini [48] iterated that retrofitting constitute light to radical means of improving energy performance in urban buildings. Several studies [49][50][51] have performed comprehensive analyses on retrofit as an emerging and cost-efficient approach to fulfilling energy demand in buildings. Most of these studies used buildings in Europe as case studies; however, they did not consider the specific application proposed in this study (the replacement of existing electric heaters with heat pump systems for cooling/heating and hot waters).…”

Section: Overview Of Energy Demand In Buildingsmentioning

confidence: 99%

Building Retrofit and Energy Conservation/Efficiency Review: A Techno-Environ-Economic Assessment of Heat Pump System Retrofit in Housing Stock

et al. 2021

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The world has not been able to achieve minimum greenhouse gas emissions in buildings’ energy consumptions because the energy and emissions optimization techniques have not been fully utilized. Thermal comfort is one of the most important issues for both residential and commercial buildings. Out of the 40% of global energy consumed by buildings, a large fraction is used to maintain their thermal comfort. In this study, a comprehensive review of the recent advancements in building energy conservation and efficiency application is presented based on existing high-quality research papers. Additionally, the retrofit of the heating/cooling and hot water system for an entire community in Cyprus is presented. This study aims to analyze the technical and environmental benefits of replacing existing electric heaters for hot water with heat pump water heating systems and the use of heat pump air conditioners for thermal comfort in place of the existing ordinary air conditioners for space heating and cooling. One administrative building, 86 apartments (including residential and commercial) buildings, and a restaurant building is retrofitted, and the feasibility of the project is determined based on three economic indicators, namely; simple payback period (SPP), internal rate of return (IRR), and net present value (NPV). The electrical energy required by the hot water systems and the heating/cooling system is reduced by 263,564 kWh/yr and 144,825 kWh/yr, respectively. Additionally, the retrofit project will reduce Cyprus’ CO2 emission by 121,592.8 kg yearly. The SPP, IRR, and NPV for the project show that the retrofit is economically feasible.

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“…To satisfy energy requirements in the construction field, new insulating materials with a high porosity and with reduced material densities have been developed, but further reduction in thermal conductivity is still desirable for more effective insulation [3][4][5]. While VIPs are also being used in buildings for insulation purposes, there are limitations in their widespread application because of the relatively expensive insulation techniques involved, as compared to other insulations [6], such as mineral wool and foamed polystyrene [7,8]. In order to overcome price limitations, a method for reducing VIP production costs is needed.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Lightweight Concrete Cores on the Thermal Performance of Vacuum Insulation Panels

et al. 2020

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The performance of vacuum insulation panels (VIPs) is strongly affected by several factors, such as panel thickness, design, quality of vacuum, and material type. In particular, the core materials inside VIPs significantly influence their overall performance. Despite their superior insulation performance, VIPs are limited in their widespread use as structural materials, because of their low material strength and the relatively expensive core materials. As an alternative core material that can compensate these limitations, foamed concrete, a type of lightweight concrete with very low density, can be used. In this study, two different types of foamed concrete were used as VIP core materials, with their effects on the thermal behavior of the VIPs having been evaluated using experimental and numerical methods. To confirm and generate numerical models for VIP analysis, micro-computed tomography (micro-CT) was utilized. The obtained results show that insulation effects increase effectively when panels with lightweight concrete are in a vacuum, and both foamed concrete types can be effectively used as VIP core materials.

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Vacuum insulation panels in construction solutions for energy efficient retrofitting of buildings. Two case studies in Spain and Sweden

Cited by 31 publications

References 12 publications

A review of sustainable technologies for energy efficient upgrade of existing buildings and systems

A review of sustainable technologies for energy efficient upgrade of existing buildings and systems

Building Retrofit and Energy Conservation/Efficiency Review: A Techno-Environ-Economic Assessment of Heat Pump System Retrofit in Housing Stock

The Effect of Lightweight Concrete Cores on the Thermal Performance of Vacuum Insulation Panels

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