Effect of the placement of aerogel insulation in the heat transfer properties

Lakatos, Ákos

doi:10.1007/s10973-017-6745-y

Cited by 11 publications

(4 citation statements)

References 17 publications

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“…Building envelope renovation Aerogel thermal insulation Lakatos, 2018;Baetens et al, 2011 Building integrated photovoltaics (BIPV) windows Miyazaki et al, 2005;Sun et al, 2018 Phase change materials (PCM) Aditya et al, 2017;Li et al, 2015 Ventilation system renovation Mechanical ventilation systems with heat recovery Liu et al, 2010;Steimle F, 1992;Jokisalo et al, 2003 Energy system renovation Photovoltaic (PV) panels Lang et al, 2015 Solar thermal systems Rad et al, 2013 Hybrid solar systems (Photovoltaic/Thermal (PV/T) panels, Solar assisted heat pump (SAHP)) systems properties, were fed into the IDA ICE building models to simulate the demo houses' conditions before renovation. These demo house models were calibrated by using the measured data of energy consumption and indoor climate (Hirvonen et al, 2022).…”

Section: Renovation Category Specific Renovation Technologies Relevan...mentioning

confidence: 99%

“…To reduce building energy consumption in the EU, many novel renovation technologies were developed, and their feasibility was verified in several studies. The most fundamental factor in lowering energy consumption is to reduce thermal resistance, particularly through improved insulation (Lakatos, 2018). Currently, aerogels are one of the most promising high-performance thermal insulation materials for building applications.…”

Section: Introductionmentioning

confidence: 99%

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CO2 Emissions Reduction Potential with Novel Energy Renovation Technologies in English and Spanish Climate Conditions

Wang,

Hirvonen,

et al. 2024

Future Cities and Environment

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As the building sector acts as an important CO 2 emissions source, it is essential to renovate the existing building stock for carbon neutrality in the EU. The study reveals the effects of several novel renovation technologies on building energy consumption and CO 2 emissions through building simulations. An English semi-detached house and a Spanish terraced house were chosen as the simulated demo houses. Renovation technologies were divided into passive, ventilation, and generation packages and simulated by packages and final combinations. Insulating breath membrane and bioaerogel thermal insulation are the most appropriate single technology for lowering CO 2 emissions for the English and Spanish demo houses, respectively. For generation technologies, solar assisted heat pump is a more recommended CO 2 emissions conservation technology than PVT system in both climate conditions. The demo houses' CO 2 emissions can be reduced maximally by over 70% after renovating with the final combination including solar assisted heat pump. The current economic feasibility of the novel technologies is limited by various issues, for example, manufacturing costs and energy prices. Nevertheless, considering most of the issues can be solved with time, they will be economically feasible renovation measures in the future.

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Section: Renovation Category Specific Renovation Technologies Relevan...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CO2 Emissions Reduction Potential with Novel Energy Renovation Technologies in English and Spanish Climate Conditions

Wang,

Hirvonen,

et al. 2024

Future Cities and Environment

View full text Add to dashboard Cite

show abstract

“…The new generation of insulation materials is represented by the nanotechnological insulators, particularly aerogel and hollow nanospheres. The boards based on silica-aerogel technology are promising for the future [24]. Various prototype insulation solutions have also appeared, such as special perlite boards or the above-mentioned aerogel composite materials [25].…”

Section: Selected Properties Of Available Thermal Insulation Materialsmentioning

confidence: 99%

The Analysis of Small Investors’ Demands on a Thermal Insulation System for a Family House: A Case Study

2021

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This study deals with small investors’ demands on thermal insulation systems when choosing the most suitable solution for a family house. By 2050, seventy percent of current buildings, including residential buildings, are still expected to be in operation. To reach carbon neutrality, it is necessary to reduce operational energy consumption and thus reduce the related cost of building operations and the cost of the life cycle of buildings. One solution is to adapt envelopes of buildings by proper insulation solutions. To choose an optimal thermal insulation system that will reduce energy consumption of building, it is necessary to consider the environmental cost of insulation materials in addition to the construction cost of the materials. The environmental cost of a material depends on the carbon footprint from the initial origin of the material. This study presents the results of a multi-criteria decision-making analysis, where five different contractors set the evaluation criteria for selection of the optimal thermal insulation system. In their decision-making, they involved the requirements of small investors. The most common requirements were selected: the construction cost, the construction time (represented by the total man-hours), the thermal conductivity coefficient, the diffusion resistance factor, and the reaction to fire. The confidences of the criteria were then determined with the help of the pairwise comparison method. This was followed by multi-criteria decision-making using the method of index coefficients, also known as the method of basic variant. The multi-criteria decision-making included thermal insulation systems based on polystyrene, mineral wool, thermal insulation plaster, and aerogels’ nanotechnology. As a result, it was concluded that, currently, in Slovakia, small investors emphasize the cost of material and the coefficient of thermal conductivity and they do not care as much about the carbon footprint of the material manufacturing, the importance of which is mentioned in this study.

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“…If we analyze the market for the insulation materials, it is clear that the most popular products are the artificial materials and mineral wool products represent about 50-55% and plastic foams about 40-45% of the total production [7]. To obtain the necessary data for designers, the examination of the thermal properties (e.g., effective thermal conductivity) of building materials and structures is very important [8], although the manufacturers present only the declared thermal properties of their newly produced materials. In material datasheets (technical specifications), declared thermal conductivity obtained mainly under dry material conditions, because thermal properties are favorable, when the sample is not moist.…”

Section: Introductionmentioning

confidence: 99%

Effect of built-in mineral wool insulations durability on its thermal and mechanical performance

Nagy

Simon

Nemes

2019

J Therm Anal Calorim

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Energy efficient buildings are unimaginable without highly insulating thermal envelopes. Mineral wool among others is a popular material for thermal insulation. Architects and engineers usually use the data given by the manufacturer in the specification of the material for their building physical design. Such data are obtained from laboratory measurements, carried out on non-aged, and dry samples. However, moisture could affect the thermal performance of insulation materials and may affect the durability too. In the research, we examined stone mineral wool hardboard thermal insulations, which were obtained from a flat roof. The samples looked differently: some of them were in good condition and maintained their load bearing capability, but some were spoiled and soft. We measured and compared the used samples' thermal conductivity, sorption isotherm and deformation under compressive force to new etalon samples. We also investigated the reason behind the lack of load bearing durability of the built-in and spoiled mineral wool boards using scanning electron microscopy and derivatography. In our study, we show how built-in conditions changed the thermal and mechanical properties and thermal performance of the mineral wool insulation layer, which could degrade by up to 40% in terms of thermal resistance under built-in conditions due to certain spoiling and production mistakes of mineral wool.

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Effect of the placement of aerogel insulation in the heat transfer properties

Cited by 11 publications

References 17 publications

CO2 Emissions Reduction Potential with Novel Energy Renovation Technologies in English and Spanish Climate Conditions

CO2 Emissions Reduction Potential with Novel Energy Renovation Technologies in English and Spanish Climate Conditions

The Analysis of Small Investors’ Demands on a Thermal Insulation System for a Family House: A Case Study

Effect of built-in mineral wool insulations durability on its thermal and mechanical performance

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