Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in Buildings

Jezierski, Walery; Sadowska, B.; Pawłowski, K.

doi:10.3390/en14010056

Cited by 20 publications

(19 citation statements)

References 4 publications

(5 reference statements)

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“…Currently, commonly used glazing in buildings is characterized by much worse insulation parameters than other building partitions [10]. Therefore, they provide a pathway for significant heat transfer between the indoor and outdoor environments.…”

Section: Introduction 1research Significancementioning

confidence: 99%

Computational Modelling of VIG Plates Using FEM: Static and Dynamic Analysis

et al. 2022

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Vacuum insulated glass (VIG) panels are becoming more and more popular due to their good thermal performance. Little information about the mechanical or strength parameters, which are crucial for the durability of a window, might be found in the published papers. The purpose of this work was to analyse the impact of different parameters on VIG panels’ mechanical properties. Parameter diversity refers to both geometrical and material characteristics. Static and dynamic analyses using the finite element method (ABAQUS program) were conducted. In addition, 101 various numerical models, created with the use of Python language, were tested. The changes of geometrical parameters were made with constant material parameters and the reverse. It has been concluded that pillars’ material and geometrical properties are crucial considering not only the static response of the VIG plates, but also the dynamic one. Moreover, it was proven that getting rid of the first row of pillars near every edge seal led to an increase in deflection of the glass panes. Additionally, considering results for dynamic response associated with out-of-phase vibrations, spacing between support pillars should be large enough in order to avoid possible damage to the glass pane due to rapidly decreasing distance between them. Further research opportunities have been described.

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Section: Introduction 1research Significancementioning

confidence: 99%

Computational Modelling of VIG Plates Using FEM: Static and Dynamic Analysis

et al. 2022

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“…Because of the rising energy prices and environmental pollution since the end of 1980s, energy conservation emerged as one of the most important economic and policy issues. Numerous efficiency-related law regulations and support schemes have been introduced for these purposes [1][2][3][4][5]. In 1998, the Thermal Modernization Law was introduced [6] and the Thermal Modernization Fund was put into service [7].…”

Section: Introductionmentioning

confidence: 99%

“…Between 1954 and 1979, there were built in Poland 17.9 thousand (46%) educational buildings, for a total of 38.9 thousand estimated in 2010 [26]. Their heating demand is relatively high due to the liberal requirements of thermal protection of buildings at that time [5]. Recent national evaluation [20] indicates that 60% of educational buildings have improved energy performance.…”

Section: Introductionmentioning

confidence: 99%

Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building

2021

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Thermal refurbishment of buildings results in certain energy, financial, and environmental effects. Such investments are financially supported in Poland after meeting the legally defined conditions of thermal protection and energy consumption. This paper presents a complex thermal modernization of a school building, performed by following Polish regulations. A detailed description of the studied object was given, and the calculation procedure was described. Then an optimal variant of an investment and an ex-post analysis were described. Simple payback time (SPBT) of modernization measures was from 15.8 years (insulation of the ceiling under the unheated attic) to 87 years for insulation of the wooden external wall, with 35.6 years for the whole project, which is shorter than the predicted lifespan of the whole building (50–70 years). Annual calculated heating demand decreased from 464.78 to 168.73 GJ, resulting in the primary energy consumption indicator (EP) of 484.44 and 129.46 kWh/m2, respectively. Thermal refurbishment with the replacement of an old boiler into a new wood-pellet one resulted in a significant reduction of SO2 and dust emissions from 451 to 27.5 kg and from 399 to 13 kg, respectively.

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“…A sustainable renovation and investment process encompasses the creation of a complete life cycle of a building or structure-from the production, transport, and assembly of materials, to maintenance during operation, and then to the Life Cycle Assessment (LCA) group [18][19][20][21][38][39][40]. An essential aspect of sustainable development is the concept of sustainable energy, defined as an energy efficient way of producing and using energy that has less harmful effects on the environment [23,[41][42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

“…Buildings account for more than 30% of total energy consumption. Due to rising energy prices and environmental pollution, energy savings has become one of the most important economic and political objectives since the late 1980s, so numerous efficiency-related regulations and support schemes have been introduced [23,37,40,44,46,[48][49][50][51][52][53][54][55][56].…”

Section: Introductionmentioning

confidence: 99%

Old and Modern Wooden Buildings in the Context of Sustainable Development

2021

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Construction is a powerful industry that is not indifferent to the environment. Neither the maintenance of buildings in a proper technical condition nor their eventual demolition is indifferent to the environment. The main threats to the environment are still the inefficient use of construction materials and energy needed for their production and installation, as well as the emission of harmful substances to the environment at the stage of operation of buildings and their demolition. This article discusses the importance of wood as a renewable material in terms of its physical and mechanical properties. The restoration of forest areas is of great importance to the global ecosystem and the sustainable development system, reducing the threat of global warming and the greenhouse effect by reducing CO2 levels. In addition, demolition wood can be reused in construction, can be safely recycled as it quickly decomposes, or can be used as a source of renewable energy. The preservation of existing timber-framed buildings in good condition contributes to a lower consumption of this raw material for repair, which already significantly reduces the energy required for their manufacture, transport, and assembly. This also reduces the amount of waste that would have to be disposed of in various ways. Both at the stage of design, execution, and then exploitation, one forgets about the physical processes taking place inside the partitions and about the external climatic influences of the environment (precipitation, water vapor, and temperature) on which the type, intensity, and extent of chemical and biological corrosion depend to a very high degree. This paper presents examples of the influence of such impacts on the operational safety of three selected objects: a feed storehouse and an officer casino building from the second half of the nineteenth century and an 18th century rural homestead building. The research carried out on wooden structures of the above-mentioned objects “in situ” was verified by means of simulation models, which presented their initial and current technical conditions in relation to the type and amount of impact they should safely absorb. Moreover, within the framework of this paper, artificial intelligence methods have been implemented to predict the biological corrosion of the structures studied. The aim of the paper was to draw attention to the timber already built into buildings, which may constitute waste even after several years of operation, requiring disposal and at the same time the production of a substitute. The purpose of the research carried out by the authors of the article was to examine the older and newer buildings in use, the structures of which, in whole or in part, were made of wood. On a global scale, there will be considerable demand for the energy required to thermally dispose of this waste or to deposit it in landfills with very limited capacity until its complete biological decomposition. These energy demands and greenhouse gas emissions can be prevented by effective diagnostics of such structures and the predictability of their behaviour over time, with respect to the conditions under which they are operated. The authors of the article, during each assessment of the technical condition of a building containing wooden elements, analysed the condition of their protection each time and predicted the period of their safe life without the need for additional reinforcements or replacement by others. As the later reality shows, it is a very effective method of saving money and energy.

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Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in Buildings

Cited by 20 publications

References 4 publications

Computational Modelling of VIG Plates Using FEM: Static and Dynamic Analysis

Computational Modelling of VIG Plates Using FEM: Static and Dynamic Analysis

Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building

Old and Modern Wooden Buildings in the Context of Sustainable Development

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