Selected directions of increasing efficiency in supporting thermomodernization in buildings from public funding

Borys, Grażyna

doi:10.15611/pn.2015.397.05

Cited by 2 publications

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“…Energy efficiency solutions are also achieved through the appropriate choice of envelope insulation parameters (external and internal) and thickness based on relevant knowledge, specialist research, and analysis. Many researchers [5][6][7][8][9][10][11][12] agreed that to reduce the negative impact of buildings on excessive energy consumption and the environment, the implementation of efficient and already proven technologies, including those that use renewable energy sources, should be pursued through the careful development of detailed technical documentation [13,14]. Rey-Hernández et al [15] analysed strategies for achieving nearly zero energy buildings (NZEB) in Spain and showed that the primary energy rate, renewable energy generation, and the renewable energy rate can be useful tools for the analysis of the energy of NZEB as required by European regulations.…”

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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Section: Introductionmentioning

confidence: 99%

Old and Modern Wooden Buildings in the Context of Sustainable Development

2021

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“…Act on supporting thermo-modernization and renovation specifies the rules of financing them from the Thermo-Modernization and Renovation Fund [58][59][60]. It defines thermo-modernization projects as follows:…”

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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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Selected directions of increasing efficiency in supporting thermomodernization in buildings from public funding

Abstract: Małgorzata A. Olszak, Mateusz Pipień, Sylwia Roszkowska: Czy specyfika zastosowania rezerw na ryzyko kredytowe i ich procykliczność wpływają na związek między aktywnością kredytową i kapitałami dużych banków w Unii Europejskiej? .

Cited by 2 publications

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Old and Modern Wooden Buildings in the Context of Sustainable Development

Old and Modern Wooden Buildings in the Context of Sustainable Development

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

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