The development of technical solutions of enclosing structures with using local thermal insulation materials for energy-efficient buildings of the Lviv region
Students Name: Chaus Rostyslav Tarasovych
Qualification Level: magister
Speciality: Building Constructions, Products and Materials Technologies
Institute: Institute of Civil Engineering and Building Systems
Mode of Study: full
Academic Year: 2022-2023 н.р.
Language of Defence: англійська
Abstract: Chaus R.T., Marushchak U.D. (supervisor). Development of technical solutions for enclosing structures using local thermal insulation materials for energy-efficient buildings of the Lviv region. Master’s thesis. – Lviv Polytechnic National University, Lviv, 2022. Extended abstract. The master’s thesis is devoted to the development of technical solutions of enclosing structures using local thermal insulation materials to increase the energy efficiency of buildings during new construction, reconstruction and thermal modernization. The housing and communal sector is the most energy-intensive in the structure of the national economy of Ukraine. The main reason for excessively high energy consumption of housing and communal services is their low energy efficiency [1, 2]. In most residential buildings, the need for heating is 300-500 kWh/m2 per year, which is 2-6 times higher than the new standards adopted in Ukraine and the achieved indicators in European countries [3]. Increasing the energy efficiency of the construction sector is a priority on the way to Ukraine’s energy independence and ensuring national energy security, especially against the background of the constant increase in the cost of energy resources and massive terrorist attacks on our country’s energy infrastructure. This approach determines the need for thermal modernization of the existing housing stock and the design of new buildings that meet energy efficiency requirements. Minimization of heat loss through enclosing structures is important for reducing energy consumption and energy consumption of buildings, which is achieved by the development and implementation of technical solutions with increased heat transfer resistance due to the use of effective wall and heat-insulating building materials, the effectiveness of which is determined at the stage of manufacture, installation (erection) and operation [ 4]. In recent years, much attention has been paid to the wide use of industrial and agricultural waste in the technology of obtaining composite materials [5]. The use of local materials based on plant waste as raw materials for the production of heat-insulating materials has become especially relevant. This will make it possible to expand waste disposal and obtain cheap local raw materials, including production waste as raw materials. The object of the research is energy-efficient buildings with technical solutions of enclosing structures using local thermal insulation materials. The subject of the research is technical solutions of enclosing structures using local thermal insulation materials. The purpose of the research: to develop technical solutions for enclosing structures using local thermal insulation materials to increase the energy efficiency of buildings. Results of the research: - the analysis of the energy efficiency of buildings in Ukraine, the market of thermal insulation materials, requirements for thermal insulation materials was carried out. An overview of thermal insulation materials based on local raw materials was conducted; - technical solutions for external enclosing structures insulated with local thermal insulation materials have been developed. The calculation of thermal technical characteristics and heat-moisture regime of enclosing structures was carried out; - the energy efficiency indicators of a residential individual house after warming with heat-insulating materials based on local raw materials for the external conditions of the Lviv region were calculated, and its energy efficiency class was determined. The ecological indicators of the building were determined and a comparative analysis of the energy-efficient indicators of the residential building was carried out; - the analysis of the obtained research results was performed and conclusions were formulated regarding the possibilities of increasing the energy efficiency of buildings, using technical solutions of enclosing structures with local thermal insulation materials; - an analysis of the economic efficiency of the proposed technical solutions was performed. The use of heat-insulating materials based on local raw materials for the insulation of external wall structures made of ceramic, silicate brick and aerated concrete ensures a favorable humidity regime regarding the impossibility of condensation of water vapor in the thickness of the structure. The calculation of the energy consumption of an individual house showed that when using local thermal insulation materials for wall and floor insulation, energy efficiency class C is achieved. The specific primary energy consumption of the residential object is 127.8 kWh/m2, while the specific amount of greenhouse gas emissions decreases up to 37.2 kg/m2. Key words - thermal insulation material, local raw materials, building, energy efficiency, heat transfer resistance. List of used literature sources. 1. Farenyuk, G.G. & Tishkovets, A.V. (2017). Global trends in energy efficiency of buildings. Science and construction. 2. Sanitsky, M.A., Poznyak, O.R. & Marushchak, U.D. (2012). Energy-saving technologies in construction: textbook. Manual. Lviv: Lviv Polytechnic Publishing House. 3. A policy framework for climate and energy in the period from 2020 to 2030 - 22.1.2014 COM (2014), 15 final Communication From The Commission To The European Parliament, The Council, The European Economic And Social Committee And The Committee Of The Regions. 4. Sanytsky, M., Sekret, R. & Wojcikiewiez, M. (2012). Energetic and ecological analysis of energy-saving and passivehouses. SSP-Journal of CivilEngineering. Vol. 7. Issue 1. 71–78. 5. Xu, R., He, T., Da, Y., Liu, Y., Li, J. & Chen C. (2019). Utilizing wood fiber produced with wood waste to reinforce autoclaved aerated concrete Construction and Building Materials. 208. 242-249.