Search results for: Adam Ujma
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Izolacje > 2022 > R. 27, nr 5 > 36--42
Przedmiotem artykułu są wybrane wymagania i właściwości charakteryzujące konstrukcje przegród z ogrzewaniem podłogowym. Autor analizuje wymagania odnoszące się do ochrony cieplnej podłóg oraz izolacyjność cieplną podłóg ogrzewanych. Podaje także charakterystykę podłóg pod względem odczuć komfortu cieplnego.
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Budownictwo o Zoptymalizowanym Potencjale Energetycznym > 2022 > Vol. 11 > 163--170
People modify 56% of the Earth’s land. The world trend is changing from rapacious to considered influence such as green construction/production. Nevertheless, the terroristic war of the Russian federation against Ukraine causes the chaotic destruction and snowballing emissions from shell bursts and fires. Reclamation of land should attempt to repair the hugely dangerous influence of this, especially...
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The article presents research aimed at determining the thermal properties of tent fabric and, as the final result, the value of the heat transfer coefficient of the thermal protection of a pneumatic tent. It was assumed that the thermal insulation capacity of the tent cover, consisting of two fabric layers separated by an air gap, was determined for two seasons, summer and winter. The tested material...
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The development of many branches of modern production is inextricably linked with the development of new materials with a certain complex of mechanical, physio-chemical and technological properties. One of the effective ways to obtain materials with clearly defined properties is powder metallurgy. Materials obtained by pressing the powder usually have a high residual porosity. In order to improve...
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This article presents a literature review into the current state of the theory and practice of spraying complex titanium and zirconium nitride on steel P6M5, as well as a study of the effect of spraying time on the structural and mechanical characteristics of the applied coating. With the help of microstructural analysis and the measurement of the mechanical properties of the sprayed layers, it was...
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The numerical simulation results of the thermal scheme of a power plant related to steam and organic cycles are presented. The rational parameters of the cycles of the geothermal energy conversion unit have been determined. In addition, various organic working fluids are studied. The rational parameters of the thermodynamic cycles at a geothermal fluid temperature of 250°C have also been defined.
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Global competition is setting new rules for the release and sale of products. Success is possible thanks to the introduction of effective tools in modern information technologies, which allow simulation of the process of production and supply, calculate the time spent and eliminate problematic issues with production, etc. Production planning, the first stage of product creation, is possible through...
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The paper provides an innovative - simplified and economical - method for constructing a dome-shaped roof that has become quite an urgent issue due to the development in the field of construction as well as large-scale ongoing construction of churches, monastery buildings, necropolis and other domed buildings over the last years in recent years in Georgia and other countries. With respect to construction,...
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Ecological and hydrological problems of water reservoirs on rivers of the Black Sea coast in the context of the increasing air temperature and emissions of greenhouse gases, the melting of glaciers, and the occurrence of floods and forest fires have been analysed in the given article. The article presents the results of field and theoretical studies of sedimentation processes in the large water reservoirs...
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Currently, a very big problem of cities in Europe and the world is air pollution with combustion products of car fuels, generation of heat and electricity. These impurities affect the microclimate of cities significantly. Pollution not only affects the area outside buildings, but getting into their interior through ventilation systems, which has an adverse effect on the indoor environment of buildings...
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Moisture sorption is one of the most important destruction factors for colloidal capillary-porous exhibits in museums (painting, clothing etc.), which is dependent on microclimate in museum rooms. The analysis of moisture sorption properties, kinetics of sorption and swelling of textile museum exhibits is carried out. Isotherms of desorption of viscose and woollen yarns and fabrics of different density...
