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    Wyświetlanie 1-2 z 2
    Tytuł:
    Energy and environmental analysis of a CCHP system used in industrial facility
    Autorzy:
    Bugaj, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2032959.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    CCHP
    energy characteristics
    CHP
    charakterystyka energetyczna
    Opis:
    The paper concentrates on problems of introducing a combined cooling, heating, and power (CCHP) system into an industrial facility with well-defined demand profiles of cooling, heating, and electricity. Environmental and energy evaluation covering the proposed CCHP system (Case 2) and the reference system (Case 1) has been carried out. The conventional system consists of three typical methods of energy supply: a) electricity from an external grid, b) heat from gas-fired boilers, and c) cooling from vapor compression chillers run by electricity from the grid. The CCHP system contains the combined heat and power (CHP) plant with a gas turbine–compressor arrangement and water/lithium bromide absorption chiller of a single-effect type. Those two cases were analyzed in terms of annual primary energy consumption as well as annual emissions of CO2, NOx, and SO2. The results of the analysis show the primary energy savings of the CCHP system in comparison with the reference system. Furthermore, the environmental impact of the CCHP application, in the form of pollutant emission reductions, compares quite favorably with the reference conventional system.
    Źródło:
    Environment Protection Engineering; 2020, 46, 3; 109-120
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A novel dry granule preparation technology and comparison of granule properties with conventional wet system for ceramic tiles production
    Autorzy:
    Ergin, Hasan
    Taşkıran, Mehmet Uğur
    Pilevne, Ahmet Atınç
    Turgut, Hatice
    Kayacı, Kağan
    Powiązania:
    https://bibliotekanauki.pl/articles/24148612.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    ceramic tile
    dry granulation
    energy consumption
    granule characteristics
    Opis:
    The ceramic tile manufacturing process uses a lot of energy, mainly thermal energy, and to a lesser extent electric energy. Total energy costs account for between 50% and 55% of average direct manufacturing costs. Fossil fuel combustion, such as natural gas combustion, produces carbon dioxide emissions. Therefore, energy consumption and emissions issues are vitally important for both environmental effects and process costs in ceramic tile manufacturing. The wet process of granule production systems including wet grinding and spray drying is widely used for the production of granules. Although there is high energy consumption for the water evaporation in the spray dryer, it ensures to produce high quality tile for many years. In this study, important granule properties were introduced for a novel dry granule production system. In the successful application of a dry granulation system, the conformity of produced granules is vitally important such as particle size distribution, bulk density, flow properties, and moisture of granules and conformity for the pressing process. This paper includes the comparative studies for properties of granules produced in spray dryer and new dry granule preparation systems and the full results of the industrial trials with these granules. The cost comparison of both granule production systems was also made for the same raw material usage. The natural gas consumption and water consumption were reduced respectively from 46 to 15 m3/ton and from 540 to 95 liters/ton in the new dry granulation system while electricity consumption and maintenance costs remain almost the same in both systems.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2023, 59, 5; art. no. 167498
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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