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    Wyświetlanie 1-8 z 8
    Tytuł:
    Efficiency Analysis of the Generation of Energy in a Biogas CHP System and its Management in a Waste Landfill – Case Study
    Autorzy:
    Ciuła, Józef
    Generowicz, Agnieszka
    Gaska, Krzysztof
    Gronba-Chyła, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2173248.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    cogeneration
    energy efficiency
    energy ratio
    landfill gas
    municipal waste
    renewable energy
    Opis:
    As a waste neutralization facility, the landfill is a kind of bioreactor producing landfill gas or (LFG) - biogas, which should be captured and neutralised for environmental reasons. One of the ways of its utilisation is the combined production of heat and electrical energy in combined heat and power (CHP) cogeneration systems. For that purpose, the assessment of the energy efficiency of a cogeneration unit was undertaken in this work on the basis of the unit performance over the last 5 years. The analysis of the CHP system energy performance demonstrated that the ratios range at the lower limits for units up to 0.5 MW. The lower efficiency of fuel chemical conversion in the CHP plant (0.70) stems from the failure to use the rated thermal and electrical power fully (74.2%), which is caused by the insufficient stream of biogas collected from the landfill (161.46 m3∙h-1). The analysis of the generated energy usage, particularly in terms of heat, has shown a surplus which is not used and therefore is a loss. The proposed solutions in this area should optimize the use of heat generated from the renewable source, i.e. landfill biogas.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 7; 143--156
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Alternative method of making electrical connections in the 1st and 3rd generation modules as an effective way to improve module efficiency and reduce production costs
    Autorzy:
    Kwaśnicki, Paweł
    Gronba-Chyła, Anna
    Generowicz, Agnieszka
    Ciuła, Józef
    Wiewiórska, Iwona
    Gaska, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/27312219.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    photovoltaics
    busbars
    DSSC
    BIPV
    solar module
    Opis:
    In this work, we propose a new method for manufacturing busbars in photovoltaic modules for different solar cell generations, focusing on 1st and 3rd generations. The method is based on high-pressure spray coating using nanometric metallic powder. Our focus is primarily on optimizing conductive paths for applications involving conductive layers used in 3rd generation solar cells, such as quantum dot solar cell, dye-sensitized solar cell, and silicon-based solar cells on glass-glass architecture for buildingintegrated photovoltaic. The advantages of the proposed method include the possibility of reducing the material quantity in the conductive paths and creating various shapes on the surface, including bent substrates. This paper examines the influence of the proposed high-pressure spraying technique using metallic particles on the morphology of the resulting conductive paths, interface characteristics, and electrical parameters. Conductive paths were created on four different layers commonly used in photovoltaic systems, including transparent conductive oxide, Cu, Ti, and atomic layer deposition processed Al2O3. The use of high-pressure technology enables the production of conductive layers with strong adhesion to the substrate and precise control of the spatial parameters of conductive paths. Furthermore, the temperature recorded during the deposition process does not exceed 385 K, making this technique suitable for various types of substrates, including glass and silicon. Additionally, the produced layers exhibit low resistance, measuring less than 0.3 Ω. Finally, the mechanical resistance, as determined through tearing tests, as well as environmental and time stability, have been confirmed for the produced paths.
    Źródło:
    Archives of Thermodynamics; 2023, 44, 3; 179--200
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zero-Suppression Trigger Mode for GEM Detector Measurement System
    Autorzy:
    Kolasinski, Piotr
    Pozniak, Krzysztof
    Wojenski, Andrzej
    Linczuk, Pawel
    Krawczyk, Rafal
    Gaska, Michal
    Zabolotny, Wojciech
    Kasprowicz, Grzegorz
    Chernyshova, Maryna
    Czarski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1844608.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    FPGA
    GEM
    trigger
    sequencer
    DAQ
    Xilinx
    Opis:
    A novel approach to a trigger mode in the Gas Electron Multiplier (GEM) detector readout system is presented. The system is already installed at WEST tokamak. The article briefly describes the architecture of the GEM detector and the measurement system. Currently the system can work in two trigger modes: Global Trigger and Local Trigger. All trigger processing blocks are parts of the Charge Signal Sequencer module which is responsible for transferring data to the PC. Therefore, the article presents structure of the Sequencer with details about basic blocks, theirs functionality and output data configuration. The Sequencer with the trigger algorithms is implemented in an FPGA chip from Xilinx. Global Trigger, which is a default mode for the system, is not efficient and has limitations due to storing much data without any information. Local trigger which is under tests, removes data redundancy and is constructed to send only valid data, but the rest of the software, especially on the PC side, is still under development. Therefore authors propose the trigger mode which combines functionality of two existing modes. The proposed trigger, called Zero Suppression Trigger, is compatible with the existing interfaces of the PC software, but is also capable to verify and filter incoming signals and transfer only recognized events. The results of the implementation and simulation are presented.
    Źródło:
    International Journal of Electronics and Telecommunications; 2021, 67, 1; 103-108
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Soft X-ray Diagnostic System Upgrades and Data Quality Monitoring Features for Tokamak Usage
    Autorzy:
    Wojenski, Andrzej
    Linczuk, Paweł
    Piotr, Kolasinski
    Chernyshova, Maryna
    Mazon, Didier
    Kasprowicz, Grzegorz
    Pozniak, Krzysztof T.
    Gaska, Michał
    Czarski, Tomasz
    Krawczyk, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/1844595.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    data quality monitoring
    FPGA
    Verilog/VHDL
    HDL
    GEM detector
    SXR plasma diagnostics
    modular measurement system
    data evaluation
    tokamak
    Opis:
    The validation of the measurements quality after on-site diagnostic system installation is necessary in order to provide reliable data and output results. This topic is often neglected or not discussed in detail regarding measurement systems. In the paper recently installed system for soft X-ray measurements is described in introduction. The system is based on multichannel GEM detector and the data is collected and sent in special format to PC unit for further postprocessing. The unique feature of the system is the ability to compute final data based on raw data only. The raw data is selected upon algorithms by FPGA units. The FPGAs are connected to the analog frontend of the system and able to register all of the signals and collect the useful data. The interface used for data streaming is PCIe Gen2 x4 for each FPGA, therefore high throughput of the system is ensured. The paper then discusses the properties of the installation environment of the system and basic functionality mode. New features are described, both in theoretical and practical approach. New modes correspond to the data quality monitoring features implemented for the system, that provide extra information to the postprocessing stage and final algorithms. In the article is described also additional mode to perform hardware simulation of signals in a tokamak-like environment using FPGAs. The summary describes the implemented features of the data quality monitoring features and additional modes of the system.
    Źródło:
    International Journal of Electronics and Telecommunications; 2021, 67, 1; 109-114
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement Capabilities Upgrade of GEM Soft X-ray Measurement System for Hot Plasma Diagnostics
    Autorzy:
    Linczuk, Pawel
    Wojenski, Andrzej
    Kolasinski, Piotr
    Krawczyk, Rafal
    Zabolotny, Wojciech
    Pozniak, Krzysztof
    Chernyshova, Maryna
    Czarski, Tomasz
    Gaska, Michal
    Kasprowicz, Grzegorz
    Malinowski, Karol
    Powiązania:
    https://bibliotekanauki.pl/articles/1844588.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    measurement system
    GEM
    DAQ
    Opis:
    The paper presents improvements of the developed system for hot plasma radiation measurement in the soft Xray range based on a Gas Electron Multiplier (GEM) detector. Scope of work consists of a new solution for handling hardware time-synchronization with tokamak systems needed for better synchronization with other diagnostics and measurement quality. The paper describes the support of new modes of triggering on PC-side. There are communication and data path overview in the system. The new API is described, which provide separate channels for data and control and is more robust than the earlier solution. Work concentrates on stability and usability improvements of the implemented device providing better usage for end-user.
    Źródło:
    International Journal of Electronics and Telecommunications; 2021, 67, 1; 115-120
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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