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    Wyświetlanie 1-7 z 7
    Tytuł:
    Economic analysis of stationary and spatially optimized photovoltaic systems for Polish climatic conditions
    Autorzy:
    Bugała, A.
    Frydrychowicz-Jastrzębska, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/97238.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    tracking system
    economic balance
    photovoltaics
    payback time
    Opis:
    The paper presents the economic aspect of use two - axis Sun tracking systems compared with stationary units in photovoltaics on the basis of own annual measurements of electrical energy for local urban conditions. The results were scaled to maximum power of 10 kWp. Electricity consumption by positioning system and maintenance costs were included and estimated payback period of investment for different variants of settlement of produced energy, taking into account own financing, banking and preferential subsidies under the Prosumer program from the National Fund for Environmental Protection and Water Management, was calculated.
    Źródło:
    Computer Applications in Electrical Engineering; 2014, 12; 452-461
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sun tracking in PV systems aspects
    Autorzy:
    Frydrychowicz-Jastrzębska, G.
    Bugała, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/97242.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    photovoltaic system
    PV system
    sun tracking
    Źródło:
    Computer Applications in Electrical Engineering; 2012, 10; 333-346
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CIS, CIGS and CIBS thin film solar cells and possibilities of their application in BIPV
    Autorzy:
    Frydrychowicz-Jastrzębska, G.
    Bugała, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/97250.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    solar cell
    CIS
    heterojunction
    Light Soaking effect
    BIPV
    Opis:
    Photovoltaic thin–film solar cells have gained more and more popularity in recent years. As well as high efficiency, they have a number of properties allowing their application in BIPV. The paper presents thin film copper indium diselenide cells (CuInSe2 – CIS) and their modifications. Their electric and optical properties are characterised. The subject of presentation includes phenomena, which take place in these solutions as well as issues related to selection of absorbing–generating layers and a window layer, including the possibilities of solving these issues to obtain high efficiency of photovoltaic conversion. At present, the photovoltaic conversion is already at the level of 22.3% in laboratory conditions [29]. The examples of roof and facade applications of CIS with regards to buildings are provided.
    Źródło:
    Computer Applications in Electrical Engineering; 2016, 14; 364-377
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selected solutions in photovoltaic systems increasing their efficiency
    Autorzy:
    Frydrychowicz-Jastrzębska, G.
    Bugała, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/97495.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    solar cell
    concentrator
    PV module
    power gain
    Opis:
    The basic objective in photovoltaics is obtaining electrical energy with the costs comparable to the costs of energy obtained from conventional fuels. The effectiveness of acquisition of electrical energy from solar cells can be improved, among other things, by using solar radiation concentrators. Photovoltaic systems with low concentration (LCPV) and high concentration (HCPV) were characterised [13]. The possibilities of their operation under various conditions were presented, whereas the impact of temperature and concentration angle were considered in particular. The most modern solutions were presented, including Spin cell, Ephocell, Interdigitated Back Contact (IBC), Luminescent Solar Concentrator (LSC), High Concentration PhotoVoltaic Thermal (HCPVT), Concentration PhotoVoltaic (CPV), Telecontrolli. Results of current Polish research were given. In the years from 1985 to 2010 the increase from 17,5 % to 40,7 % in the efficiency of solar cells with concentrators was achieved [18].
    Źródło:
    Computer Applications in Electrical Engineering; 2014, 12; 462-474
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Single – axis sun tracking unit with sensor control
    Autorzy:
    Bugała, A.
    Frydrychowicz-Jastrzębska, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/97565.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    tracking system
    spatial orientation
    photovoltaics
    inclination angle
    microprocessor control
    Opis:
    The results of experimental verification of considerations conducted in [3] are presented, in terms of application single – axis tracking units, to increase the efficiency of the photovoltaic conversion, in comparison with fixed systems optimally oriented. The design and physical realization of a measurement stand is presented. A photovoltaic module inclination angle correlation algorithm, for a selected location and a measurement period, is described. The measurements were conducted in natural lighting conditions for different weather conditions. The current – voltage and power – voltage characteristics were compared for a fixed and vertically variable configuration. The value of the electric energy generated by tested photovoltaic modules in both cases was determined.
    Źródło:
    Computer Applications in Electrical Engineering; 2015, 13; 414-422
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of external conditions and orientation of PV module on the energetic gain
    Autorzy:
    Frydrychowicz-Jastrzębska, G.
    Bugała, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/97742.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    photovoltaic conversion
    double-axis tracker
    energetic gain
    external conditions
    Opis:
    Paper presents the influence of external conditions such as: the latitude φ, the solar declination δ, the hour angle ω, number of sunny hours, cloud cover and orientation of photovoltaic module on the energetic gain. The results of the measurements of radiation power density that reaches the surface of the PV receiver for its different positions, for the geographic location of the cities of Poznań and Playa del Ingles and for different time periods (yearly and daily) are presented in a graphical form. The study compares also production of electric power and energy in different weather conditions: cloudy, partly cloudy and cloudless sky using two- axis tracking system and fixed with one optimal angle setting during the year. Analyzed systems are located in Poznan on the roof of the Faculty of Electrical Engineering building. Distribution of power density of solar radiation in different days of the year was also compared.
    Źródło:
    Computer Applications in Electrical Engineering; 2013, 11; 423-439
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intelligent building systems
    Autorzy:
    Bugała, A.
    Frydrychowicz-Jastrzębska, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/97401.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    intelligent building systems
    intelligent building
    DomoSim
    intelligent house
    Opis:
    The paper characterizes some selected aspects of intelligent building technology. Various functions are described that enable optimal controlling of the devices operating in accordance with previously programmed instructions and with current information. Such control is aimed at ensuring economic functioning of the building by reasonable and sound management of its resources (chiefly the energy) and to guarantee safety and comfort of the inhabitants. Examples of realization of these functions are presented, together with the computation - visualization software. The DomoSim visualization - designing software is characterized, that is intended for control and automation purposes. Applications of the discussed systems in Energy-Saving Intelligent Houses (ESH) have been presented.
    Źródło:
    Computer Applications in Electrical Engineering; 2012, 10; 317-332
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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