Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "partial load" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-8 z 8
    Tytuł:
    Numerical analysis of a serial connection of two staged SOFC stacks in a CHP system fed by methane using Aspen TECH
    Autorzy:
    Pianko-Oprych, Paulina
    Palus, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/779502.pdf
    Data publikacji:
    2019
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Solid Oxide Fuel Cell stacks
    Combined Heat and Power system
    Balance of Plant
    BoP
    modelling
    methane
    Catalytic Partial Oxidation
    CPOx
    reformer
    steam reformer
    part and full load
    steady state
    dynamic model
    Opis:
    The objective of the study was to develop a steady-state system model in Aspen TECH using user-defined subroutines to predict the SOFC electrochemical performance. In order to achieve high overall fuel utilization and thus high electrical efficiency, a concept of Combined Heat and Power system with two-stage SOFC stacks of different number of cells was analyzed. The concept of two-stage SOFC stacks based system was developed in the framework of the FP7 EU-funded project STAGE-SOFC. The model was validated against data gathered during the operation of the proof-of-concept showing good agreement with the comparative simulation data. Following model validation, further simulations were performed for different values of fuel utilization to analyze its influence on system electrical performance. Simulation results showed that the concept of two-stage SOFC stacks configuration was viable and reliable. The model can be useful for development the optimal control strategy for system under safe conditions.
    Źródło:
    Polish Journal of Chemical Technology; 2019, 21, 1; 33-43
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reduction of electric locomotives energy consumption by scalable tractive power control
    Autorzy:
    Andryushchenko, A.
    Kolpahchyan, P.
    Zarifyan, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/375431.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    electric locomotive
    energy efficiency
    multi-engine
    electric traction drive
    partial load
    scalable tractive power control
    lokomotywa elektryczna
    efektywność energetyczna
    multi-silnik
    elektryczny napęd trakcyjny
    obciążenie częściowe
    Opis:
    At the beginning of the paper, the analysis of energy efficiency indicators for freight electric locomotive with asynchronous traction drive feeding from AC network under various operating conditions including when working with trains of various masses is made. The movement on different railway sections is considered. The graphs of locomotive’s speed, traction force, consumed power, and power for the traction obtained by on-board recorder are shown. In addition, the dependence of the locomotive's energy efficiency from the degree of using of its available traction capacity has been experimentally obtained, the greater is the using of the locomotive’s capacity, the greater will be its efficiency. On the basis of the performed analysis of energy efficiency indicators for various operating conditions, the proposals for their improvement are formulated. The algorithm ensuring the stabilization of the instantaneous value of efficiency at partial load to its nominal level at full load is presented. This algorithm is the implementation of Scalable Power Control Technology with respect to the problem of reducing electricity consumption for electric locomotive traction. The direct the experimental confirmation of energy consumption reduction for freight electric locomotive due to the application of our proposals (under the same operating conditions of the locomotive) is obtained.
    Źródło:
    Transport Problems; 2018, 13, 2; 103-110
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reliability level of reinforced concrete members designed according to belarussian national annexes to structural Eurocodes
    Autorzy:
    Tur, V. V.
    Markouski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/403193.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    reliability
    limit state
    partial factor
    load
    probabilistic model
    calibration
    niezawodność
    limit
    współczynnik częściowy
    obciążenie
    model probabilistyczny
    kalibrowanie
    Opis:
    The article presents the results of reliability analysis of reinforced concrete structures designed and built in accordance with design codes that are valid in Belarus. It is noted that such structures have different reliability levels as well as failure probabilities. Approaches to assessment actions on structures, which stated in European and Belarusian codes were analysed. It is shown that in most cases codes, which are used for designing of the existing structures do not meet the modern requirements for safety of structures. Additionally the results of reliability-based calibration of partial factors using in precast concrete members design are presented. The calibration resulted in the reduced value of partial factors for permanent loads on precast elements
    Źródło:
    Budownictwo i Inżynieria Środowiska; 2018, 9, 4; 173-179
    2081-3279
    Pojawia się w:
    Budownictwo i Inżynieria Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An examination of vehicles at the brake-chassis test bed in the range of the partial engine load.
    Autorzy:
    Marzec, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/196586.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    partial load of the engine
    external characteristics of the engine
    indicated pressure
    częściowe obciążenie silnika
    zewnętrzne właściwości silnika
    wskazane ciśnienie
    Opis:
    The performance of a ZI engine is presented in the paper, as well as a project involving a device for applying a partial load in the performed examinations of a brake-chassis test bed. The device was prepared for an Opel Astra and enabled the determination of exterior characteristics of the engine for different values of the engine load. The indicating pressure sensor and the angle marker on the crankshaft allowed for the recording of the indicating pressure obtained at different values of the load. The analysis of heat evolution in the process of burning, based on the registered results of the measurements at the brake-chassis test bed, has also been included in the presentation.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2017, 95; 121-131
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Partial Shading Detection in Solar System Using Single Short Pulse of Load
    Autorzy:
    Bartczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/221207.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    maximum power point
    partial shading
    load pulse
    test station
    I-V curve
    Opis:
    A single photovoltaic panel under uniform illumination has only one global maximum power point, but the same panel in irregularly illuminated conditions can have more maxima on its power-voltage curve. The irregularly illuminated conditions in most cases are results of partial shading. In the work a single short pulse of load is used to extract information about partial shading. This information can be useful and can help to make some improvements in existing MPPT algorithms. In the paper the intrinsic capacitance of a photovoltaic system is used to retrieve occurrence of partial shading.
    Źródło:
    Metrology and Measurement Systems; 2017, 24, 1; 193-199
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radial fan controlled with impeller movable blades – CFD investigations
    Autorzy:
    Jóźwik, K.
    Papierski, A.
    Sobczak, K.
    Obidowski, D.
    Kryłłowicz, W.
    Marciniak, E.
    Wróbel, G.
    Marciniak, A.
    Wróblewski, P.
    Kobierska, A.
    Frącczak, Ł.
    Podsędkowski, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/175168.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    radial fan control systems
    CFD methods
    radial fan performance
    partial load
    Opis:
    Modern classical power generation systems, based on power plants in Poland, where coal (hard bituminous coal or lignite) is the primary energy source, operate under variable loading conditions. Thus, all machines working in the technological system of the power generation unit are required to be adapted to variable loading, and, consequently, to operate beyond the design point of their performance characteristics. High efficiency of the process requires the efficiency of individual devices to be high, beyond the design point, as well. For both air and exhaust gases fans, an effective control system is needed to attain a high level of efficiency. As a result of cooperation between two institutes from the Faculty of Mechanical Engineering, Lodz University of Technology, and the Vibroson company, a new design of the radial fan with impeller movable blades, which allows for controlling the device operation within a wide range, has been developed. This new design and determination the performance characteristics for two geometrical variants of blades with computational fluid dynamics methods are presented. The obtained results have been compared to the results of the measurements of fan performance curves conducted on the test stand.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2016, 131; 17-40
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamical analysis of stiffened plates under patch loading
    Autorzy:
    Srivastava, A. K. L.
    Pandey, S. R.
    Kumar, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/265921.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    metoda elementów skończonych
    obciążenie krawędziowe
    częstotliwość drgań
    usztywniacz
    FEM
    partial edge loadings
    buckling load
    vibration frequency
    stiffener
    Opis:
    The vibration characteristics of stiffened plates with cutouts subjected to in-plane partial edge loadings at one end at the plate boundaries are studied using the finite element method. Buckling loads and vibration frequencies are determined for different cutout ratios and extent of partial edge loading at one end. In the structural modelling, the plate and the stiffeners are treated as separate elements where the compatibility between these two types of elements is maintained. The main elegance of the formulation lies in the treatment of the stiffeners. The stiffeners can be placed anywhere within the plate element, and need not be placed on the nodal lines. The vibration characteristics are discussed and the results are compared with those available in the literature. Numerical results are presented for a range of cutout to plate size from 0 to 0.8.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 2; 537-553
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The charge air energy losses of a partially loaded low speed engine
    Straty energetyczne powietrza doładowującego silników wolnoobrotowych obciążonych częściowo
    Autorzy:
    Tuński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/258162.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
    Tematy:
    silnik wolnoobrotowy
    obciążenie częściowe
    powietrze doładowujące
    strata energetyczna
    odzysk strat ciepła
    low speed engine
    partial load
    charge air
    energy loss
    waste heat recovery
    Opis:
    The structure of the low speed ship engines energy balance has changed during the last 30 years of engine development. The significant rise of the charge air waste heat is noticeable. The presented article describes changes of this kind of energy loss for partially loaded low speed engines. Calculations are based on the mathematical analysis of engine data and parameters recorded during ship operation under real conditions.
    Struktura bilansu energetycznego okrętowych wolnoobrotowych silników spalinowych uległa zmianie wraz z rozwojem w ciągu ostatnich 30 lat. Zauważalny jest znaczący wzrost strat energii cieplnej zawartej w powietrzu doładowującym. Prezentowany artykuł przedstawia zmiany tego typu rodzaju strat dla częściowo obciążonych silników wolnoobrotowych. Obliczenia zostały oparte na analizach danych silników oraz na zarejestrowanych parametrach podczas eksploatacji statku w warunkach rzeczywistych.
    Źródło:
    Problemy Eksploatacji; 2008, 4; 231-237
    1232-9312
    Pojawia się w:
    Problemy Eksploatacji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies