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wszystkich: 767
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Wyniki wyszukiwania dla: ENERGY EFFICIENCY
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Physical and sealing properties of BaO–Al2O3–SiO2–CaO–V2O5 glasses for solid oxide fuel cell applications
PublikacjaIn this study, the properties of BaO–Al2O3–SiO2 (SAB) glasses incorporated with CaO and V2O5 as the network modifier and additive, respectively, are evaluated. The electrical resistivities of the glasses decrease upon the addition of CaO but increase upon increasing their V2O5 content because the V5+ species lower the ionic mobility of the glasses. The addition of V2O5 improves the wettability of the glasses on the Crofer 22 APU...
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Recovery of silver metallization from damaged silicon cells
PublikacjaMetallization is one of the key process steps to fabricate solar cells with high performance in a cost-effective way. Majority of photovoltaic solar cell manufacturing uses thick film screen print metallization with Ag containing paste to produce solar cells. The average lifetime of PV modules can be expected to be more than 25 years. The disposal of PV systems will become a problem in view of the continually increasing production...
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Investigation of ecological parameters of a gas turbine combustion chamber with steam injection for the floating production, storage, and offloading vessel
PublikacjaThe article is dedicated to the investigation of the possibility of using the contact type gas turbine cycle with steam injection into the combustion chamber for the floating production, storage, and offloading vessel in order to increase the specific power and efficiency and reduce emissions of toxic components. A new approach is proposed, associated with the use of the two-stage injection of superheated steam into a gas turbine...
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The effect of imidazolium ionic liquid on the morphology of Pt nanoparticles deposited on the surface of SrTiO3 and photoactivity of Pt–SrTiO3 composite in the H2 generation reaction
PublikacjaPhotocatalytic water splitting has great potential in solar-hydrogen production as a low-cost and environmentally friendly method. Different unique techniques used to obtain photocatalysts with various modifications to improve H2 generation have been introduced. In the present work, SrTiO3 was successfully synthesized via the solvothermal method in the presence of ionic liquid (IL) - 1-butyl-3-methylimidazolium bromide ([BMIM][Br])...
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Cathodic activation of synthesized highly defective monoclinic hydroxyl‐functionalized ZrO2 nanoparticles for efficient electrochemical production of hydrogen in alkaline media
PublikacjaThe high electrochemical stability of Zirconia (ZrO2) at high potentials strongly suggested it as an alternative to carbon supports, which experience reduced efficiency due to some corrosion problems particularly during prolonged electrocatalysis activity. However, the use of ZrO2 was limited by its low electrical conductivity and surface area. In this work, we developed a methodology for synthesizing monoclinic ZrO2 NPs with increased...
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Justyna Martyniuk-Pęczek dr hab. inż. arch.
OsobyJustyna Martyniuk-Pęczek, dr hab. inż. arch., urbanista, architekt światła. Doktor habilitowany nauk technicznych w dyscyplinie architektura i urbanistyka, z dodatkową specjalnością architektonicznego projektowania światłem. Podstawowym obszarem jej zainteresowań naukowych jest urbanistyka, w obrębie której skoncentrowała się na trzech nurtach badawczych, a mianowicie: Problemy kształtowania współczesnych przestrzeni publicznych,...
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Mirosław Włas dr inż.
OsobyWykształcenie : 1987-1991 – Liceum Ogólnokształcące im. Jana Bażyńskiego w Ostródzie – profil matematyczno-fizyczny 1991-1996 Politechnika Gdańska – studia na Wydziale Elektrycznym 1997-2002 Politechnika Gdańska – studia doktoranckie na Wydziale Elektrotechniki i Automatyki 1998- 1999 Politechnika Gdańska – kurs ekonomii na Wydziale Zarządzania i Ekonomii PG 1997-2000 – kurs j. angielskiego - Zespół Lektorów BEST – Gdańsk 2003...
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The structure of electricity production in Poland (data as at the end of 2010)
Dane BadawczeThe energy market in Poland is characterized primarily by the use of only one raw material for the production of electricity. In 2010, as much as 91.4% of electricity was produced on the basis of hard coal or lignite. Therefore, the remaining sources used for the production of electricity participated in the production of electricity to a small extent....
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Marek Adamowicz dr hab. inż.
OsobyStopień naukowy doktora uzyskał w 2008 r. na Wydziale Elektrotechniki i Automatyki Politechniki Gdańskiej. W latach 2005 – 2011 pracował na Akademii Morskiej w Gdyni. W 2010 r. jako laureat programu NCBR LIDER wybrał Wydział Elektrotechniki i Automatyki Politechniki Gdańskiej jako jednostkę realizującą swój projekt z zakresu szerokopasmowych przyrządów półprzewodnikowych i ich zastosowań w elektrowniach wiatrowych. Od 2011 roku...
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Energy Systems Stations, W, ET, sem.7, zimowy 22/23 (PG_00042106)
Kursy OnlineInternal combustion engines - principle of operation and classification. Heat balance of the engine. Uniform and combined propulsion systems.The main comonents of the propulsion system. Power plant efficiency and waste heat utilization. Cooling water system, lubricating oil system, fuel oil systeml, gaseos fuel system (LNG), compressed air system, exhaust gas system. Fittings and accessories of pipeline systems in the power plant....
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Andrzej Augusiak dr inż.
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The effect of agro-waste co-digestion and sludge disposal on carbon footprint in municipal wastewater treatment plants
PublikacjaThe study presents analysis of the carbon footprint (CF) in 6 wastewater treatment plants in northern Poland with a special focus on the effect of co digestion of sewage sludge and food waste. Although co-digestion increases the on-site energy production, but it has a negative effect on the total CF. To overcome the negative effect, several sludge disposal scenarios were analysed and their effect on the CF reduction was determined....
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Experimental investigation of heat transfer enhancement in straight and U-bend double-pipe heat exchanger with wire insert
PublikacjaIn this paper, the possibility of heat transfer enhancement in the U-bend exchanger was presented. Experimental research has been carried out for four individual heat exchanger constructions i.e. plain tube in tube, turbulized tube in tube, plain U-bend and U-bend with turbulator. Also, heat transfer experiments for various boundary conditions were performed to obtain reference values. In case of U-bend exchanger with and without...
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Optimization of hybrid parallel application execution in heterogeneous high performance computing systems considering execution time and power consumption
PublikacjaMany important computational problems require utilization of high performance computing (HPC) systems that consist of multi-level structures combining higher and higher numbers of devices with various characteristics. Utilizing full power of such systems requires programming parallel applications that are hybrid in two meanings: they can utilize parallelism on multiple levels at the same time and combine together programming interfaces...
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The performance of H2O, R134a, SES36, ethanol, and HFE7100 two-phase closed thermosyphons for varying operating parameters and geometry
PublikacjaIn this study, the influences of different parameters at performance two-phase closed thermosiphon (TPCT) was presented. It has been confirmed that the working fluid, as well as operating parameters and fill ratio, are very important factors in the performance of TPCT. The article shows characteristics of gravitational tube geometr ies, as well as the technical characteristic of the most important system components, i.e., the evaporator/condenser....
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Performance Evaluation of Selected Parallel Object Detection and Tracking Algorithms on an Embedded GPU Platform
PublikacjaPerformance evaluation of selected complex video processing algorithms, implemented on a parallel, embedded GPU platform Tegra X1, is presented. Three algorithms were chosen for evaluation: a GMM-based object detection algorithm, a particle filter tracking algorithm and an optical flow based algorithm devoted to people counting in a crowd flow. The choice of these algorithms was based on their computational complexity and parallel...
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Carnivorous plants used for green synthesis of silver nanoparticles with broad-spectrum antimicrobial activity
PublikacjaIn this study, we exploit the anti-oxidative potential of four carnivorous plants to produce uniform and biologically active silver nanoparticles. The use of polyvinylpyrrolidone promoted syn-thesis of quasi-spherical nanoparticles characterized by stability and high uniformity. Their activity was tested against three human pathogens and three species of plant pathogenic bacteria. The study demonstrates the influence of synthesis...
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Thermal and economic investigation of straight and U-bend double tube heat exchanger with coiled wire turbulator
PublikacjaExperimental research has been carried out for four individual heat exchanger constructions, i.e., plain double tube, turbulized double tube, plain U-bend and U-bend with turbulator. Tests were made for the water-water system. The study covered a wide measuring range, i.e., Re = 800–9000 – on the shell side, for a constant cold water temperature of 9 ◦C and hot water of 50 ◦C. The heat exchangers were made from copper tubes with...
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Modeling of Electrified Transportation Systems Featuring Multiple Vehicles and Complex Power Supply Layout
PublikacjaThe paper proposes a novel approach to modeling electrified transportation systems. The proposed solution reflects the mechanical dynamics of vehicles as well as the distribution and losses of electric supply. Moreover, energy conversion losses between the mechanical and electrical subsystems and their bilateral influences are included. Such a complete model makes it possible to replicate, e.g., the impact of voltage drops on vehicle...
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Improvement of the Chimney Effect in Stack Ventilation
PublikacjaThe article is focused on the airflow in a ventilation system in a building. The work examines the methods which enhance the chimney effect. In this paper, three cases with different chimneys were analyzed for the full-scale experiment. These cases were characterized by different geometrical and material parameters, leading to differences in the intensity of the ventilation airflow. The common denominator of the cases was the room...