Search results for: INNOVATIVE WIND TURBINE - Bridge of Knowledge

Search

Search results for: INNOVATIVE WIND TURBINE

Search results for: INNOVATIVE WIND TURBINE

  • Stability of a truss under upward wind loading

    Publication

    - Year 2016

    The present paper is devoted to the numerical investigations of stability of a truss under upward wind load. The truss is braced at its the upper cord. A structural variant including lateral braces, or lateral and torsional braces is considered. The research presents the problems of linear buckling and non-linear static analysis of the truss shell and beam model with geometric and material non-linearity are presented. The initial...

  • The thermal effort during marine steam turbine flooding with water

    Publication

    - AIP Conference Proceedings - Year 2019

    The work discussed an extreme case of cooling a steam turbine. The ship's steam turbine was used as an example. In marine transport units with low-speed engines dominate, however, there are also units with steam turbines. An example of analysed marine steam turbine is shown in Fig. 1. When considering the issue of cooling steam turbines, it is necessary to estimate the extreme conditions that may occur during operation of the turbine....

    Full text available to download

  • Innovative Cold-formed GEB Section under Bending

    Publication

    This paper is concerned with the numerical bending capacity study of the innovative cold-formed GEB sections. Both linear buckling analysis and non-linear static analysis incorporating geometric and material nonlinearity were carried out employing a shell structural model. The magnitudes of buckling load and limit load with respect to GEB section depth and thickness were obtained. The opened cold-formed section was tested assuming...

    Full text to download in external service

  • Simplified, multiregional fuzzy model of a nuclear power plant steam turbine

    Publication

    Power systems, including steam turbines and synchronous generators, are complex nonlinear systems with parameters varying over time. The paper presents the developed simplified, multiregional fuzzy model of the steam turbine of a nuclear power plant turbine generator set and compares the results with a full nonlinear model and commonly used linear input-output model of a steam turbine. The proposed model consist of series of linear...

    Full text to download in external service

  • HDAC Inhibitors: Innovative Strategies for Their Design and Applications

    Publication
    • M. Daśko
    • B. De Pascual-Teresa
    • I. Ortín
    • A. Ramos

    - MOLECULES - Year 2022

    Histone deacetylases (HDACs) are a large family of epigenetic metalloenzymes that are involved in gene transcription and regulation, cell proliferation, differentiation, migration, and death, as well as angiogenesis. Particularly, disorders of the HDACs expression are linked to the development of many types of cancer and neurodegenerative diseases, making them interesting molecular targets for the design of new efficient drugs...

    Full text available to download

  • Design analysis of Tesla micro-turbine operating on a low-boiling medium

    Publication

    - Polish Maritime Research - Year 2009

    This paper presents results of the design analysis of a Tesla bladeless turbine intended for a co-generating micro-power plantof heat capacity 20 kW, which operates in an organic Rankine cycle on a low-boiling medium. Numerical calculations of flowin several Tesla turbine models were performed for a range of design parameters. Results of investigations exhibit interestingfeatures in the distribution of flow parameters within the...

    Full text available to download

  • On the modelling of aerodynamic force coefficients for over-shroud seals of turbine stages

    This paper presents experimental investigations which made it possible to determine dynamic coefficients of labyrinth over-shroud seal of a model air turbine. The coefficients associate pressure forces with turbine rotor displacement, velocity and acceleration respective to turbine casing (linear model) and play important role in analyzing turbine-set dynamics. The obtained results indicated that involving serious errors can be...

    Full text available to download

  • The Method of reduction of aerodynamic forces generated in turbine blade seals

    Publication

    The distibution of pressure in the seal gaps does not only affect the so called '' leakage losses'' and the turbine stage overall efficiency but also plays an important role in the generation of aerodynamic forces which may cause self-excited rotor vibrations. The paper describes a chamber seal applied for the reduction of the aerodynamic forces created in shroud seals. This kind of turbine seal was patented and tested.

  • Explanation of Reduction of Pressure Forces in Turbine Chamber Seals

    The paper describes a chamber seal reducing the aerodynamic forces created in shroud seals. Asymmetrical pressure distribution (due to rotor-stator eccentricity) in the blade tip clearance leads to the creation of pressure forces acting on the blade shroud. By increasing the volume above the shroud, the pressure distribution becomes more uniform on the whole shroud circumference and the effect of rotor eccentricity is reduced....

    Full text to download in external service

  • Explanation of Reduction of Pressure Forces in Turbine Chamber Seals

    Publication

    The paper describes a chamber seal reducing the aerodynamic forces created in shroud seals. Asymmetrical pressure distribution (due to rotor-stator eccentricity) in the blade tip clearance leads to the creation of pressure forces acting on the blade shroud. By increasing the volume above the shroud, the pressure distribution becomes more uniform on the whole shroud circumference and the effect of rotor eccentricity is reduced....

  • Estimation of wind pressure acting on the new palm house in Gdansk

    This paper deals with the problem of numerical simulations of wind loads acting on a Palm House with complex geometry. Flow simulations with aid of computational fluid dynamics procedures have been performed to check if the pressure distributions for the structure are greater than those calculated using the standard design codes with assumption that the Palm House horizontal cross sections are described by smooth cylinders.

    Full text available to download

  • The use of Response Surface Methodology for reliability estimation of aluminum silo subjected to wind load

    Publication

    - Year 2014

    An axisymmetric aluminum silo model with a single, standardized geometric imperfection of its lateral surface is considered. The silo is wind – loaded only. The paper is focused on the critical, or limit value of wind pressure, both producing a loss of stability of the silo. This value is affected by vertical coordinate (position) of the imperfection and the angular relation between the imperfection and the wind direction. Reliability...

    Full text to download in external service

  • OPTIMIZATION OF THE LAST STAGE OF GAS-STEAM TURBINE USING A HYBRID METHOD

    Publication

    - Year 2021

    This paper relates to the CFD calculation of a new turbine type which is in the phase of theoretical analysis, because the working fluid is a mixture of steam and gas generated in wet combustion chamber. At first, this article concentrates on a possibility of streamlining the flow efficiency of a last stage of axial turbine working on gas-steam mixture using a hybrid of the particle swarm optimization algorithm with the Nelder-Mead...

    Full text to download in external service

  • Reduction of Derivative pipeline effort in water turbine

    Publication

    - Studia Geotechnica et Mechanica - Year 2013

    The paper presents an approach to evaluate and reduce the effort of the derivative pipeline in a water turbine of a hydrostatic power station in its vulnerable spots. Potential places of the biggest effort of the structure, as well as the coefficient of displacement and safety factor related to them were identified using FEM numerical method. Pipeline reinforcement was designed and made based on FEM analysis. Original technology...

    Full text available to download

  • An Intelligent Approach to Short-Term Wind Power Prediction Using Deep Neural Networks

    Publication

    - Journal of Artificial Intelligence and Soft Computing Research - Year 2023

    In this paper, an intelligent approach to the Short-Term Wind Power Prediction (STWPP) problem is considered, with the use of various types of Deep Neural Networks (DNNs). The impact of the prediction time horizon length on accuracy, and the influence of temperature on prediction effectiveness have been analyzed. Three types of DNNs have been implemented and tested, including: CNN (Convolutional Neural Networks), GRU (Gated Recurrent...

    Full text available to download

  • Gas Turbine Cycle with External Combustion Chamber for Prosumer and Distributed Energy Systems

    Publication

    The use of various biofuels, usually of relatively small Lower Heating Value (LHV), affects the gas turbine efficiency. The present paper shows that applying the proposed air by-pass system of the combustor at the turbine exit causes tan increase of efficiency of the turbine cycle increased by a few points. This solution appears very promising also in combined gas/steam turbine power plants. The comparison of a turbine set operating...

    Full text available to download

  • Thermal failure of a second rotor stage in heavy duty gas turbine

    Publication

    - ENGINEERING FAILURE ANALYSIS - Year 2020

    The impulse mode of operation and the supply of various types of fuels causes frequent failures even in the heavy duty gas turbines. The paper presents the ravages of second rotor stage failure in a gas turbine. The excessive thermal elongation rise caused by fuel change was indicated as the main cause. We applied nonlinear numerical analysis, preceded by thermodynamic calculations of the turbine and visual inspection of the effects...

    Full text available to download

  • The Application of Fluidic Sealing in Shrouded Gas Turbine Blades

    Publication
    • F. Wasilczuk
    • P. Flaszyński
    • P. Doerffer
    • K. Marugi
    • T. Borzęcki

    - JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME - Year 2024

    This paper presents a study conducted on a new gas turbine designed to limit leakage in the labyrinth seal. The slots in the fin are used to generate a bypass flow, which obstructs the flow in the gap above the fin. The method was tested numerically and experimentally beforehand using a simplified model without rotation or blade passages. In this paper, the validation of the method using a model of a turbine stage is shown. Reynolds-averaged...

    Full text to download in external service

  • A COMPARISON OF THE WIND SPECTRUM ACCORDING TO DIFFERENT METHODS - AN ORIGINAL PROJECT OF A BUILDING ON A CLIFF IN GDYNIA

    The article presents numerical simulations of the dynamic wind loads on the structure of a building designed on a cliff in Gdynia. The results obtained from the two methods: Davenport’s and Karman’s are compared. The results allowed a comparison of the two methods, and they provided an answer to the question how a construction, designed in such an unusual condition of a cliff behaves under the influence of the gusting wind. The...

    Full text available to download

  • The analysis of turbine propulsion systems in nuclear submarines

    Publication

    The article systematises submarines, which are presently in service, according to their propulsion types (both conventional and nuclear), power output, and submersion depth. Contemporary types of propulsion systems installed and used in submarines are discussed. Calculations were performed for the PWR (Pressurized Water Reactor) type nuclear propulsion system and the supercritical turbine propulsion system (supercritical reactor...

    Full text to download in external service

  • On design and analysis of flow characteristics of the last stage of gas-steam turbine

    Publication

    - Year 2020

    Research regarding blade design and analysis of flow have been conducted for over a century. Meanwhile new concepts and design approaches were created and improved. Advancements in information technologies allowed to introduce computational fluid dynamics (CFD) and computational flow mechanics (CFM). Currently a combination of mentioned methods is used for design of turbine blades. These methods enabled us to improve flow efficiency...

    Full text available to download

  • 1D Model Callibration on the Basis on 3D calculations for Tesla Turbine

    Publication

    The paper presents the system of equations for axisymmetriclaminar flow, after averaging, through the width of interdisk slit ofTesla turbine. Coefficients were introduced, as a result ofaveraging, that improve the efficiency of 1D model. The minimalnumber of such coefficients was determined. The 1D modelmakes it possible to attain analytical solutions to an accuracylimited by these coefficients. Calibration of 1D model depends...

    Full text available to download

  • Dynamic state assessment of the water turbine with the power of 600 kW

    Publication

    - Diagnostyka - Year 2013

    The article discusses the results of experimental studies to assess the dynamic state of the turbine set with the Kaplan turbine. The dynamic assessment was made on the basis of appropriate standards, based on the measurement results of selected parameters of vibration, which have been measured for several states of the machine load. In addition, we attempted to identify the causes of the increased vibration levels based on the...

    Full text available to download

  • A Wind Energy Conversion System Based on a Generator with Modulated Magnetic Flux

    Publication

    - ENERGIES - Year 2020

    In this work, the concept of an energy conversion system for wind turbines based on the modified permanent magnet synchronous generator (PMSG) is presented. In the generator, a pair of three-phase windings is used, one of which is connected in a “star” and the second in a “delta” configuration. At the outputs of both windings, two six-pulse uncontrolled (diode) rectifiers are included. These rectifiers are mutually coupled by a...

    Full text available to download

  • Innovative cold-formed GEB section under compression

    Cold-formed steel sections extensively affect the modern steel construction industry. Not only are they used as secondary elements like purlins or sheeting, but also they can serve as primary load-bearing members in fabricated steel panels and trusses. A new cross-section called shortly a GEB may serve as that member. However, its existence of the metal building structures industry depends on the exact, optimal dimensional parameters...

  • Experimental Validation of Numerical Model within a Flow Configuration of the Model Kaplan Turbine

    This paper investigates validation of flow within a model Kaplan turbine. This includes comparison of various turbulence models and their influence on torque and power generated by the turbine. Numerical results were compared with experimental data.

    Full text available to download

  • OPERATION OF TWO-SHAFT GAS TURBINE IN THE RANGE OF OPEN ANTI-SURGE VALVE

    Publication

    This paper presents experimental tests of full-scale two-shaft gas turbine in the range of open anti-surge valve (ASV). The tests were carried out in a laboratory gas- turbine test stand belonging to Department of Automation and Power Engineering , Faculty of Ocean Engineering and Ship Technology , Gdańsk University of Technology. The tests covered the start-up and low load operation of the turbine set in the range of open...

    Full text available to download

  • Variable-fidelity shape optimization of dual-rotor wind turbines

    Publication

    - ENGINEERING COMPUTATIONS - Year 2018

    Purpose Dual-rotor wind turbines (DRWTs) are a novel type of wind turbines that can capture more power than their single-rotor counterparts. Because their surrounding flow fields are complex, evaluating a DRWT design requires accurate predictive simulations, which incur high computational costs. Currently, there does not exist a design optimization framework for DRWTs. Since the design optimization of DRWTs requires numerous model...

    Full text to download in external service

  • Operation evaluation method for marine turbine combustion engines in terms of energetics

    Publication

    An evaluation proposal (quantitative determination) of an y combustion turbine engine operation has been presented , wherein the impact energy occurs at a given time due to Energy conversion. The fact has been taken into account that in this type of internal combustion engines the energy conversion occurs first in the combustion chambers and in the spaces between the blade of the turbine engine. It was assumed that in the combustion...

    Full text available to download

  • DEFORMATIONS OF INNOVATIVE COLD-FORMED GEB SECTIONS

    Publication

    Permanent urban growth of the world of today world implies demanding challenges for the steel construction industry. Nowadays, one of the most important issues is the cost optimization of steel structures. Since the weight of building materials is a major component of the total cost, engineers and designers try to reduce structural weight, without compromising durability and sustainability of a steel structure. Therefore, light...

  • Effective method for determining environmental loads on supporting structures for offshore wind turbines

    Publication

    - Year 2014

    This paper presents a description of an effective method for determining loads due to waves, current and wind acting on the supporting structures of the offshore wind turbines. This method is dedicated to the structures consisting of the cylindrical or conical elements as well as (truncates) pyramids of polygon with a large number of sides (8 or more). The presented computational method is based on the Morison equation, which was...

  • Innovative system for energy collection and management integrated within a photovoltaic module

    Publication
    • W. Grzesiak
    • P. Maćków
    • T. Maj
    • A. Polak
    • E. Klugmann-Radziemska
    • S. Zawora
    • K. Drabczyk
    • S. Gułkowski
    • P. Grzesiak

    - SOLAR ENERGY - Year 2016

    The dynamic development of battery technology and design based on the flow of lithium ions, mainly driven by the needs of the automotive industry, leads to the conclusion that these batteries are becoming a more viable alternative to traditional lead-acid batteries. Their use is driven by the ability to quickly charge and discharge, a higher durability, maintenance-free operation, much smaller dimensions and lighter weight. The...

    Full text available to download

  • Evolution of the HVDC Link Connecting Offshore Wind Farms to Onshore Power Systems

    Publication

    This paper presents an overview of the DC link development and evolution dedicated to HVDC structure for connecting offshore wind power plants to onshore power systems. The growing demand for the green energy has forced investors in power industry to look for resources further out at sea. Hence, the development of power electronics and industrial engineering has enabled offshore wind farms to be situated further from the shore...

    Full text available to download

  • AeroSense Measurements: Wind Tunnel Ecole Centrale Lyon

    Open Research Data

    Data from wind tunnel tests of Aerosesne measurement system installed on NACA 63418 aerfoil in the anechoic wind tunnel at the Ecole Centrale Lyon. 

  • Analysis of electricity generation variability in 2019 with special consideration of electrical energy generation from wind sources.

    Publication

    - Year 2020

    This article presents issues related to the broadly understood development of wind energy. The state of the art of wind energy in the world has been discussed. This paper also shows issues related to factors affecting the development of renewable energy sources and their impact on the natural environment on the basis of available research. The focus is, however, on the critical analysis of phenomena in the data of the Transmission...

    Full text available to download

  • Możliwości sterowania mocą bierną elektrowni wiatrowej : Reactive power control methods in wind parks

    Publication

    Referat poświęcony jest zagadnieniu sterowania mocą bierną w elektrowniach wiatrowych. W pierwszej części referatu opisano tło problemu sterowania mocą bierną w parkach wiatrowych, podano powody, dla których moc bierna powinna podlegać regulacji oraz zarysowano metody, które mogą być do niej użyte. W celu sprawdzenia proponowanych metod kompensacji, zbudowano model matematyczny elektrowni wiatrowej, którego poszczególne elementy...

  • Application of Rapid Prototyping technology in the manufacturing of turbine blade with small diameter holes

    Publication

    The article presents the possibilities of using Rapid Prototyping (RP) technology in the manufacturing of turbine blades with small diameter holes. The object under investigation was gas turbine blade with small diameter cooling holes and holes for generating longitudinal vortices. A turbine blade model was produced by means of Direct Metal Laser Sintering (DMLS) technology and subsequently validated in terms of detection and accuracy...

    Full text available to download

  • On Accuracy Modeling of Gas Turbine Cycles by the In-house COM-GAS Code

    Publication

    - Year 2016

    In this paper, a comparison of accuracy modeling of gas turbine cycles between the basic (classical) model and the in-house COM-GAS code has been presented. The basic model uses a semi-perfect gas and well known projecting assumption. On the other hand, the computational flow mechanics (CFM) basis on a real gas by using thermodynamic tables. The thermodynamic analysis of thermal cycles, simply gas cycle GT8C and gas turbine cycle...

  • Innovative Gathering and Energy Management System Integrated within PV Module

    Publication

    - Year 2015

    The dynamic development of battery technology and design based on the flow of lithium ions, mainly driven by the needs of the automotive industry leads to the Conclusion That they are becoming a more viable alternative to traditional lead-acid batteries. Their use is driven by the ability it quickly charge and discharge times higher durability, maintenance-free operation and much smaller dimensions as well as weight. The emergence...

    Full text to download in external service

  • Analyzing Wind Energy Potential Using Efficient Global Optimization: A Case Study for the City Gdańsk in Poland

    Publication

    - ENERGIES - Year 2022

    Wind energy (WE), which is one of the renewable energy (RE) sources for generating electricity, has been making a significant contribution to obtaining clean and green energy in recent years. Fitting an appropriate statistical distribution to the wind speed (WS) data is crucial in analyzing and estimating WE potential. Once the best suitable statistical distribution for WS data is determined, WE potential and potential yield could...

    Full text available to download

  • Rotor Blade Geometry Optimisation in Kaplan Turbine

    Publication

    The paper presents the description of method and results of rotor blade shape optimisation. The rotor blading constitutes a part ofturbine flow path. Optimisation consists in selection of the shape that minimises ratio of polytrophic loss. Shape of the blade isdefined by the mean camber line and thickness of the airfoil. Thickness is distributed around the camber line based on the ratio ofdistribution. Global optimisation was done...

    Full text available to download

  • Inlet air fogging of marine gas turbine in power output loss compensation

    The use of inlet air fogging installation to boost the power for gas turbine engines is widely applied in the power generation sector. The application of fogging to mechanical drive is rarely considered in the literature [1]. This paper will cover some considerations relating to its application to gas turbines in ship drive. There is an important evaporative cooling potential throughout the world when the dynamic data is evaluated,...

    Full text available to download

  • Revalorisation of the Szewalski’s concept of the law of varying the last-stage blade retraction in a gas-steam turbine

    Publication

    - E3S Web of Conferences - Year 2021

    The article presents the implementations of the free vortex law to the blade of the last stage of a gas-steam turbine. First, a thermodynamic analysis was carried out, determining the parameters at the inlet, then the number of stages of the high and low-pressure part of the turbine was constructed, together with the kinematics and velocity vectors for subsequent stages of the axial turbine. The last step of article was to take...

    Full text available to download

  • Innovative Regionen - kreative Metropolen

    Publication

    - Year 2007

    Rola metropolii ulega zmianie.Jako lokomotywy innowacyjnych regionów koncentrują cztery główne kapitały:ludzki,społeczny,gospodarczy i wiedzy.Metropolie wiedzy opisują swój rozwój na modelu TRIPLE HELUX,który generuje najwyższą wartość dodaną w przestrzeni wiedzy.

  • Innovative Regionen - kreative Metropolen

    Publication

    - Year 2007

    Innowacyjne regiony sa ''lokomotywami'' rozwoju. Koncentruja wiedze, nauke, innowacje. Szczegolna koncentracja form innowacyjnych wystepuje w przestrzeni metropolii w powiazaniach kapitalu wiedzy, spolecznego, ludzkiego, instytucjonalnego. Definicja potrojnej helisy (Triple Helix) dotyczy powiazan wiedzy i badan, gospodarki i zarzadzania regionem (governance). Kreatywne metropolie wyznaczaja 3xT: talent, technologie, tolerancja.

  • An innovative light child seat

    Publication

    Przedstawiono rozwój konstrukcji i badania symulacyjne fotelika samochodowego do przewozu dziecka.

  • INNOVATIVE RUN FLAT SYSTEMS

    Publication

    - Journal of KONES - Year 2015

    One of the most essential threats to the mobility of wheeled vehicles is their relatively high sensitivity to tire damage. Tires can be damaged as a result at vehicle-targeting fire, after running on a mine or an improvised charge. The purpose of the article is to analyze the current technical solutions in wheeled vehicle tires, allowing for the unobstructed use of the vehicle despite the damage of one or several tires (RUN FLAT...

    Full text available to download

  • RANS-based design optimization of dual-rotor wind turbines

    Publication

    - ENGINEERING COMPUTATIONS - Year 2018

    Purpose An improvement in the energy efficiency of wind turbines can be achieved using dual rotors. Because of complex flow physics, the design of dual-rotor wind turbines (DRWTs) requires repetitive evaluations of computationally expensive partial differential equation (PDE) simulation models. Approaches for solving design optimization of DRWTs constrained by PDE simulations are investigated. The purpose of this study is to determine...

    Full text to download in external service

  • Properties of an innovative multi-functional finish for the improvement of indoor air quality

    Publication
    • C. Giosuè
    • M. Pierpaoli
    • C. di Perna
    • B. Citterio
    • G. Mangiaterra
    • M. L. Ruello
    • F. Tittarelli

    - BUILDING AND ENVIRONMENT - Year 2023

    Due to lifestyle changes, people spend most of their time indoors at present; thus, Indoor Air Quality (IAQ) is a matter of utmost importance. Multi-functional and innovative finishes can help to passively improve the IAQ, benefitting the health and comfort of occupants. For this study, reference and pre-mixed commercial mortars are compared to a new multi-functional hydraulic lime mortar for indoor finishes, in which conventional...

    Full text to download in external service

  • Long-Term Impact of Wind Erosion on the Particle Size Distribution of Soils in the Eastern Part of the European Union

    Publication
    • L. Lackóová
    • J. Pokrývková
    • J. Kozlovsky Dufková
    • A. Policht-Latawiec
    • K. Michałowska
    • J. Dąbrowska

    - ENTROPY - Year 2021

    Wind erosion is the leading cause of soil degradation and air pollution in many regionsof the world. As wind erosion is controlled by climatic factors, research on this phenomenon isurgently needed in soil and land management in order to better adapt to climate change. In thispaper, the impact of wind erosion on the soil surface in relation to particle size distribution wasinvestigated. Changes in percentage of sand, silt and...

    Full text available to download