Wyniki wyszukiwania dla: STIG CYCLE - MOST Wiedzy

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Wyniki wyszukiwania dla: STIG CYCLE

Wyniki wyszukiwania dla: STIG CYCLE

  • CELL CYCLE

    Czasopisma

    ISSN: 1538-4101 , eISSN: 1551-4005

  • Water Cycle

    Czasopisma

    eISSN: 2666-4453

  • Organic Rankine cycle as bottoming cycle to a combined Brayton and Clausius - Rankine cycle

    Publikacja

    A preliminary evaluation has been made of a possibility of bottoming of a conventional Brayton cycle cooperating with the CHP power plant with the organic Rankine cycle installation. Such solution contributes to the possibility of annual operation of that power plant, except of operation only in periods when there is a demand for the heat. Additional benefit would be the fact that an optimized backpressure steam cycle has the advantage...

  • Analysis of operations of combined STIG installation

    Publikacja
    • A. Chrzczonowski
    • K. Jesionek
    • J. Badur
    • P. Ziółkowski

    - Rok 2013

    Steam injection in gas turbines is interesting technology with good energetic and ecological properties of gas turbines. In these applications the heat of exhaust gases is used to produce steam, which is injected in the combustion chamber of a gas turbine. The steam injection increase the power and efficiency of the installation. there are some possibilities to increases the properties of STIG turbines, for example by meas of additional...

  • Revenue-cycle strategist

    Czasopisma

    ISSN: 1549-0858

  • ENHANCED MASTER CYCLE - SIGNIFICANT IMPROVEMENT OF STEAM RANKINE CYCLE

    Publikacja

    The present paper focuses on an enhancement of the Master Cycle. In the first part, the paper presents a classical Master Cycle which is a modification of the double reheat Rankine cycle. This modification allows to slightly increase efficiency, resolves problems caused by superheated steam on bleeds and decreases mass flow rate of steam directed to reheat. These improvements include the implementation of a tuning turbine from...

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  • The Life Cycle Assessment and Life Cycle Cost in public works contracts

    Publikacja

    An important goal, implemented by EU countries under the Europe 2020 strategy, is sustainable development, which includes supporting economy that effectively uses natural and environmentally friendly resources. Solutions in this area are also promoted in tender proceedings in the area of public procurement. The LCA (Life Cycle Assessment) and LCC (Life Cycle Cost) analysis are indicated as the basis for decision-making by awarding...

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  • Organic Rankine as bottoming cycle to a combined Brayton and Clausius-Rankine cycle

    This paper presents an enhanced approach, as it will be considered here that the ORC installation could be extra-heated with the bleed steam, a concept presented by the authors. In such way the efficiency of the bottoming cycle can be increased and an amount of electricity generated increases. A thermodynamic analysis and a comparative study of the cycle efficiency for a simplified steam cycle cooperating with ORC cycle will be...

  • Application of Organic Rankine Cycle as bottoming cycle to conventional heat and power plant

    Publikacja

    - Rok 2012

    W pracy rozważono możliwość zastosowania układu ORC w skojarzeniu z ciepłownią lub elektrociepłownią celem podniesienia stopnia wykorzystania jednostki CHP podczas eksploatacji w skali roku. Połączenie układu ORC z zawodową jednostką CHP może wpłynąć na wzrost rocznej produkcji energii elektrycznej i jednoczsne zmniejszenie fluktuacji podczas pracy bloku energetycznego. Z jednej strony następuje konwersja energii cieplnej na elektryczną...

  • Journal of Business Cycle Research

    Czasopisma

    ISSN: 2509-7962 , eISSN: 2509-7970

  • On the Hat Problem on the Cycle C7

    The topic is the hat problem in which each of n players is randomly fitted with a blue or red hat. Then everybody can try to guess simultaneously his own hat color by looking at the hat colors of the other players. The team wins if at least one player guesses his hat color correctly, and no one guesses his hat color wrong; otherwise the team loses. The aim is to maximize the probability of a win. In this version every player can...

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  • Hat problem on the cycle C4

    The topic of our paper is the hat problem. In that problem, each of n people is randomly tted with a blue or red hat. Then everybody can try to guess simultanously his own hat color looking at the hat colors of the other people. The team wins if at least one person guesses his hat color correctly and no one guesses his hat color wrong, otherwise the team loses. The aim is to maximize the probability of win. In this version every...

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  • Life Cycle Assessment of Analytical Protocols

    Publikacja

    Life cycle assessment is a relatively new tool for environmental management, which is becoming more and more important owing to the globalization of the world economy, where there is a need to develop standards in protecting the environment

  • Life Cycle Assessment of Analytical Protocols

    Publikacja
    • H. Janik
    • J. Kucinska-Lipka

    - Rok 2009

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  • Revalorization of the Szewalski binary vapour cycle

    Publikacja

    The aim of the paper is to revalorizate of the Szewalski binary vapour cycle by analysing thermodynamical and operational parameters of this cycle. This was carried by accessible numerical CFM (Computational Flow Mechanics) codes type, by step-by-step modeling of separates apparatus. The binary vapour cycle is providing steam as the working fluid in the high temperature part of the cycle, while another fluid - a low boiling point...

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  • Digital document life cycle development

    Publikacja

    Przedstawiono model DDLC wytwarzania interaktywnych dokumentów cyfrowych z ich pierwowzorów papierowych. Model DDLC opracowany w ramach 5 PR UE IST-2002-33441 MEMORIAL wyróżnia 6 faz i odpowiednie grupy funkcjonalności narzędzi do ich realizacji. Cykl wytwarzanie realizuje politykę całkowitej kontroli jakości, wykorzystującej specjalnie opracowaną metodę Visual GQM.

  • Life cycle theories of savings and consumption

    Publikacja

    Life cycle theories of savings and consumption are the economics theories explaining the changes in saving and consumption in the subsequent phases of the human life cycle. There are two main approaches: (1) indicating the dependence of the level of savings and consumption on the average level of income over a long period of human life (life cycle hypothesis; LCH) or (2) on psychological factors, in particular self-control and...

  • INTERNATIONAL JOURNAL OF LIFE CYCLE ASSESSMENT

    Czasopisma

    ISSN: 0948-3349 , eISSN: 1614-7502

  • GLOBAL BIOGEOCHEMICAL CYCLES

    Czasopisma

    ISSN: 0886-6236 , eISSN: 1944-9224

  • Foresight and STI Governance

    Czasopisma

    ISSN: 1995-459X , eISSN: 2500-2597

  • Modeling and simulation of tool cycle in manufacturing cell

    Publikacja

    The paper addresses issues concerning modeling and analysis of tool flow within a three-machine manufacturing cell used for small batch manufacturing of a definite spectrum of prismatic parts. The approach utilizes a method for job and tool allocation to work centers with limited number of machines and capacity of tool resources, based on the analysis of formalized relations: job - tool sets required. Selected tool flow control...

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  • Analysis and Evaluation of the Working Cycle of the Diesel Engine

    Publikacja

    The paper presents a proposal to apply a quantitative evaluation of the diesel engine with regard to the phenomena occurring during of a working cycle. The proposed procedure when analyzing test results from diesel engine is an attempt to transfer an engine activity evaluation methods in the operational time scale (exploit time), eg. in hours, to the micro-scale (dynamic time) relating only to the execution time of one (several)...

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  • Looking for a minimum exergy destruction in hierarchical cycle

    Publikacja

    - Rok 2015

    The paper presents results of energy analysis, complemented with an exergy balance, of hierarchical thermodynamic cycle. Proposed cycle is a binary vapour cycle based on a model of real supercritical steam power plant. Energy analysis is used to preliminary optimization of the cycle and the exergy losses analysis is proposed to perform optimization of heat transfer processes, which are essential for hierarchical cycles. Proposed...

  • Exergy Losses in the Szewalski Binary Vapor Cycle

    Publikacja

    - ENTROPY - Rok 2015

    In this publication, we present an energy and exergy analysis of the Szewalski binary vapor cycle based on a model of a supercritical steam power plant. We used energy analysis to conduct a preliminary optimization of the cycle. Exergy loss analysis was employed to perform a comparison of heat-transfer processes, which are essential for hierarchical cycles. The Szewalski binary vapor cycle consists of a steam cycle bottomed with...

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  • Chapter 7: Engineering Thermodynamics and the Carnot Cycle

    Publikacja

    - Rok 2016

    The chapter presents information about thermodynamics and thermodynamic cycles, especially the history and meaning of Carnot Cycle as well as P-v and T-s Diagrams

  • Smart Innovation Management in Product Life Cycle

    Publikacja

    The present paper proposes a framework for smart innovation management of the product using a Smart Knowledge Management System comprising Set of Experience Knowledge Structure (SOEKS) and Decisional DNA. This proposed system will allow the entrepreneurs and organizations to perform the innovation process technically and quickly as this framework will store knowledge as well as experiences of the past innovations done in various...

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  • Power enhancement of the Brayton cycle by steam utilization

    Publikacja
    • K. Jesionek
    • A. Chrzczonowski
    • P. Ziółkowski
    • J. Badur

    - Archives of Thermodynamics - Rok 2012

    The paper presents thermodynamic analysis of the gas-steam unit of the 65 MWe combined heat and power station. Numerical analyses of the station was performed for the nominal operation conditions determining the Brayton and combined cycle. Furthermore, steam utilization for the gas turbine propulsion in the Cheng cycle was analysed. In the considered modernization, steam generated in the heat recovery steam generator unit is directed...

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  • Machinery Life Cycle Efficiency Models for their Sustainable Development

    Publikacja
    • J. Flizikowski
    • A. Tomporowski
    • R. Kasner
    • A. Mroziński
    • W. Kruszelnicka

    - System Safety: Human - Technical Facility - Environment - Rok 2019

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  • On the independence number of some strong products of cycle-powers

    In the paper we give some theoretical and computational results on the third strong power of cycle-powers, for example, we have found the independence numbers alpha((C^2_10)^⊠3) = 30 and alpha((C^4 _14)^⊠3) = 14. A number of optimizations have been introduced to improve the running time of our exhaustive algorithm used to establish the independence number of the third strong power of cycle-powers. Moreover, our results establish...

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  • Integration of adsorption chillers with combined cycle gas turbine

    Publikacja
    • K. Sztekler
    • W. Kalawa
    • Ł. Mika
    • J. Krzywanski
    • K. Grabowska
    • M. Sosnowski
    • Ł. Lis
    • W. Nowak
    • A. Łukasz
    • T. Siwek

    - E3S Web of Conferences - Rok 2019

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  • Enhancement of the Brayton cycle efficiency by water or steam utilization

    Publikacja
    • K. Jesionek
    • A. Chrzczonowski
    • P. Ziółkowski
    • J. Badur

    - Transactions of the Institute of Fluid-Flow Machinery - Rok 2013

    In the paper, thermodynamic analysis of two modifications of a Brayton cycle into enhancement cycles with water/steam injection are discussed. The first one deals with a STIG modified system with both interstage compressed air cooling and air heating (heat regeneration) before combustion chamber. The second one, mainly devoted to higher steam/air ratio, is connected with separate steam production in a HRSG. The analysis has been...

  • Journal of Nuclear Fuel Cycle and Waste Technology

    Czasopisma

    ISSN: 1738-1894 , eISSN: 2288-5471

  • Analysis of cell cycle distribution

    Dane Badawcze
    open access

    The dataset comprehensively details the distribution of A549, H226, and H460 cell lines in various cell cycle phases following treatment with the IC90 concentration of selected anthraquinones. The analysis was performed using the Flowing Software 2.

  • Cykl życiowy zespołu mieszkaniowego. Life cycle of the Housing Estate.

    Publikacja

    - Rok 2004

    Projektowanie zespołu mieszkaniowego powinno uwzględniać jego oddziaływanie na środowisko przyrodniczo-społeczne. Całkowite oddziaływanie zespołu mieszkaniowego na środowisko można ocenić stosując metodę oceny cyklu życiowego wszystkich jego elemrntów. Omówiono problemy projektowania cyklu życiowego oraz zagadnienia adaptowalności budynków, projektowania uniwersalnego oraz projektowania uczestniczącego.

  • Exergy analysis of the Szewalski cycle with a waste heat recovery system

    Publikacja

    - Archives of Thermodynamics - Rok 2015

    The conversion of a waste heat energy to electricity is now becoming one of the key points to improve the energy efficiency in a process engineering. However, large losses of a low-temperature thermal energy are also present in power engineering. One of such sources of waste heat in power plants are exhaust gases at the outlet of boilers. Through usage of a waste heat regeneration system it is possible to attain a heat rate of approximately...

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  • Static Model of Steam/Water Cycle for Thermal and Economic Analysis

    Publikacja

    The thermodynamic efficiency of typical conventional and nuclear power plants is insufficient. A large amount of the generated heat is removed to the environment and regarded as a waste. A solution which is commonly used to increase the efficiency and profitability of the existing and planned power plants refers to cogeneration of heat and power. To prepare sophisticated thermodynamic and economic analyses, a precise static model...

  • Modeling of a Combined Cycle Gas Turbine Integrated with an Adsorption Chiller

    Publikacja
    • K. Sztekler
    • W. Kalawa
    • L. Mika
    • J. Krzywanski
    • K. Grabowska
    • M. Sosnowski
    • W. Nowak
    • T. Siwek
    • A. Bieniek

    - ENERGIES - Rok 2020

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  • An Impact of Environmental Disturbances on Combined Cycle Power Plant Control

    Publikacja

    Combined cycle power plants operate at thermal efficiency approaching 60 percent. In the same time their performance presents several problems that have to be addressed. E.g. gas turbines are very sensitive to backpressure exerted on them by the heat recovery steam generators as well as to ambient pressure and temperature.

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  • The significance of the properties of water for the working cycle of the kinesin molecular motor

    Explicit solvent molecular dynamics simulations were performed in this study to investigate and discuss several aspects of the influence of the properties of water on the working cycle of a molecular motor from the kinesin superfamily. The main objects of attention were: the binding of the neck linker and the association of the kinesin and the tubulin. The docking of the neck linker is considered a crucial event during the working...

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  • Methods of estimating the cost of traffic safety equipment’s life cycle

    n the article, the authors discuss the preliminary information necessary to determine the scope and direction of further research conducted within the project called “The influence of time and operating conditions on the durability and functionality of road safety elements”. The main objective of the project is to develop the concept of a method for optimizing the life cycle costs of road safety devices. The authors draw attention...

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  • The selected roof covering technologies in the aspect of their life cycle costs

    In the article is presented an analysis of the life cycle costs calculation for selected roof coverings. The scope of research includes costs of construction, maintenance and demolition of the roof covering structure for two alternative technologies – the traditional and new generation. On the presented example of an industrial building with a roof area of 1000 m², the above costs are taken to consideration for the roof covering...

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  • The rigid and flexible road pavements in terms of life cycle costs

    The cost of road pavement construction, its durability and reliability depends on many factors, including: the scope and detail of the technical design, quality of work but also the scope of works related to its maintenance, conservation and operation. Determining the amount of rational expenses, in terms of the life cycle cost of the pavement, requires determination and consideration of the above issues, already at the planning...

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  • Proposed method for estimating the costs of safety barrier life cycle

    Today barrier types are frequently selected for their price with little regard for the total costs the structure will incur over its lifetime. One of the basic tools designed to manage road infrastructure is the life cycle cost method (LCC, Life cycle cost). It sums up the costs to plan, design, build, operate (use and maintain) and decommission a road structure. Having developed dynamically at the turn of the century the method...

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  • Incorporation of the sulfur cycle in sustainable nitrogen removal systems - A review

    In wastewater treatment systems, sulfur (S) removal processes are generally based on heterotrophic sulfate (SO42−) reduction by sulfate reducing bacteria and S-dependent autotrophic denitrification by sulfur oxidizing bacteria. A combination of either two cycles (N and S) or three cycles (N, S and C) appears to be a viable approach to sustainable wastewater treatment, resulting in energy savings and reduction of sludge production....

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  • Technical and Economic Analysis of the Supercritical Combined Gas-Steam Cycle

    Publikacja

    Combined cycle power plants are characterized by high efficiency, now exceeding 60%. The record-breaking power plant listed in the Guinness Book of World Records is the Nishi-Nagoya power plant commissioned in March 2018, located in Japan, and reaching the gross efficiency of 63.08%. Research and development centers, energy companies, and scientific institutions are taking various actions to increase this efficiency. Both the gas...

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  • Assessment of Environmental Loads in the Life Cycle of a Retail and Service Building

    Publikacja

    - ENERGIES - Rok 2022

    In order to achieve the European Union’s climate and energy goals, investments are required, mainly in the areas of energy efficiency, renewable energy sources and infrastructure. Buildings are responsible for almost half of total energy consumption, and nearly 80% of them are energy and ecologically inefficient. The policy of European countries is increasingly more focused on facilities with the highest potential in the areas...

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  • Investigation of Mechanical and Microstructural Properties of Welded Specimens of AA6061-T6 Alloy with Friction Stir Welding and Parallel Friction Stir Welding Methods

    Publikacja
    • A. Ghiasvand
    • M. M. Yavari
    • J. Tomków
    • J. W. Grimaldo Guerrero
    • H. Kheradmandan
    • A. Dorofeev
    • S. Memon
    • H. A. Derazkola

    - Materials - Rok 2021

    The present study investigates the effect of two parameters of process type and tool offset on tensile, microhardness, and microstructure properties of AA6061-T6 aluminum alloy joints. Three methods of Friction Stir Welding (FSW), Advancing Parallel-Friction Stir Welding (AP-FSW), and Retreating Parallel-Friction Stir Welding (RP-FSW) were used. In addition, four modes of 0.5, 1, 1.5, and 2 mm of tool offset were used in two welding...

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  • Hat problem on odd cycles

    The topic is the hat problem in which each of n players is randomly fitted with a blue or red hat. Then everybody can try to guess simultaneously his own hat color by looking at the hat colors of the other players. The team wins if at least one player guesses his hat color correctly, and no one guesses his hat color wrong; otherwise the team loses. The aim is to maximize the probability of a win. In this version every player can...

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  • Tradycyjne cykle życia oprogramowania

    Publikacja

    - Rok 2002

    Praca prezentuje uznane i powszechnie stosowane cykle wytwarzania i ewolucjioprogramowania systemów informatycznych, takie jak cykl klasyczny (kaskado-wy), model V wytwarzania z zapewnianiem jakości, prototypowanie wymagań, mo-del spiralny i przyrostowy. Nieduży przykład ilustruje sposób doboru strate-gii wytwarzania.

  • Współczesne cykle wytwarzania oprogramowania

    Publikacja

    Praca omawia inne stosowane współcześnie cykle wytwórcze. Do dyskusji wybra-ne zostały modele, których wykorzystanie przynosi satysfakcjonujące rezulta-ty (wytwarzanie obiektowe, ponowne użycie oprogramowania z wykorzystaniemkomponentów i wzorców, ponowna inżynieria systemów), podejścia, których sto-sowanie nie jest oceniane jednoznacznie (jak to ma miejsce w wypadku metody-ki SSM Checklanda) oraz modele uważane, obok wymienionych,...