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Tytuł:
Performance assessment of industrial system (African Textile Manufacturers, LTD) through copula linguistic approach
Autorzy:
Abubakar, Muhammad Idris
Singh, Vijay Vir
Powiązania:
https://bibliotekanauki.pl/articles/406421.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
availability
reliability
MTTF
cost analysis
supplementary variable
Opis:
This paper deals with the performance assessment of a textile industry, namely African Textile Manufactures (ATM) Ltd., in Chalawa, Kano industrial estate, Federal Republic of Nigeria. The entire system ATM has different sections of machines for processing various assignments. The machines in the sections have diverse capabilities. We assumed the following subsystems: spinning, weaving, pretreatment, printing, and steaming. The failure rates of subsystems are constant, and they follow exponential distribution, while the repairs follow two types of distributions, namely general distribution and Gumbel–Hougaard family copula distribution. The system analyzed by employing supplementary variable and the Laplace transform. Various measures of reliability have been computed for differential values of failures and two types of repair. The conclusions and some recommendations are addressed to improving the management of ATM.
Źródło:
Operations Research and Decisions; 2019, 29, 4; 5-22
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poisson area-biased Ailamujia Distribution and its applications in environmental and medical sciences
Autorzy:
Aijaz, Ahmad
Ain, S. Qurat ul
Afaq, Ahmad
Tripathi, Rajnee
Powiązania:
https://bibliotekanauki.pl/articles/2108223.pdf
Data publikacji:
2022-09-14
Wydawca:
Główny Urząd Statystyczny
Tematy:
compound technique
Poisson distribution
area-biased Ailamujia distribution
reliability analysis
order statistics
maximum likelihood estimator
Opis:
In this paper, a new Poisson area-biased Ailamujia distribution has been formulated to analyse count data. It was created by combining two distributions: the Poisson and areabiased Ailamujia distributions, using the compounding technique. Several distributional properties of the formulated distribution were studied. Its ageing characteristics were determined and expressed explicitly. A variety of diagrams were used to demonstrate the characteristics of the probability mass function (pmf) and the cumulative distribution function (cdf). The parameter of the developed model was estimated by employing the maximum likelihood estimation approach. Finally, two data sets were used to demonstrate the effectiveness of the investigated distribution.
Źródło:
Statistics in Transition new series; 2022, 23, 3; 167-184
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods and models of reliable software protection systems
Metody i modele systemów ochrony niezawodności oprogramowania
Autorzy:
Aleksander, M.
Petrov, A.
Powiązania:
https://bibliotekanauki.pl/articles/312454.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
software protection systems
software reliability
executable code
analysis of executable code
systemy ochrony
niezawodność oprogramowania
kod wykonywalny
analiza kodu wykonywalngo
Opis:
The article deals with the problems in constructing a protection system of executable code. The techniques of breaking the integrity of executable code and ways to eliminate them are described. The adoption of virtual machine technology in the context of executable code protection from analysis is considered. The substantiation of the application of virtual machines as the best way to oppose the analysis of executable code is made. The protection of executable code by transferring the protected code in a virtual execution environment is considered. An efficient implementation of the method is proposed. Also, general characteristics of information systems software life cycle are specified in this paper, considered software protection applications reliability questions and use of fail-safe ensuring programming. In addition there presented some known models used for software debugging and operating.
Artykuł dotyczy problemów w opracowywaniu systemów ochrony kodu wykonywalnego. Zostały opisane techniki przerwania integralności kodu wykonywalnego. Uwzględniono zastosowanie technologii maszyn wirtualnych w kontekście ochrony analizy kodu wykonywalnego. Przedstawiono dowód na zastosowanie maszyn wirtualnych, jako najlepszego sposobu przeciwdziałania analizy kodu wykonywalnego. Ponadto przedstawiono ogólną charakterystyka systemów informatycznych, cyklu życia oprogramowania, ochrony oprogramowania, kwestie niezawodności aplikacji oraz zapewnienia bezawaryjności działania oprogramowania
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 6; 37-46
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensitivity analysis of multiple fault test and reliability measures in integrated GPS/INS systems
Autorzy:
Almagbile, A.
Wang, J.
Ding, W.
Knight, N.
Powiązania:
https://bibliotekanauki.pl/articles/130262.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
GPS/INS integration
Kalman filtering
multiple faults
reliability measures
sensitivity analysis
integracja systemów GPS/INS
filtracja Kalmana
uszkodzenia wielokrotne
miary niezawodności
analiza wrażliwościowa
Opis:
Based on Kalman filtering, multi-sensor navigation systems, such as the integrated GPS/INS system, are widely accepted to enhance the navigation solution for various applications. However, such integrated systems do not always provide robust and stable navigation solutions due to unmodelled measurements and system dynamic errors, such as faults that degrade the performance of Kalman filtering for such integration. Single fault detection methods based on least squares (snapshot) method were investigated extensively in the literature and found effective to detect the fault at either sensor level or integration level. However, the system might be contaminated by multiple faults simultaneously. Thus, there is an increased likelyhood that some of the faults may not be detected and identified correctly. This will degrade the accuracy of positioning. In this paper multiple fault test and reliability measures based on a snapshot method were implemented in both the measurement model and the predicted states model for use in a GPS/INS integration system. The influences of the correlation coefficients between fault test statistics on the performances of the faults test and reliability measures were also investigated. The results indicate that the multiple fault test and reliability measures can perform more effectively in the measurement model than the predicted states model due to weak geometric strength within the predicted states model.
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2011, 22; 25-37
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Step by Step Approach for Evaluating the Reliability of the Main Engine Lube Oil System for a Ships Propulsion System
Autorzy:
Anantharaman, M.
Khan, F.
Garaniya, V.
Lewarn, B.
Powiązania:
https://bibliotekanauki.pl/articles/116248.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Ship Propulsion
Main Engine
Main Propulsion
Lubricating Oil System
Markov Analysis
reliability
Propulsion System
Engine Lube Oil System
Opis:
Effective and efficient maintenance is essential to ensure reliability of a ship's main propulsion system, which in turn is interdependent on the reliability of a number of associated sub- systems. A primary step in evaluating the reliability of the ship's propulsion system will be to evaluate the reliability of each of the sub- system. This paper discusses the methodology adopted to quantify reliability of one of the vital sub-system viz. the lubricating oil system, and development of a model, based on Markov analysis thereof. Having developed the model, means to improve reliability of the system should be considered. The cost of the incremental reliability should be measured to evaluate cost benefits. A maintenance plan can then be devised to achieve the higher level of reliability. Similar approach could be considered to evaluate the reliability of all other sub-systems. This will finally lead to development of a model to evaluate and improve the reliability of the main propulsion system.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 3; 367-371
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of defective turbocharging system on the safety and reliability of large marine diesel engine
Autorzy:
Anantharaman, M.
Islam, R.
Sardar, A.
Garaniya, V.
Khan, F.
Powiązania:
https://bibliotekanauki.pl/articles/1841550.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
marine power plant
diesel engine
large marine diesel engine
turbocharging system
safety and reliability
Fault Tree Analysis
main engine
maximum continuous rating
Opis:
Today huge capacity sea-going vessels are propelled by mega high-powered marine diesel engines, referred to as Main Engine. Turbocharging system is an integral part of large marine diesel engine plant, contributing to their safety, reliability, and efficiency. Defects in the turbocharging system could result in higher fuel consumption, erratic running of the Main Engine, and in the worst scenario may result in the stoppage of the Main Engine at sea. An inefficient turbocharging system may also cause major damage to turbochargers, resulting in undesirable accidents out at sea. To avoid such undesirable accidents and ensure smooth operations of the Main Engine, it is required to address this concern. The aim of this research is to study the turbocharging system for a large Main Engine using a Kongsberg engine simulator. Various malfunction of the Turbocharging system is considered, relevant data is collected and analysed. Moreover, a Fault Tree Analysis, (FTA) is considered to identify the top undesirable event which is the failure of the Main Engine. Based on the results of this study, various steps are suggested to avoid failure of the Main Engine due to the defective turbocharging system.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 189-198
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using Reliability Block Diagrams and Fault Tree circuits, to develop a Condition Based Maintenance Model for a Vessel’s Main Propulsion System and Related Subsystems
Autorzy:
Anantharaman, M.
Powiązania:
https://bibliotekanauki.pl/articles/117168.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Fault Tree
Main Engine
Propulsion System
Condition Based Maintenance (CBM)
Planned Maintenance System
Reliability Block Diagrams
Main Propulsion
fault tree analysis (FTA)
Opis:
Merchant shipping has undergone a great transformation over the past three decades. The shipping market is highly competitive, which coupled with high crewing and fuel costs, leads to high operational costs. One of the paramount factor involved in vessel operation is the Maintenance cost and there is a dire need to keep this cost to a minimum. Fortunately the earlier policy of repair only maintenance in commercial shipping has been done away with, and was replaced by the policy of preventive maintenance. Planned Maintenance System was introduced by ship management companies in the early 90’s. Planned Maintenance offered benefits over the repair only policy, but has its own demerits. Many a time machinery equipment is opened up for routine maintenance after a specified time interval, irrespective of the need. This could lead to potential failures, which is explained by the fact that preventive maintenance resulted in meddling of a well set piece of machinery equipment, leading to its subsequent failure. This is where Condition based maintenance or CBM steps into prominence. CBM monitors the health of the machinery equipment, analyses the condition and helps you in decision making. The Main Propulsion system forms the heart of a vessel and we need to ensure its reliability, together with the reliability of its associated sub-systems. The entire system can be represented by reliability block diagrams, to show the interdependence of various components comprising the system. This helps in the decision making process of CBM whereby ship’s engineer may decide to stop the running machinery equipment, open and overhaul the same, else postpone the overhaul for a later safe date.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 3; 409-413
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie ryzyka w eksploatacji oczyszczalni ścieków
Modeling of risk in the operation of wastewater treatment plants
Autorzy:
Andraka, D.
Dzienis, L.
Powiązania:
https://bibliotekanauki.pl/articles/1819075.pdf
Data publikacji:
2013
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
eksploatacja oczyszczalni
modelowanie ryzyka
reliability analysis
risk modeling
operation of wastewater treatment
Opis:
This paper presents the results of research using Monte Carlo simulation, which aim was to assess various aspects of the risk associated with operation of the wastewater treatment plant. First part of the research included modeling of wastewater treatment plant effluent quality (using BOD5 as the example and assuming log-normal distribution of the variable) together with inspection results (check of compliance with fixed standards). Monte Carlo simulations of annual operational cycles of the plant allowed for creation of nomographs showing relations between coefficient of reliability (ratio of mean value of BOD to the fixed standard), coefficient of variation (ratio of standard deviation to mean value of variable) and reliability of the plant (expressed as probability of effluent concentration lower than fixed standard) as well as risk of the negative inspection result (probability that number of inspected samples that do not comply with required quality of the effluent is greater than fixed standard). Using such nomographs plant operator can evaluate for example the target mean value of effluent concentration to achieve required reliability and acceptable risk. Another part of the study included simulation of the water quality in the river after the discharge of wastewater. Using static model of pollutants budget in a mixed water (river + wastewater) and implementing random values of variables into the model (according to Monte Carlo simulation rules) the variations of river water quality were observed. It was found that although mean values of variables (among them quality and quantity of the discharge) result in good mixed river water quality, the probability of temporary degradation of river quality is significantly high. The results of simulation show that capacity of the river to accept pollutants load should be taken into account together with predicted variations in wastewater discharges, when establishing rules for water disposal in the river basin.
Źródło:
Rocznik Ochrona Środowiska; 2013, Tom 15, cz. 2; 1111-1125
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diesel locomotive efficiency and reliability improvement as a result of power unit load control system modernisation
Poprawa efektywności i niezawodności lokomotyw spalinowych w wyniku modernizacji układu sterowania obciążeniem zespołu napędowego
Autorzy:
Babeł, M.
Szkoda, M.
Powiązania:
https://bibliotekanauki.pl/articles/1365836.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
reliability
operation
modernisation of locomotives
LCC analysis
niezawodność
eksploatacja
modernizacja lokomotyw
analiza LCC
Opis:
The article presents an idea of modernisation of a diesel locomotive power unit load control using SM31 locomotive. In the proposed solution an electronic rotations and power governor of a8C22W diesel engine is applied, developed in cooperation with Lokel (the Czech Republic) and Newag S.A. (Poland), in which a new optimal operational characteristic is realized in the locomotive. This characteristic was selected following optimization calculations using a mathematical model mapping the real conditions of the motor-generator work in a diesel engine. Test stand experimental investigations together with an over three-year supervised observation of the locomotive equipped with the electronic governor have proved its correct and reliable operation. Based on the data collected in supervised observation the efficiency of the proposed solution has been assessed, supported by an LCC (Life Cycle Cost) analysis.
W artykule przedstawiono koncepcję modernizacji układu sterowania obciążeniem zespołu napędowego lokomotywy spalinowej na przykładzie lokomotywy serii SM31. Proponowane rozwiązanie polega na zastosowaniu elektronicznego regulatora obrotów i mocy silnika wysokoprężnego a8C22W, opracowanego w wyniku wspólnych prac autorów z firmą Lokel (Czechy) i Newag S.A. (Polska), realizującego na lokomotywie nową, optymalną charakterystykę eksploatacyjną. Charakterystyka ta została wybrana w wyniku obliczeń optymalizacyjnych z wykorzystaniem opracowanego modelu matematycznego odwzorowującego rzeczywiste warunki pracy zespołu silnik-prądnica na lokomotywie spalinowej. Badania stanowiskowe oraz ponad trzyletnia eksploatacja obserwowana lokomotywy z zamontowanym regulatorem elektronicznym wykazały poprawne i niezawodne jego działanie. Bazując na danych zgromadzonych podczas eksploatacji obserwowanej, przeprowadzono ocenę efektywności proponowanego rozwiązania w oparciu o analizę LCC (Life Cycle Cost).
Źródło:
Eksploatacja i Niezawodność; 2016, 18, 1; 38-49
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operational reliability model of the production line
Model operacyjno-niezawodnosciowy linii produkcyjnej
Autorzy:
Bartnik, G.
Marciniak, A.W.
Powiązania:
https://bibliotekanauki.pl/articles/792119.pdf
Data publikacji:
2011
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
probabilistic network
knowledge engineering
reliability model
production line
Bayesian network
medical device
risk analysis
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11C
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water absorption, impact resistance and strength reliability of concrete incorporating sintered fly ash aggregate under drop weight impact load
Autorzy:
Baskaran, Ranjith Babu
Nagarajan, M.
Powiązania:
https://bibliotekanauki.pl/articles/38891513.pdf
Data publikacji:
2023
Wydawca:
Instytut Podstawowych Problemów Techniki PAN
Tematy:
sintered fly ash aggregate
water absorption
compressive strength
impact test
reliability analysis
Opis:
ASTM and ACI methods were used to determine the water absorption and impact resistance of M30 grade concrete containing different percentages of sintered fly ash aggregate (SFA) ranging from 20%, 40%, 60%, 80%, and 100%. In the concrete laboratory, the parameters of the concrete mix, including fresh density, slump value, dry density, compressive strength, and impact resistance, were determined. The fresh and dry densities of concrete mix decrease as the quantity of SFA used as substitute increases. The 100% substitution of SFA in concrete results in a slump value of 200 mm, a fresh density of 1946 kg/m3, a dry density of 1911 kg/m3, and water absorption of 3.5%, with a compressive strength of 12.3 MPa. For the drop weight impact resistance test, reliability analysis was conducted to determine the level of reliability of each concrete mix for varying SFA. Using reliability analysis, the failure analysis owing to impact load determined the energy absorption of the concrete mix.
Źródło:
Engineering Transactions; 2023, 71, 2; 197-211
0867-888X
Pojawia się w:
Engineering Transactions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design and numerical simulation of the new design of the gripper for manipulating of the rotational parts
Autorzy:
Basova, Y.
Nutsubidze, K.
Ivanova, M.
Slipchenko, S.
Kotliar, A.
Powiązania:
https://bibliotekanauki.pl/articles/327310.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
gripper
kinematics
computer analysis
reliability
chwytak
analiza komputerowa
kinematyka
niezawodność
Opis:
The analysis of the field of application of gripper is carried out. Are allocated perspective areas of development of a robotics. The main difficulties in the application of kinematic schemes for gripping devices with rotary finger movement are described. The prospective application of the kinematic scheme of the gripper with a straight-parallel plane-parallel motion of the fingers is proved when manipulating an object of the "shaft" type. A new scheme of a gripper with a rectilinear plane-parallel finger movement is presented. Its design is simpler and cheaper than known devices of this type. The capability of the gripper design in the engineering analysis environment has been fulfilled. Numerous computer studies of both individual design elements and pairs of objects that are in interaction have confirmed the operability of the developed design. It is established that the frictional force in the mobile components of the gripper design is insignificant, which will not create the prerequisites for a significant increase in size.
Źródło:
Diagnostyka; 2018, 19, 4; 11-18
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability, availability, and maintainability analysis of the propulsion system of a fleet
Autorzy:
Bayraktar, Murat
Nuran, Mustafa
Powiązania:
https://bibliotekanauki.pl/articles/24202522.pdf
Data publikacji:
2022
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
ship propulsion system
reliability
availability
maintainability
RWB software
RAM analysis
Opis:
New systems are produced and developed to meet specific needs, and their reliability is the most important issue. In the maritime industry, evaluating failures in a ship’s propulsion system results in high costs and the loss of prestige for the company. Land/sea fleet employees need to detect and minimize the failures that may occur in ship propulsion systems in advance to ensure the continuity of the ships’ operations. In this study, the recorded failure data of four different ships belonging to a fleet in the last 10 years are used. Failures were examined as a whole since the ships have similar propulsion systems. The obtained failure data were grouped, and the average time to fix the failures was determined by the chief engineer and made suitable for reliability, availability, and maintainability (RAM) analysis. A suitable model was created for grouped failures by Isograph’s RWB software. As a result of the analysis of the propulsion system and its subsystems, the main engine of the ship was shown to have the best reliability. Furthermore, the most important components were the cylinders of the main engine as subsystems. This study highlights the components that are important to the reliability of a propulsion system. Thanks to the RAM analysis, improvements can be pinpointed on a ship’s propulsion system, which will increase the operations of the maritime industry. Reducing failures will further increase the confidence in maritime transport and strengthen its place among the modes of transportation. This study provides a valuable resource for academicians, experts, as well as companies working on reliability, availability, and maintainability in the future.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 70 (142); 63--70
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of an innovative approach for complex, causally determined failure chains
Autorzy:
Bielefeld, O.
Dransfeld, H.
Schlüter, N.
Winzer, P.
Powiązania:
https://bibliotekanauki.pl/articles/407289.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
model-based failure analysis
reliability
quality
safety
Opis:
A high number of examples in today’s global industry prove that it is difficult to ensure a certain level of quality. One possible reason is the increasing complexity of modern mechatronic product systems. Interface problems due to several involved science disciplines and the lack of understanding subsystems, which are delivered by different suppliers, make it difficult to identify critical components and specifications of elements. Furthermore, it is even harder to estimate the effects of elements because of their unknown dependencies and relations. Therefore it becomes more and more improbable to develop a safe, sustainable and high quality product right from the beginning. In order to understand failures in complex system structures today’s engineering industries need a generic approach that increases the understanding of systems, identifies critical components and considers the different levels of a system. It shall examine failures that cause system errors but also failures that limit system functions. Thus, it is necessary to model and simulate the causally failure chains and analyse over several system levels and elements with their dependencies. This leads to a better understanding of the whole picture of cause and effect. This research paper points out which requirements this new model-based approach has to fulfill and how it is possible to link quality and reliability methods to achieve an overall understanding and analysis of a complex system to assure high quality and sustainability.
Źródło:
Management and Production Engineering Review; 2017, 8, 3; 3-12
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System reliability optimisation of Cooling-cum-Condensate-Extraction system
Optymalizacja niezawodności układu chłodzenia z systemem odprowadzania skroplin
Autorzy:
Biswal, G. R.
Powiązania:
https://bibliotekanauki.pl/articles/302113.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
cooling-cum-condensate-extraction system
fault tree analysis
system reliability
system safety
machine health monitoring
układ chłodzenia z odprowadzeniem skroplin
analiza drzewa błędów
niezawodność systemu
bezpieczeństwo systemu
monitorowanie stanu maszyn
Opis:
A novel methodology is presented for condensation in power generation plants; this section is the main intersection of heat loss, typically 40% thermal efficiency of a plant. Condensate section is interfaced with the generating section to enhance the active contribution of the system. Both the cooling section and the condensate section are integrated and interfaced through the low-pressure and high-pressure cycles to attain the improved electrical efficiency, which affects the heat transfer capability of the power generation plants. This paper proposess a Cooling-cum-Condensate-Extraction System (CCES), to dedicate a 36-MW- captive power plant. The paper is dedicated for the design and development of an effective CCES, analyzing its impact over the systems in terms of system reliability optimization, and the role of real-time optimization. The designed model also contributes in discharging lesser amount of flu gases as against existing technologies with its improved active operation hours.
W artykule przedstawiono nowatorską metodologię procesu skraplania do zastosowania w części kondensacyjnej elektrowni, gdzie dochodzi do największych strat ciepła – przeważnie aż 40% wydajności termicznej elektrowni. W proponowanym rozwiązaniu instalację kondensacyjną sprzężono z częścią prądotwórczą aby zwiększyć aktywny wkład systemu. Część chłodzącą zintegrowano i sprzężono z częścią kondensacyjną poprzez cykle nisko- i wysokociśnieniowe, uzyskując w ten sposób lepszą wydajność elektryczną, co ma wpływ na zdolność wymiany ciepła w elektrowni. W artykule przedstawiono układ chłodzenia z systemem odprowadzania skroplin (CCES) przeznaczony dla elektrowni potrzeb własnych o mocy 36 MW. Pracę poświęcono projektowaniu i konstrukcji efektywnego CCES, analizując jego wpływ na systemy elektrowni w zakresie optymalizacji niezawodności systemów oraz roli optymalizacji w czasie rzeczywistym. Zaprojektowany przez nas model, w porównaniu z istniejącymi technologiami, przyczynia się również do zmniejszenia emisji gazów odlotowych dzięki zoptymalizowanemu czasowi pracy.
Źródło:
Eksploatacja i Niezawodność; 2016, 18, 1; 117-122
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 165

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