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1

Fault detection in measuring systems of power plants

100%
Gluch J.
Polish Maritime Research
|
2008
|
tom 15
|
nr 4
This paper describes possibility of forming diagnostic relations based on application of the artifical neural networks (ANNs), intended for the identifying of degradation of measuring instruments used in developed power systems. As an example a steam turbine high-power plant was used. And, simulative calculations were applied to forming diagnostic neural relations. Both degradation of the measuring instruments and simultaneously occurring degradation of the measuring instruments and thermal cycle component devices, were taken into account. Good quality of diagnostic neural relations was stated. They make it possible to distinguish degradation of measuring instruments from degradation of thermal cycle components. The calculated errors of identification of dergraded devices and measuring instruments in the case of simultaneous occurence of three different degradations were on the level of 0.25 %. Performance of the relations was presented by using an example based on industrial practice
2

Selected problems of determining an efficient operation standard in contemporary heat-and-flow diagnostics

100%
Gluch J.
Polish Maritime Research
|
2009
|
nr Special Issue
In this paper are specified causes of ambiguities and difficulties in determining an efficient operation standard for land and marine turbine power plants. Two of them, namely: lowering values of working media inlet parameters and changes in configuration of connections between component devices of thermal cycles, have been analyzed. As a remedy for resulting difficulties a thermal cycle computational model of modular structure has been proposed. As showed, the tuning of the computational model with respect to correct measurements by elaborating individual corrections for calculation coefficients of computational methods used for particular devices ensures good accuracy of determination of unserviceability symptoms in these conditions. Introduction to the modular computational model – of control modules making use of valve opening indicators in DCS system ensures good accuracy also in the case of changes in structure of complex power object
3

Profesor Edward Taylor poleca spoldzielczosc

75%
Gluch J.
Zeszyt Naukowy. Wyższa Szkoła Handlu i Usług w Poznaniu
|
2003
|
tom 06
75-88
4

Rozmieszczenie gatunkow z rodzaju Anthoxanthum L. na terenie wojewodztw katowickiego i bielskiego

63%
Gluch J., Rostanski A.
Acta Biologica Silesiana
|
1994
|
tom 25
65-80
5

Operating and economic conditions of cooling water control for marine steam turbine condensers

51%
Blaszczyk A., Gluch J., Gardzilewicz A.
Polish Maritime Research
|
2011
|
tom 18
|
nr 3
The article presents the operational and economic analysis of controlling the cooling water flow in marine steam turbine power plants. The analysis bases on selected designs of the main condenser cooling water pumps and makes use of the results of investigations performed in inland power plants. Special attention was focused on marine aspects of the operation of those systems
6

Comparative analysis of thermodynamic cycles of selected nuclear ship power plants with high-temperature helium-cooled nuclear reactor

51%
Szewczuk-Krypa N., Grzymkowska A., Gluch J.
Polish Maritime Research
|
2018
|
tom 25
|
nr Special Issue S1
This paper presents a comparative analysis of thermodynamic cycles of two ship power plant systems with a hightemperature helium- cooled nuclear reactor. The first of them is a gas system with recuperator , in which classical gas chamber is substituted for a HTGR reactor (High Temperature Gas-cooled Reactor) . The second of the considered cycles is a combined gas-steam system where working medium flux from gas turbine outlet is directed into waste heat boiler and its heat is utilized for production of superheated steam to drive steam turbine. Preliminary calculations of the combine cycles showed that it is necessary to expand the system by adding to its steam part an inter-stage overheat for secondary steam, owing to that a required degree of steam dryness at outlet from the turbine can be reached, ensuring its correct operational conditions. The analyzed power systems were compared to each other with regard to efficiency of their thermodynamic cycles. Also, efficiency of particular cycles were subjected to optimization in respect to such parameters as : working gas temperature at outlet from reactor in gas system as well as steam pressure at outlet from waste heat boiler and partition pressure in steam part of combined system. Advantages of nuclear power plants compared with the classical power systems dominating currently in sea transport were also discussed
7

Effect of plough body on the quality of ploughing

51%
Waszkiewicz C., Klonowski J., Gluch J.
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
|
2009
|
nr 54 Agric.Forest Eng.
5-9
8

Analysis of application of feed-water injector heaters to steam power plants

51%
Trela M., Kwidzinski R., Gluch J., Butrymowicz D.
Polish Maritime Research
|
2009
|
nr Special Issue
Steam-water injectors are devices in which exchange of mass, momentum and energy between two fluids being in direct contact, occurs.They can operate as pumps, mixers or direct contact heat exchangers. In the last aspect their use as feed-water heaters in Rankine thermal cycle of steam power plants both in land and sea applications (to merchant and naval ships) is very interesting. This paper presents selected results of heat-and-flow investigations of a supercritical steam-water injector, obtained in Institute of Fluid Flow Machinery, Polish Academy of Sciences (IMP PAN). On their basis value of average heat transfer coefficient for mixing chamber was determined; the obtained values were even a few dozens greater than those for classical shell-and-tube heaters. In the theoretical part of this work is presented an original injector model based on balances of mass, momentum and energy, written for control volumes containing separately particular elements of injector. On the basis of the model flow parameters in characteristic cross-sections of injector were determined. The calulations were performed for two different injectors tested in IMP PAN (Gdańsk) and SIET (Piacenza, Italy), and their good compliance with experimental data was achieved
9

Analysis of possible application of high-temperature nuclear reactors to contemporary large-output steam power plants on ships

51%
Kowalczyk T., Gluch J., Ziolkowski P.
Polish Maritime Research
|
2016
|
tom 23
|
nr 2
This paper is aimed at analysis of possible application of helium to cooling high-temperature nuclear reactor to be used for generating steam in contemporary ship steam-turbine power plants of a large output with taking into account in particular variable operational parameters. In the first part of the paper types of contemporary ship power plants are presented. Features of today applied PWR reactors and proposed HTR reactors are discussed. Next, issues of load variability of the ship nuclear power plants , features of the proposed thermal cycles and results of their thermodynamic calculations in variable operational conditions, are presented
10

Comparison analysis of selected nuclear power plants supplied with helium from high-temperature gas-cooled reactor

51%
Szewczuk-Krypa N., Drosinska-Komor M., Gluch J., Brenkacz L.
Polish Maritime Research
|
2018
|
tom 25
|
nr Special Issue S1
11

Odpad czy produkt

50%
Gluch J.
Ekoprofit
|
1997
|
nr 04
69-70
12

Analysis of fouling thermal resistance of feed-water heaters in steam power plants

45%
Butrymowicz D., Gluch J., Hajduk T., Trela M., Gardzilewicz A.
Polish Maritime Research
|
2009
|
nr Special Issue
In this paper a problem is discussed of thermal degradation of shell-and-tube recuperative feed-water heaters due to heat transfer surface fouling. Application (to an example steam cycle of power plant) of DIAGAR software system intended for the analysing of impact of degradation of a particular heat exchanger on whole recuperative system performance, is presented. On the basis of the systematically performed simulative calculations it was concluded that the degradation of feed-water heaters of the lowest extraction pressure results in an additional load imposed on the heaters of higher extraction pressures, moreover it was estimated that the degradation of the heaters due to presence of sediments of the thermal resistance reaching 5*10-4 m2*K/W, has resulted in the drop of turbine set efficiency by about 0.3%. Such drop depends on a given configuration of degree of degradation of particular feed-water heaters applied in a considered turbine set
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