Temat: hydraulic efficiency - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: CFD methods as a modern tool in optimisation of hydrodynamic conditions in magma crystallizers
Autorzy:: Synowiec, P.
Wójcik, J.
Bigda, J.
Powiązania:: https://bibliotekanauki.pl/articles/1955724.pdf
Data publikacji:: 2003
Wydawca:: Politechnika Gdańska
Tematy:: CFD
crystallization
hydraulic efficiency
Opis:: Selected parameters concerning the optimisation of hydrodynamics in magma crystallizers are discussed. At this stage, results of CFD (Computational Fluid Dynamics) simulations are shown, focused on the effect of the geometrical configuration of a crystallizer on energy dissipation rate, axial velocity field and general hydraulic efficiency. The influence of the shape of the apparatus' bottom, diameter of the stirrer, its location and presence of the draft tube on, respectively: (i) unit power input distribution, (ii) the average mixing power, and (iii) pumping capacity have been takeninto consideration. The results obtained from simulations have been compared with experiments and literature data.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2003, 7, 3; 459-466
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The influence of borehole design on the production and efficiency parameters of wells intaking Quaternary waters in the south of Łódź
Autorzy:: Macuda, J.
Styrkowiec, E.
Powiązania:: https://bibliotekanauki.pl/articles/298685.pdf
Data publikacji:: 2017
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: wellbore
wellbore design
technical condition of wellbore
hydraulic efficiency
technical diagnostics
Opis:: Quaternary wellbores are very liable to rapid drops of hydraulic efficiency mainly caused by clogging processes and the corrosion of the wellbore structure. The presence of such processes and their intensity largely depend on the hydrogeochemical conditions of the intaken aquifer and also the production rate and extraction method of a given wellbore. Among the major factors slowing down the hydraulic intensity are a correctly designed well, especially the properly selected type and design of the filter. A well designed wellbore filter should have low hydraulic resistance of the inflowing water and be resistant to clogging and corrosion in the given hydrochemical conditions. This allows for long and failure-free extraction of large high-production wells. The results of analyses of the effect of intake wellbore design on its hydraulic efficiency are presented in the paper. The intake wells producing Quaternary waters for waterworks in the southern part of Łódź were analyzed.
Źródło:: AGH Drilling, Oil, Gas; 2017, 34, 4; 895-906
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The technical and technological aspects of commissioning a new intake wells
Autorzy:: Macuda, J.
Styrkowiec, E.
Powiązania:: https://bibliotekanauki.pl/articles/298953.pdf
Data publikacji:: 2016
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: drilled well
technical condition of well
hydraulic efficiency
diagnostics of wells
quality of drilling
Opis:: Correctly performed intake wells are a warranty of long and efficient exploitation of the object. A number of important factors are involved, starting from the correct technology of drilling to proper supervision of the investor and control of realization of particular stages of work. These factors are typical of each stage of the investment process, from the stage of determining project requirements, quality of drilling to commissioning of the well. For this reason it is extremely important for the investor to establish the requirements and technical criteria which will be presented to the authors of the geological project and potential performer of the well. Geological works can be successfully verified with available diagnostic techniques, thanks to which the quality of performance can be recognized, make the contractor remove construction failures and improve the efficiency of hydraulic well before final commissioning. The necessity of performing such an analyses should be included in the budget of the planned well.Properly defined technical condition of the drilled well and evaluation of its hydraulic efficiency, being a basis for commissioning, allows the designers to select rational parameters of production and elongate a well’s life.
Źródło:: AGH Drilling, Oil, Gas; 2016, 33, 3; 641-649
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Investigation of gas gathering pipelines operation efficiency and selection of improvement methods
Autorzy:: Volovetskyi, V. B.
Doroshenko, Ya. V.
Kogut, G. M.
Dzhus, A. P.
Rybitskyi, I. V.
Doroshenko, J. I.
Shchyrba, O. M.
Powiązania:: https://bibliotekanauki.pl/articles/2055762.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: gas
gas gathering pipeline
hydraulic efficiency
liquid contamination
foam
inner cavity cleaning
gaz
rurociąg
sprawność hydrauliczna
piana
Opis:: Purpose: The article implies theoretical and experimental studies of the liquid pollution accumulations impact on the efficiency of gathering gas pipelines operation at the Yuliivskyi oil and gas condensate production facility (OGCPF). Research of efficiency of gas pipelines cleaning by various methods. Design/methodology/approach: The research methodology consists of determining the hydraulic efficiency of gathering gas pipelines before and after cleaning of their internal cavity by different methods and comparing the obtained results, which allows to objectively evaluate the efficiency of any cleaning method. CFD simulation of gas-dynamic processes in low sections of gas pipelines with liquid contaminants. Findings: Experimental studies of cleaning efficiency in the inner cavity of the gas gathering pipelines of the Yuliivskyi OGCPF by various methods, including: supply of surfactant solution, creating a high-speed gas flow, use of foam pistons were performed. It was established that cleaning the inner cavity of gas gathering pipelines by supplying a surfactant solution leads to an increase in the coefficient of hydraulic efficiency by 2%-4.5%, creating a high-speed gas flow by 4%-7%, and under certain conditions by 8%-10 % and more. However, for two gas pipelines the use of foam pistons allowed to increase the coefficient of hydraulic efficiency from 5.7 % to 10.5 % with a multiplicity of foam from 50 to 90. be recommended for other deposits.The results of CFD simulation showed that the accumulation of liquid contaminants in the lowered sections of gas pipelines affects gas-dynamic processes and leads to pressure losses above the values provided by the technological regime. With the increase in liquid contaminants volume the pressure losses occur. Moreover, with a small amount of contamination (up to 0.006 m3), liquid contaminants do not have a significant effect on pressure loss. If the contaminants volume in the lowered section of the pipeline is greater than the specified value, the pressure loss increases by parabolic dependence. The increase in mass flow leads to an increase in the value of pressure loss at the site of liquid contamination. Moreover, the greater the mass flow, the greater the impact of its changes on the pressure loss. The CFD simulation performed made it possible not only to determine the patterns of pressure loss in places of liquid contaminants accumulation in the inner cavity of gas pipelines, but also to understand the gas-dynamic processes in such places, which is an unconditional advantage of this method over experimental. Research limitations/implications: The obtained simulation results showed that the increase in the volume of liquid contaminants in the inner cavity of gas gathering pipelines leads to an increase in pressure losses above the value provided by the technological regime. To achieve maximum cleaning of gas gathering pipelines, it is necessary to develop a new method that will combine the considered. Practical implications: The performed experimental results make it possible to take a more thorough approach to cleaning the inner cavity of gas gathering pipelines and to forecast in advance to what extent the hydraulic efficiency of gas gathering pipelines can be increased. Originality/value: The obtained results of CFD simulation of gas-dynamic processes in lowered sections of gas pipelines with liquid contaminants, experimental studies of the effectiveness of various methods of cleaning the inner cavity of gas gathering pipelines has original value.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2021, 107, 2; 59--74
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Experimental effectiveness studies of the technology for cleaning the inner cavity of gas gathering pipelines
Autorzy:: Volovetskyi, V. B.
Doroshenko, Ya. V.
Tarayevs'kyy, O. S.
Shchyrba, O. M.
Doroshenko, J. I.
Stakhmych, Yu. S.
Powiązania:: https://bibliotekanauki.pl/articles/1818794.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: gas
foam
gas gathering pipeline
hydraulic efficiency
cleaning the inner cavity of pipelines
gaz
piana
rurociąg
sprawność hydrauliczna
Opis:: Purpose: The purposes of the article are to determine the hydraulic efficiency of two gas gathering pipelines of the Yuliivskyi oil and gas condensate production facility (OGCPF) and develop a set of measures to increase it; to experimentally determine the efficiency of using foams to increase the hydraulic characteristics of the gas gathering pipelines in the Yuliivskyi OGCPF; to develop a set of measures that will help to improve the hydraulic characteristics of gas gathering pipelines. Design/methodology/approach: The research methodology consists in determining the hydraulic efficiency of gas gathering pipelines before and after cleaning their inner cavity with foams with different expansion ratios and comparing the obtained values, which allows to objectively assess the efficiency of this cleaning method. The studies were performed within the framework of research and development work by the specialists of the Ukrainian Scientific Research Institute of Natural Gases. Findings: The pilot testing was carried out to determine the efficiency of cleaning the inner cavity of gas gathering pipelines with foams with different expansion ratios. It showed positive results. It was determined that cleaning the inner cavity of gas gathering pipelines with foams with the expansion ratio from 80 to 90 led to an increase in the hydraulic efficiency coefficient by 10.5%, and with foams with the expansion ratio from 50 to 60 - by 5.7%. The measures taken to clean the inner cavity of gas gathering pipelines from liquid contaminations have proven their efficiency and can be recommended for other fields. Research limitations/implications: The obtained results show that it is reasonable to conduct the experimental studies on the efficiency of cleaning the inner cavity of gas gathering pipelines with the foams with higher expansion ratios. To achieve the maximum quality of cleaning the gas gathering pipelines, it is necessary to develop a new method that will combine the use of foam and gel piston.Practical implications: The performed experimental studies help to take a more reasonable approach to cleaning the inner cavity of gas gathering pipelines with foams and to predict in advance the effect of the foam expansion ratio on the hydraulic efficiency of gas gathering pipelines. Originality/value: The experimental studies on the effect of foam expansion ratios on the hydraulic efficiency of gas gathering pipelines are original.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2021, 105, 2; 61--77
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Developing a set of measures to provide maximum hydraulic efficiency of gas gathering pipelines
Autorzy:: Volovetskyi, V. B.
Uhrynovskyi, A. V.
Doroshenko, Ya. V.
Shchyrba, O. M.
Stakhmych, Yu. S.
Powiązania:: https://bibliotekanauki.pl/articles/368779.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: well
gas
gas gathering pipeline
hydraulic efficiency
cleaning the inner cavity of pipelines
studnia
gaz
rurociąg
sprawność hydrauliczna
Opis:: Purpose: The purposes of this article are to study the effective ways of increasing the hydraulic efficiency of gas gathering pipelines of the Yuliivskyi oil and gas condensate production facility (OGCPF); to calculate the operation efficiency of gas gathering pipelines of the Yuliivskyi OGCPF and develop a set of measures to monitor their condition and improve their hydraulic characteristics; to investigate the technology of cleaning the inner cavity of flowlines of gas-condensate wells with foam, to perform the feasibility study on the prospects of its application in practice. Design/methodology/approach: The technology of cleaning the inner cavity of flowlines of gas-condensate wells with foam was investigated to objectively evaluate its application and determine the effectiveness of this measure. The research was carried out within the framework of research and development work by the specialists of the Ukrainian Scientific Research Institute of Natural Gases. Findings: The results of production studies showed that due to cleaning the flowlines of gas-condensate wells (No.85 and No.60) from the accumulation of liquid, the coefficients of their hydraulic efficiency increased by 12% and 7%, respectively. Measures taken to clean the inner cavity of the flowlines from liquid have proven their efficiency and can be recommended for other flowlines of wells at other production fields. Research limitations/implications: Based on the characteristics of gas gathering pipelines, it is reasonable to conduct experimental studies on the use of the proposed technology of cleaning the inner cavity with foam in the case of increasing its multiplicity. Practical implications: Using the wells of the Yuliivske oil and gas condensate field as case studies, the operating parameters were measured and the pressure losses along the length of the flowlines were calculated. According to the results of calculations at two wells (No.85 and No.60), a significant excess of the actual value of the flow friction characteristic over the theoretical value was established. To reduce excessive pressure losses due to the presence of liquid and improve the hydraulic characteristics of the wells, their inner cavities were cleaned using foam with the expansion ratio from 40 to 100. Originality/value: It is important to note that the advantages of foam piston include: ease of use, no occurrence of hydraulic shocks and preventing stuck during movement in the gas pipeline, application in both straight and inclined sections, no wear of the elements of the cleaning equipment, a rather efficient cleaning of gas pipelines.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2020, 101, 1; 27-41
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Analiza hydrauliczna zjawisk wywołujących zmniejszenie przepływności rurociągów
Hydraulic analysis of phenomena reducing pipeline flowability
Autorzy:: Kotowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/236648.pdf
Data publikacji:: 2010
Wydawca:: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:: rurociąg wodny
korozyjność wody
inkrustacja
chropowatość rurociągu
opór przepływu
sprawność hydrauliczna
water pipelines
water corrosivity
incrustation
pipelines roughness
flow resistance
hydraulic efficiency
Opis:: Rurociągi wodne w czasie eksploatacji ulegają korozji i inkrustacji, będących skutkiem niestabilności chemicznej wody wodociągowej. Wykazano, że badania korozyjności wody wodociągowej mogą być pomocne do wstępnej oceny wzrostu oporności hydraulicznej rurociągów, pod warunkiem braku istotnych zmian jakości wody w badanym cza-sie. Najistotniejszy wpływ na zmniejszenie przepływności rurociągów ma już niewielki wzrost chropowatości ścian przewodów, w porównaniu do rur hydraulicznie gładkich. Jednak przy dużej chropowatości ścian rurociągu spadek jego przepływności wynika już głównie z fizycznego zmniejszenia przekroju rurociągu, a tylko w niewielkiej części z oporów ruchu. Na drodze analitycznej i doświadczalnej dowiedziono, że uzależnienie wartości współczynnika szorstkości (n) we wzorze Manninga od liczby Reynoldsa i chropowatości (k) czyni tę metodę wymiarowania rurociągów równie dokładną, jak metoda oparta na wzorach Darcy-Weisbacha i Colebrooka-White'a.
While in service, water pipelines undergo corrosion and develop incrustations, which is attributable to the chemical instability of tap water. This study reports the following findings. Tap water corrosivity tests can be regarded as a useful tool for the preliminary estimation of the increase in pipeline roughness, provided that no significant changes in water quality were observed at the time of the research. Compared to smooth pipes (in hydraulic terms), even a slight increase in the wall roughness of the pipes becomes a substantial contributing factor in the decrease of pipeline flowability. At a high wall roughness, the decrease in the flowability of the pipeline is attributable primarily to the physical reduction in the pipe cross-section; the contribution of flow resistance is less important. The author has demonstrated, both by analysis and by experiments, that relating the value of the roughness coefficient (n) in Manning's equation to Reynolds number and roughness (k) renders this method of pipeline dimensioning as accurate as the method based on Darcy-Weisbach and Colebrook-White equations.
Źródło:: Ochrona Środowiska; 2010, 32, 1; 27-32
1230-6169
Pojawia się w:: Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Sprawność hydrostatycznych układów napędowych o złożonej strukturze
Efficiency of hydrostatic drive systems with a complicated structure
Autorzy:: Zastempowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/2071568.pdf
Data publikacji:: 2011
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: napęd hydrostatyczny
sprawność układów hydrostatycznych
struktura ukłdów hydrostatycznych
hydrostatic drive
hydraulic system efficiency
hydrostatic system structure
Opis:: W artykule przedstawiono ocenę sprawności dowolnie złożonych układów hydraulicznych, w których cieczą roboczą jest woda. Najkorzystniejszym napędem płynowym dla przemysłu spożywczego jest napęd hydrostatyczny, w którym cieczą roboczą jest woda. Czysta woda jest idealnym medium spełniającym warunki higieniczno-sanitarne. Wodne układy hydrostatyczne mają często złożoną strukturę z uwagi na fakt, że z jednej pompy zasilanych jest wiele odbiorników energii (silników).
A procedure of fast assessment of hydrostatic system efficiency for a complicated system structure with water as drive fluid is presented in the paper. The best drive fluid for food industry is water as working fluid. Clean water is ideal vehicle fulfilling hygienic and health conditions. However, water systems have often a very complicated structure caused by the situation that one pump usually supplies many hydrostatic receivers.
Źródło:: Inżynieria i Aparatura Chemiczna; 2011, 3; 87-88
0368-0827
Pojawia się w:: Inżynieria i Aparatura Chemiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Simulation and experimental research of hydraulic losses of an energy converting flow machine with rotating piston
Autorzy:: Nozdrzykowski, K.
Komorowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/135380.pdf
Data publikacji:: 2017
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: energy-converting machine
rotating pistons
imulation of hydraulic losses volumetric efficiency
comparative analysis
correlation and integral calculi
Opis:: This article describes the construction and principles of operation of a prototype energy-converting machine – a flow machine with pistons rotating in toroidal spaces. A comparative analysis of the results of simulation and experimental tests of fluid flow resistance in the presented prototype machine has been performed with the use of correlation and integral calculi. The article also presents a comparative analysis of the volumetric efficiency of the examined pump and of a Vogelsang pump with similar design and size. The present state of the research makes it possible draw conclusions about the high exploitation value of the proposed pump construction. For this displacement pump, performance increases along with rotational speed. However, it is different from other pumps by virtue of is simple and compact construction as well as greater capacity in relation to its size.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 49 (121); 54-58
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The exergetic analysis for predicting of energy efficiency of the hydraulic drive systems
Prognozirovanie ehnergoeffectivnosti sistemy gidroprivoda na osnove ehksergeticheskogo analiza
Autorzy:: Yakhno, O.
Gubarev, A.
Ganpantsurova, O.
Murashhenko, A.
Powiązania:: https://bibliotekanauki.pl/articles/77647.pdf
Data publikacji:: 2014
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: hydraulic drive
hydraulic calculation
temperature
viscosity
energy efficiency
Źródło:: Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 5
1730-8658
Pojawia się w:: Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:: Biblioteka Nauki

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