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Tytuł:
Study of the effect of geometrical parameters of the LNG storage tanks on the process of evaporation of liquefied natural gas
Autorzy:
Liszka, K.
Łaciak, M.
Oliinyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/299096.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
liquefied natural gas
LNG
gas storage
storage tanks
vaporization
Opis:
Storage of liquefied natural gas (LNG) is one of the most important processes taking place during liquefaction which is also significant for the regasification and receiving terminals operation. The task of the tanks lies not only in the safe storage of gas, but also in preventing its evaporation related, among others, to the heat transfer through the walls and roof of the tank. Even a small quantity of heat flowing to the LNG increases its internal energy, conseąuently leading to the evaporation of a certain quantity of LNG. Phase transitions of even small amounts of liquid may cause changes in the composition of both LNG and its density, which may contribute to the formation of stratification of liquefied gas. The geometric parameters of the storage tanks have a very large impact on the amount of heat penetrating the tank: with the increase of its size the surface area of heat transfer increases, too. The dependence of heat penetrating the tank, its geometrie dimensions and the effect of temperature on the stability of the stored LNG are discussed in this paper .
Źródło:
AGH Drilling, Oil, Gas; 2014, 31, 2; 355-365
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CO2 storing capacity in geologic formations in the Czech Republic
Autorzy:
Bujok, P.
Klempa, M.
Labus, K.
Porzer, M.
Panek, P.
Rado, R.
Gonzalez-Rodriguez, M.
Powiązania:
https://bibliotekanauki.pl/articles/299299.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
CO2 storage
CO2 storage in geologic formations in the Czech Republic
boreholes for CO2 storage
modelling of CO2 storage
laboratory methods for CO2 storage
Opis:
The CO2 emission is a significant environmental problem threatening the sustained development of mankind. One of the possible ways of limiting the emission is the disposal of carbon dioxide in geologic formations.A pilot project of CO2 storage in geologic formations in the Czech Republic (REPP-CO2) is presented in this paper. The project is part of the Norwegian Fund and the research consortium (headed by the Czech Republic Geologic Office), with VSB-TU Ostrava as a participant. The VSB-TU Ostravais represented by the Faculty of Geology and Mining (HGF) and the Faculty of Metallurgy and Materials Science (FMMI) in the consortium.The research activity of the consortium mainly focuses on the development and improvement of selected laboratory methods, modelling and simulation, which are basic for the evaluation of safety of CO2 storing in geologic forma-tions. Thise paper presents the research conducted by the Faculty of Geology and Mining (HGF) VSB-TU Ostrava within the project.
Źródło:
AGH Drilling, Oil, Gas; 2015, 32, 4; 683-692
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new approach in skin effect and storativity estimation from pumping test data with low pumping rates
Autorzy:
Nedved, J.
Powiązania:
https://bibliotekanauki.pl/articles/184529.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
clogging
storage
aquifer
Opis:
Pumping test are supposed to be one of the best ways of determining hydraulic parameters of examined aquifer. However, there are many other effects which control measured drawdown in a wellbore. One of the major effects is well clogging and well storage. Well clogging (also called skin effect (van Everdingen 1953)) causes additional drawdown in the well and well storage (Papadopulos & Cooper 1967) causes distortion of data in the first part of pumping test. The author shows that both these effects can be estimated from measured drawdown when two special approaches are used – first, the drawdown must be measured at very short intervals (0.5–1.0 second), and second, the pumping rates must be rather low, so the examined aquifer is not stressed enough (the drawdown in the aquifer is very small) and the skin effect/well storage influence is more significant in this case. This approach also eneables the interpreter to estimate more exact storativity coefficient, because evaluation of skin effect leads to better wellbore screen hydraulic losses estimation. Hydraulic losses caused by wellbore skin leads to the shift of Jacob’s line (Cooper & Jacob 1946) which is connected with storativity misinterpretation. A formula for eliminating this problem is also presented. Using this formula can help to estimate storativity coefficient by using measured data from pumped well. Drawdown measured in pumped well is rarely used for storativity interpretation precisely because of wellbore clogging. The formula partly eliminates that problem. In the end, application of presented approach is shown on several pumping test conducted in very permeable sand – gravel quaternary sediments of the Jizera River and the Elbe River. The pumping tests are first interpreted by casual methods – Theis (1935) and/or Moench (1997) – and then the new presented method is used. It is shown that closer to real values of storativity are gained when the newly derived formula is taken into account.
Źródło:
Geology, Geophysics and Environment; 2016, 42, 1; 104
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Safety technical problems associated with the storage of liquefied natural gas (LNG)
Autorzy:
Oliinyk, A.
Łaciak, M.
Powiązania:
https://bibliotekanauki.pl/articles/298850.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
LNG
storage problems
Opis:
Liquefied natural gas (LNG) due to its extremely favorable properties is considered to be one of the most convenient sources of energy, both the transport, storage and distribution. However, these same properties, and factors which represent the LNG as convenient, such as: a very low temperature (-162 degrees of Celsius), a very large increase in the volume of the evaporation (about 600 times) and also create a potential threats The greatest potential threats are in areas where LNG is a very large quantities for a long period of time. The facts presented above show that there is potentially the greatest threat to the storage of LNG. Leaks, clouds LNG vapor, explosions, low temperature, and "rollover" are the most dangerous potential hazards that occur during storage of LNG. Each of these risks can be avoided. This is achieved by the use of appropriate materials for tanks and equipment, as well as the proper and adequate execution of engineering design at each stage of technology. Proper selection of vessel design and materials, and the use of appropriate methods of combining them decide on a safe and long life tanks.
Źródło:
AGH Drilling, Oil, Gas; 2013, 30, 1; 181-189
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of underground gas storage in the EU gas market
Autorzy:
Janusz, P.
Kaliski, M.
Szurlej, A.
Powiązania:
https://bibliotekanauki.pl/articles/299269.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
natural gas
underground gas storage
Opis:
One of the main intentions of the European Union is to create common and liberalizated market of natural gas in Europe. Actions has been taken in this area for a few years, however achived effects do not reach the aims that were assumed at the beginning. The quantity of natural gas consumption in the European Union during last years is characterized by a declining tendency (decreasing usage of natural gas in power sector, higher temperature during autumn and winter season also infulences on limiting of natural gas demand), in 2012 the consumption was forming on the level of 444 billion m3, and for example in 2008 it amounted to 497 billion m3. The regulations concerning the natural gas market embrace all of the elements which have an impact on building consolidated and liberalizated market, it means: transfer, distribution and LNG, storage. The authors of this article wants to draw one's attention to the particular role of underground gas storages and depict change of the tasks, which they have to fulfill on the liberalizating market of natural gas in Europe (ie. Price arbitration). The purpose of this article is to presentthe current situation on the market of storage services, which means available storage capacities, the level of their usage and plans regarding extension and constructing of new capacities.
Źródło:
AGH Drilling, Oil, Gas; 2014, 31, 1; 11-23
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magazyny energii niezbędnym elementem transformacji energetycznej
Energy storage – the crucial element of energy transition
Autorzy:
Adamska, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/2069835.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
magazyny energii
fleksument
usługi elastycznościowe
zasobniki bateryjne
energy storage
flexumer
flexibility services
battery storage
Opis:
Zgodnie z polskim prawodawstwem magazyny energii stanowią pełnoprawny element rynku elektroenergetycznego. Obowiązujące regulacje są jednak niewystarczające i nie przekładają się na modele biznesowe będące podstawą do inwestycji w magazyny w różnych segmentach rynku: prosumenckim, przemysłowym i komercyjnym oraz wielkoskalowym. W artykule przedstawiono obecne uregulowania europejskie i polskie dotyczące magazynów energii oraz usługi, jakie magazyny mogą świadczyć na potrzeby systemu elektroenergetycznego. Wskazano również na potrzebę porozumienia sektorowego na rzecz rozwoju magazynowania energii w Polsce w celu stworzenia warunków do rozwoju krajowej branży gospodarczej.
According to Polish legislation, energy storage facilities are fully-fledged participants in the electricity market. The regulations in force are, however, insufficient and do not translate into the business models that would foster investments in storage in various segments of the market – prosumer, industrial and commercial as well as large-scale. This article presents the current European and Polish regulations concerning the energy storage facilities and the services that such storage may provide to the electric power system. Moreover, it points out the need for a sectoral agreement to be concluded on the development of energy storage in Poland with the aim of establishing conditions for the growth of this domestic industrial sector.
Źródło:
Energetyka Rozproszona; 2022, 7; 55--61
2720-0973
Pojawia się w:
Energetyka Rozproszona
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of providing details to the model of a geological structure on the assessment of CO2 storage capacity
Autorzy:
Luboń, K. T.
Powiązania:
https://bibliotekanauki.pl/articles/184673.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
CO2 storage coefficient
CO2 storage efficiency factor
CO2 capacity
CCS
Opis:
Massive emissions of CO2 into the atmosphere are the most direct reason causing global warming and climate change, so more and more countries are starting to focus on carbon abatement technologies. In recent years, the method GCS (Geological Carbon Storage), injecting the CO2 in a supercritical state underground for storage, is considered the most effective way to reduce greenhouse gas emissions. Saline aquifers are given special attention because of its huge amount of storage and, therefore, a deep saline aquifer is the best choice for the storage of CO2. Exemplified by the well-explored Konary structure in the Polish Lowlands, results of assessments of CO2 storage capacity are compared for three cases: (1) a simplified formula based on averaged geological and reservoir parameters and (2) a model of the structure based on averaged geological and reservoir parameters (homogeneous model) and (3) a model of the structure with more detailed geological data (including those on clay interbeds in the sandstone series of the reservoir horizon – heterogeneous model). This allows the estimation of how providing of details of geological and reservoir data, introduced into the model, can affect the ability of CO2 migration within a reservoir horizon intended for CO2 storage, and, consequently, also obtain a more accurate assessment of the capacity that the structure is capable of attaining.
Źródło:
Geology, Geophysics and Environment; 2016, 42, 4; 449-458
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of AHP method to assess the possibilities of using of geological structures located in the aquifers as underground storage sites
Autorzy:
Lewandowska-Śmierzchalska, J.
Uliasz-Misiak, B.
Powiązania:
https://bibliotekanauki.pl/articles/298942.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
AHP method
decision-making system
aquifers
carbon storage
natural gas storage
wastes injection
Opis:
Decision-making problem with assessing of the suitability of geological structures located in aquifers in terms of their use for carbon storage, natural gas storage or waste injection is mainly connected with the necessity of taking into consideration a large number of criteria and analyze a lot of parameters. It also connected with making many independent decisions concerning geological, environmental, social, political, technical or legal issues. This article shows the possibility of using the AHP method, ie. multi-criteria hierarchical methods to analysis of decision problems in assessment the potential of aquifers. AHP method allows to take reasonable decision. The article was divided into three parts. The first one includes a characteristics of geological structures located in aquifers, special attention was paid to the criteria describing these structures. In the second part, the basis for decision-making system based on the method of AHP, which was used to carry out the hierarchical scoping assessment of potential structures. Validation of decision-making system was realized on selected geological structures located on the Polish Lowlands. An assessment of the possibilities to use the two anticline in the Mesozoic aquifers was made. As a result, received the criteria ranking, rankings of decision variants to all criteria and global ranking of variants. Based on the results obtained can be determine which decision represents a priority way of use structure.
Źródło:
AGH Drilling, Oil, Gas; 2017, 34, 2; 361-374
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A review of currently available LNG facilities and means of transport used for supplying terminals in natural gas with a projection of LNG prices in the USA
Autorzy:
Metelska, K.
Cieślik, T.
Powiązania:
https://bibliotekanauki.pl/articles/298697.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
LNG
LNG transport
LNG storage
Opis:
LNG terminals allow for constant availability of fuel gas in insular countries (Japan) and in countries which do not have the option of transporting gas via inland pipelines due to their geopolitical location (South Korea). In many cases, possessing an LNG (liquefied natural gas) terminal increases energy independence, which translates first and foremost into avoiding energy blackmail (Lithuania). This paper presents currently existing LNG terminals together with an overview of the most widely used technologies for gas liquefaction, storage and long-distance transporting by LNG carriers. A comparison of natural gas liquefaction plants and LNG terminals with respect to their location, age and capacity is also given. In the final part of the paper we analyse LNG carriers in relation to age, capacity and shipowner. On the basis of data collected in the last 12 years, such as: price of LNG exported from USA, prices of imported and exported natural gas, consumption of gas, we have established the price of imported LNG using linear regression and power functions. In order to determine the price of LNG we have constructed mathematical models by means of the STATISTICA program. Our aim was to find the most accurate model. Three basic ex post methods have been used to compare regression models: ME (mean error), RMSE (root mean squared error), MAPE (mean absolute percentage error).
Źródło:
AGH Drilling, Oil, Gas; 2016, 33, 1; 49-67
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How to localize an Underground Gas Storage (UGS) in a salt structure of the Fore-Sudetic Monocline in light of its geomechanical properties
Autorzy:
Zeljaś, D.
Powiązania:
https://bibliotekanauki.pl/articles/298757.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
underground storage
natural gas storage caverns
saline rock mass stability
geomechanical properties of salt rock
Opis:
The analysis of formal and legal regulations revealed that Underground Gas Storages are a favorable option in Polish conditions. The author presented a possible localization of an UGS in a salt structure of the Fore-Sudetic Monocline, indicating the advantages of the area and problems to be solved. Attention was paid to the UGS stability and complexity of this issue. The presented strength indices and rheological parameters of salt were based on laboratory experiments. In the future they can be used at the stage of designing and performing geomechanical analyses.
Źródło:
AGH Drilling, Oil, Gas; 2016, 33, 4; 699-711
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An optimization model for managing compressors in salt cavern gas storage
Autorzy:
Stopa, J.
Mrzygłód, R.
Powiązania:
https://bibliotekanauki.pl/articles/298862.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
salt cavern
gas storage
compressors
optimization
Opis:
The article presents issues related to technical and economic optimization of filling underground gas storage in salt cavern (CUGS) on the example of Mogilno. Operation practice suggests that the first step is to inject the caverns with a high convergence, then with smaller and at the end caverns with the smallest convergence. In the withdraw process, the situation is reversed. On the other hand, the gas injection into the deepest caverns requires more compressor power. Optimization that takes into account only the speed of storage caverns convergence is not ideal. While injecting gas into storage caverns, compressors typically use about 1–3% of the transported gas, depending on the management of compressors operation. Taking into account the amount of gas supplied to the CUGS Mogilno, the cost of fuel gas that is used can be significant. In the liberalized gas market an underground gas storage operator will have to account carefully and buy fuel gas at market prices. These facts raise an important question: how to manage the operation, in a free gas market in the most efficient way which affects the profitability service storage provision in underground gas storage in salt caverns. This paper presents the optimization model, developed by the authors, that minimizes the consumption of fuel gas, while preventing overdependence loss of underground salt caverns volume, during the gas injecting process into storage caverns.
Źródło:
AGH Drilling, Oil, Gas; 2013, 30, 3; 385-403
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Resource storage management model for ensuring quality of service in the cloud archive systems
Autorzy:
Kapanowski, M.
Słota, R.
Kitowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/305517.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
storage
backup
cloud
management
QoS
SLA
Opis:
Nowadays, service providers offer a lot of IT services in the public or private cloud. Clients can buy various kinds of services, such as SaaS, PaaS, etc. Recently, Backup as a Service (BaaS), a variety of SaaS, was introduced there. At the moment, there are several different BaaS’s available to archive data in the cloud, but they provide only a basic level of service quality. In this paper, we propose a model which ensures QoS for BaaS and some methods for management of storage resources aimed at achieving the required SLA.This model introduces a set of parameters responsible for an SLA level which can be offered at the basic or higher level of quality. The storage systems (typically HSM), which are distributed between several Data Centers, are built based on disk arrays, VTL’s, and tape libraries. The RSMM model does not assume bandwidth reservation or control, but rather is focused on management of storage resources.
Źródło:
Computer Science; 2014, 15 (1); 3-18
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A client-based encryption model for secure data storing in publicly available storage systems
Autorzy:
Retinger, Marek
Powiązania:
https://bibliotekanauki.pl/articles/305441.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
data storage
data protection
encryption
security
Opis:
This document presents a conceptual model of a system for protecting thedata stored in publicly available data storage systems. The main idea was toapply encryption on both the client and server sides that would consequentlyhave a significant impact on data security. The compatibility with existingsystems allows us to deploy the solution fast and at a low cost. The testsconducted on a simplified implementation have confirmed the solution’s validity,and they have shown some possible performance issues as compared to theclassical system (which can be easily bypassed).
Źródło:
Computer Science; 2019, 20 (2); 179-194
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A toolkit for storage QoS provisioning for data-intensive applications
Autorzy:
Słota, R.
Król, D.
Skałkowski, K.
Orzechowski, M.
Nikolow, D.
Kryza, B.
Wrzeszcz, M.
Kitowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/305571.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
data-intensive application
storage management
QoS
grid
Opis:
This paper describes a programming toolkit developed in the PL-Grid project, named QStorMan, which supports storage QoS provisioning for data-intensive applications in distributed environments. QStorMan exploits knowledgeoriented methods for matching storage resources to non-functional requirements, which are defined for a data-intensive application. In order to support various usage scenarios, QStorMan provides two interfaces, such as programming libraries or a web portal. The interfaces allow to define the requirements either directly in an application source code or by using an intuitive graphical interface. The first way provides finer granularity, e.g., each portion of data processed by an application can define a different set of requirements. The second method is aimed at legacy applications support, which source code can not be modified. The toolkit has been evaluated using synthetic benchmarks and the production infrastructure of PL-Grid, in particular its storage infrastructure, which utilizes the Lustre file system.
Źródło:
Computer Science; 2012, 13 (1); 63-73
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using Redis supported by NVRAM in HPC applications
Autorzy:
Malinowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/305650.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
high performance computing
storage systems
NoSQL
NVRAM
Opis:
Nowadays, the efficiency of a storage systems is a bottleneck in many moern HPC clusters. High performance in traditional approach – processing using files – is often difficult to obtain because of model complexity and its read/write patterns. Alternative approach is applying a key-value database, which usually has low latency and scales well. On the other hand, many key-value stores suffer from limitation of memory capacity and vulnerability to serious faiures, which is caused by processing in RAM. Moreover, some research suggests, that scientific data models are not applicable to storage structures of key-value databases. In this paper, the author proposes resolving mentioned issues by replacing RAM with NVRAM. Practical example is based on Redis NoSQL. The article contains also a three domain specific APIs, that show the idea bhind transformation from HPC data model to Redis structures, as well as two micro-benchmarks results.
Źródło:
Computer Science; 2017, 18 (3); 287-300
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
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