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    Wyświetlanie 1-13 z 13
    Tytuł:
    Life cycle assessment analysis of supercritical coal power units
    Autorzy:
    Ziębik, A.
    Hoinka, K.
    Liszka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/240919.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CCS
    dopalanie
    LCA
    ocena ekologiczna
    spalanie tlenu
    zużycie energii
    cumulative energy consumption
    ecological analysis
    oxy-combustion
    post-combustion
    Opis:
    This paper presents the Life Cycle Assessment (LCA) analysis concerning the selected options of supercritical coal power units. The investigation covers a pulverized power unit without a CCS (Carbon Capture and Storage) installation, a pulverized unit with a "post-combustion" installation (MEA type) and a pulverized power unit working in the "oxy-combustion" mode. For each variant the net electric power amounts to 600 MW. The energy component of the LCA analysis has been determined. It describes the depletion of non-renewable natural resources. The energy component is determined by the coefficient of cumulative energy consumption in the life cycle. For the calculation of the ecological component of the LCA analysis the cumulative CO2 emission has been applied. At present it is the basic emission factor for the LCA analysis of power plants. The work also presents the sensitivity analysis of calculated energy and ecological factors.
    Źródło:
    Archives of Thermodynamics; 2010, 31, 3; 115-130
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selected aspects of nitrogen metabolism and quality of field-grown lettuce (Lactuca sativa L.) depending on the diversified fertilization with Iodine and selenium compounds
    Wybrane aspekty metabolizmu azotu oraz jakość sałaty (Lactuca sativa L.) gruntowej w zależności od zróżnicowanego nawożenia związkami jodu i selenu
    Autorzy:
    Smoleń, S.
    Skoczylas, Ł.
    Rakoczy, R.
    Ledwożyw-Smoleń, I.
    Liszka-Skoczylas, M.
    Kopeć, A.
    Piątkowska, E.
    Bieżanowska-Kopeć, R.
    Pysz, M.
    Koronowicz, A.
    Kapusta-Duch, J.
    Sady, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/11543020.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Opis:
    Iodine and selenium together fulfill important functional roles in organisms of humans and animals. Conducting simultaneous biofortification (enrichment) of plants with these elements is justified as combined endemic deficiency of I and Se (hiddenhun-ger) is often encountered. Relatively little is known about the interaction between I and Se in plants, not only with respect to their accumulative efficiency, but also its influence on mineral nutrition or biological quality of crop. The study (conducted in 2012–2014) in-cluded soil fertilization of lettuce cv. ‘Valeska’ with I and Se in the following combina-tions: control, KI, KIO3, Na2SeO4, Na2SeO3, KI + Na2SeO4, KIO3 + Na2SeO4, KI + Na2SeO3, KIO3 + Na2SeO3. Iodine and selenium were applied twice: before sowing and as a top-dressing (each of 2.5 kg I·ha-1 + 0.5 kg Se·ha-1) –a total dose of 5 kg I·ha-1and 1 kg Se·ha-1was used. Diversified weather conditions significantly modified the impact fertilization with I and Se had on tested aspects of nitrogen metabolism and biological quality of lettuce –except for the lettuce heads mass and the sucrose content. Based on the results concerning average lettuce weight as well as the level of sugars, phenolic com-pounds, phenylpropanoids, flavonols and antioxidizing activity it was concluded that the application of Na2SeO4alone or together with iodine acted as a stress factor for cultivated plants.
    Jod i selen razem pełnią ważne funkcje w organizmach ludzi i zwierząt. Prowadzenie równoczesnej biofortyfikacji (wzbogacenia) roślin w te pierwiastki jest więc uzasadnione –często spotyka się problemy łącznego endemicznego niedoboru (lub ukrytego głodu) I i Se w żywności. Stosunkowo niewiele wiadomo na temat interakcji pomiędzy I i Se w roślinach. Nie tylko w zakresie efektywności ich akumulacji, ale również wpływu I i Se na gospodarkę mineralną roślin czy jakość biologiczna plonu. Badania przeprowadzone w latach 2012–2014 obejmowały nawożenie doglebowe jodem i selenem sałaty odmiany ‘Valeska’ z uwzględnieniem następujących kombinacji: kontrola, KI, KIO3, Na2SeO4, Na2SeO3, KI + Na2SeO4, KIO3 + Na2SeO4, KI + Na2SeO3, KIO3 + Na2SeO3. Jod i selen były aplikowane dwukrotnie: przedsiewnie i w nawożeniu pogłównym (każde po 2,5 kg I·ha-1 + 0,5 kg Se·ha-1) –zastosowano całkowitą dawkę 5 kg I·ha-1i1 kg Se·ha-1. Z wyjątkiem masy główek sałaty oraz zawartości sacharozy stwierdzono, że skrajnie różny przebieg warunków klimatycznych w latach 2012–2014 w istotny sposób modyfikował wpływ nawożenia I i Se na gospodarkę mineralną azotem oraz jakość biologiczną sałaty. Nawożenie Na2SeO4, KI + Na2SeO4oraz KIO3 + Na2SeO4(ale nie nawożenie samym Na2SeO4) było czynnikiem stresowym, zmniejszało masę główek sałaty i zawartość w niej cukrów oraz równocześnie zwiększającym zawartość związków fenolowych, fenolopropanoidów i flawonoli oraz aktywność antyoksydacyjną.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2015, 14, 5; 159-175
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of new generation odorants applicability in the Polish natural gas distribution network
    Autorzy:
    Liszka, K.
    Łaciak, M.
    Olinyk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/298846.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    odorization
    sulfur-free odorant
    natural gas delivery
    gas treatment
    Opis:
    Odorization is the process which has crucial impact on the safety of the distribution and usage of natural gas. A very small amounts of odorant are added into naturally odorless fuel. The odorant has distinctive and well odor. Traditionally, used for decades, odorants are based on sulfur compounds. More recently in some countries sulfur-free compound is used as odorant. This article is an attempt to determine the applicability of sulfur-free odorant in natural gas distribution network in Poland. This includes the possibility of implementing a new odorant for the usage in the aspect of existing legislation in the area of odorization. The existing infrastructure used in the process of natural gas odorization has been analyzed and range of necessary adaptation actions has been indicated. The issue of smell diversity in comparison sulfur-free with traditionally used odorants has also been discussed. At the end, the ecological aspects of new odorant usage on a larger scale and re being taken under consideration.
    Źródło:
    AGH Drilling, Oil, Gas; 2014, 31, 1; 59-71
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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:
    Carbon Nanomaterials from Carbon Monoxide Using Nickel and Cobalt Catalysts
    Autorzy:
    Liszka, B.
    Krztoń, A.
    Pawlyta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1536422.pdf
    Data publikacji:
    2010-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.07.-b
    Opis:
    Two catalysts, nickel and cobalt, supported on MgO were used for carbon nanomaterials deposition by CO disproportionation. The syntheses were performed at 795 and 900 K in the hydrogen atmosphere. The resulting products were investigated using atomic force microscopy, scanning electron microscopy, and high-resolution transmission electron microscopy. Although in the literature carbon nanofibres are expected to form in the hydrogen presence, we obtained carbon nanotubes, which were multiwall and twisted with the outer diameter of 10-120 nm and the tube length up to 10 μm.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 3; 471-474
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pressure regulating station at actual conditions
    Autorzy:
    Kowalski, R.
    Liszka, K.
    Łaciak, M.
    Oliinyk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/298888.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    heating system
    pressure regulating station
    gas pressure station
    heat loss
    energy efficiency
    Opis:
    In order to avoid improper work of some appliances in pressure regulating stations, it is needed to heat up the gas stream before its pressure decrease. This is done by heating system, which consist of natural gas boiler, heat exchanger, pipes and the working medium that circulate in the system (describing in simple terms). Surfaces of thermally uninsulated heating system have temperature above ambient temperature, what could be the cause of heat loss. This paper presents the results of performed calculations, based on data obtained from the test rig, which has been mounted in the working pressure regulating station. Test rig has been designed in such a way, that it is possible to calculate total heat loss of the heating installation and thus determine the energy efficiency of natural gas heating process.
    Źródło:
    AGH Drilling, Oil, Gas; 2016, 33, 2; 433-446
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An analysis of the changes of the composition of natural gas transported in high-pressure gas pipelines
    Autorzy:
    Janusz, P.
    Liszka, K.
    Łaciak, M.
    Oliinyk, A.
    Susak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/299187.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    natural gas
    transmission system
    Opis:
    Natural gas is one of the major fuels covering home demand for energy. Natural gas consumption has been observed to systematically increase over the last five years. Intensive works are conducted on the development of the national gas network leading to the diversifi cation of directions and sources of blue gas. Natural gas consists of various components. Its composition depends on the source of origin and has a decisive influence on thermodynamic and hydraulic properties. The content of heavy hydrocarbon gases increases the calorific value of the gaseous fuel, whereas the high content of inorganic components lowers the amount of energy obtained in the course of natural gas combustion, and environmentally hazardous chemical compounds are formed. As far as gas transport is concerned, too high content of heavy hydrocarbon gases (propane, butane, pentane) is disadvantageous. In high pressure conditions the C3-C5 class gases change to a liquid phase. This results in the change of the calorific value, lower hydraulic efficiency of the pipeline diameter and potentially faster corrosion processes on the inner surface of the pipeline.This paper is aimed at presenting results of changes of natural gas composition in a function of distance at which the fuel is transported. The respective analyses will be conducted with the use of analytical methods and commercial pipeline simulators.
    Źródło:
    AGH Drilling, Oil, Gas; 2015, 32, 4; 713-722
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of hydrogen transported through a gas pipeline on the functioning of gas compression station work
    Autorzy:
    Zabrzeski, Ł.
    Janusz, P.
    Liszka, K.
    Łaciak, M.
    Szurlej, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/298659.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    natural gas pipelines
    natural gas
    hydrogen
    gas compression stations
    Opis:
    The production of hydrogen based on excess electricity and transporting it by pipeline as a mixture with natural gas may be an excellent completion of an energy system. When dealing with gas transmission over long distances, gas compression stations become an integral part of the natural gas grid, providing desired pressure of this source of power in pipes. In this paper the effect that hydrogen admixture has on the main parameters of the operation of gas compression stations was described.
    Źródło:
    AGH Drilling, Oil, Gas; 2017, 34, 4; 959-968
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of ORC systems at natural gas compression station
    Autorzy:
    Kowalski, R.
    Łaciak, M.
    Liszka, K.
    Oliinyk, A.
    Paszylk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/299125.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    natural gas
    transmission pipelines
    natural gas composition
    contamination of natural gas
    Opis:
    Natural gas is a mixture of hydrocarbons with combustible methane as the main component, the content of which usually exceeds 90. Among the remaining components of natural gas are ethane, propane, butane, nitrogen, carbon dioxide, sulfur compounds. Helium can be also found in some natural gas fields. The composition of natural gas depends on, e.g. the field from which the gas comes, and also way in which it is transported, i.e. pipelines, LNG technology. The quality of natural gas is regulated by respective standards. Gas transmission pipelines are the most popular method, dominating on the international gas market, though LNG technology has recently started to play the more and more prominent role. The intensive development of renewable energy sources is accompanied by the development of the Power to gas technology - the electric energy excess is used for the hydrogen production, which can be directed to the existing natural gas network and such a mixture of natural gas and nitrogen is transmitted. At present transmission pipelines for nitride natural gas Ls and Lw exist in Poland. The aim of this paper is analyzing the influence of natural gas admixtures on the operation parameters of transmission pipelines.
    Źródło:
    AGH Drilling, Oil, Gas; 2017, 34, 2; 513-530
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applicability of equations for pressure losses in transmission gas pipelines
    Autorzy:
    Janusz, P.
    Liszka, K.
    Łaciak, M.
    Smulski, R.
    Oiinyk, A.
    Susak, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/298585.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    natural gas
    transmission system
    Opis:
    Transmission pipelines for gas have large a diameter and high pressure. Gas pump stations are built along the pipeline and their main task is to increase gas pressure to the technologically and economically justified level. Determining the exact value of pressure drop in the pipeline is the major problem in gas pipeline transport. The drop of pressure is a result of external and internal frict ion. The pressure can be lowered in the gas pipeline but this depends on the geometric parameters of the latter, i.e. le ngth, inner diameter, full-length profile, quantity and temperature of transmitted gas and its thermodynamic properties. The technical condition of the transmission pipe- line and the character of gas flow in the pipeline have a great infl uence on the pressure variations. A number of mathematical models focus on determining the drop of pressure in a pipeline section. The value of deviations of calculated values from the real data in each mode l strictly depends on the conditions in the pipeline. The aim of this paper is an analysis of applicability ranges of various equations for pressure losses in transmission pipelines.
    Źródło:
    AGH Drilling, Oil, Gas; 2015, 32, 3; 525-538
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Technological and safety aspects of CNG home fast refueling units
    Autorzy:
    Kuczyński, S.
    Liszka, K.
    Łaciak, M.
    Oliinyk, A.
    Strods, R.
    Szurlej, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/298681.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    CNG
    natural gas
    safety
    natural gas vehicles
    Opis:
    Despite all global economic shifts and the fact that natural gas is recognized worldwide as the main and the leading alternative to oil products in transportation sector, there is a huge barrier to switch passenger vehicle segment to natural gas – the lack of refueling infrastructure for natural gas vehicles. The key to solving that problem and providing barrier breaking refueling infrastructure solution for natural gas vehicles (NGV) is home fast refueling units. It operates using natural gas (methane), which is being provided through gas pipelines at client’s home, and electricity connection point. It enables an environmentally friendly NGV’s home refueling just in minutes. The underlying technology is one stage hydraulic compressor (instead of multistage mechanical compressor technology) which provides the possibility to compress low pressure gas from residential gas grid to 200 bar for its further usage as a fuel for NGVs. More than efficiency and convenience, the direct hydraulic compressor technology provides compelling cost and lifetime advantages as well as superior convenience over other solutions. Aims of this article is to compare technical, technological and safety aspects of home refueling units and estimate a perspectives of natural gas vehicles as an alternative for regular vehicles.
    Źródło:
    AGH Drilling, Oil, Gas; 2016, 33, 2; 425-432
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and Characterization of Carbon Nanotubes Decorated with Gold Nanoparticles
    Autorzy:
    Dobrzanski, L.
    Pawlyta, M.
    Krzton, A.
    Liszka, B.
    Tai, C.
    Kwasny, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1536456.pdf
    Data publikacji:
    2010-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.07.Nb
    Opis:
    In presented work we report results of simple and viable method for producing Au/CNT composites. Chemical composition and crystallographic structure of the Au/CNT composites was confirmed by X-ray diffraction measurements, while transmission and scanning electron microscopy were used to characterize the morphology of nanocrystals as well as the distribution of nanocrystals in the composite. The obtained particles with relatively small diameter (less than 9 nm) were found to be spatially well dispersed on the carbon nanotubes. The density of attached Au-nanoparticles is not sufficient, and cannot be improved by simple increasing gold loading.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 3; 483-486
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the participation of various components in natural gas transport
    Autorzy:
    Apostol, R.
    Kowalski, R.
    Liszka, K.
    Łaciak, M.
    Olijnyk, A.
    Szurlej, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/299297.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    natural gas
    transmission pipelines
    natural gas composition
    contamination of natural gas
    Opis:
    Natural gas is a mixture of hydrocarbons with combustible methane as the main component, the content of which usually exceeds 90%. Among the remaining components of natural gas are ethane, propane, butane, nitrogen, carbon dioxide and sulfur compounds. Helium can be also found in some natural gas fields. The composition of natural gas depends on, e.g. the field from which the gas comes, and also way in which it is transported, i.e. pipelines, LNG technology. The quality of natural gas is regulated by respective standards. Gas transmission pipelines are the most popular and dominant method of gas transport on the international gas market, though LNG technology has recently started to play an increasingly prominent role. The intensive development of renewable energy sources is accompanied by the development of the Power to gas technology – the electric energy excess is used for the hydrogen production, which can be directed to the existing natural gas network and such a mixture of natural gas and nitrogen is transmitted. At present, transmission pipelines for nitride natural gas Ls and Lw exist in Poland. The aim of this paper is to analyze the influence of natural gas admixtures on the operational parameters of transmission pipelines.
    Źródło:
    AGH Drilling, Oil, Gas; 2017, 34, 4; 883-894
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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