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Wyszukujesz frazę "inert" wg kryterium: Temat


Tytuł:
Inter gases as one of the ways to reduce the risk of endogenous fires in hard coal mines
Autorzy:
Szurgacz, Dawid
Sobik, Leszek
Brodny, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/2064924.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
air flow
longwall complex
inert gases
Opis:
Endogenous fires are currently one of the most common threats in hard coal mines. They are very dangerous for the staff and can cause very large economical loses. Therefore, the scope of activities aimed at limiting the possibility of these fires and reduction of their consequences constantly broadens. The paper presents the results of research aimed at determining the efficiency of the ventilation system applied to reduce the risk of endogenous fires in the areas where inert gases are used. The calculations included carbon dioxide and nitrogen. Inertisation is one of the ways of combating endogenous fires. This method is included in the developed comprehensive method to reduce the possibility of these fires. The results obtained and the method developed and later applied, should have a significant impact on improving the safety of operations in the scope of occurrence and consequences of endogenous fires.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 183--190
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inert catalyst in compersion ignition engine - pahs emission
Autorzy:
Janicka, A.
Walkowiak, W.
Szczepaniak, W.
Powiązania:
https://bibliotekanauki.pl/articles/243393.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
inert catalyst
PAHs
compression ignition engine emission
Opis:
In this research work the influence of an inert catalyst on toxic emission from a self-ignition engine has been investigated. In particular polycyclic aromatic hydrocarbons (pahs) emissions, which are known to have mutagenic and carcinogenic properties, have been studied. The experimental results show that implementation of catalytic coating on chosen elements of diesel engine causes decrease in pahs concentration, what is connected with toxicity decrease in exhaust gases. The inert catalyst application (active coating on research engine glow plugs) is very advantageous for decrease of total polycyclic aromatic hydrocarbons (pahs) concentration in engine exhaust gases, especially on idle running. The applied modification of engine combustion space causes significant decrease of exhaust toxicity. Because of high effectiveness in pahs concentration and toxicity decrease it is recommended to continue the researches and extend them by various physical-chemical modifications of catalytic layers. The paper research work stand containing engine test house, engine with a break, fuel reservoir, NO, CO and smoke level analyzers, filter, tube with active coal, exhaust gases uptake system and engine control system. The pahs concentration marked in idle running diesel engine in two states of engine work, pahs concentration marked in diesel engine and the total pahs concentration in engine exhaust gases and pahs toxicity in engine exhaust gases for two engine loads are presented in the paper.
Źródło:
Journal of KONES; 2007, 14, 3; 227-232
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Planetary temperatures in the presence of an inert, nonradiative atmosphere
Autorzy:
Nicol, John Leslie
Powiązania:
https://bibliotekanauki.pl/articles/1050896.pdf
Data publikacji:
2020-09-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
planet
inert atmosphere
temperatures
capacity/conductivity
soil
air
Opis:
This study considers solid planets at about 300 K and an inert atmosphere having no interaction with associated radiation. Processes considered include transfer of energy from the surface skin to underlying layers depending on thermal properties. Temperatures of the surface depend on the rates of transfer of energy between soil layers. The atmosphere is warmed at base by contact with the surface, convection and turbulence distributing higher temperatures through the air. Comparisons between theoretical and measured temperatures show a close similarity. Mean planetary temperatures are calculated, depending on thermal parameters and the intensity of light/radiation from the particular solar system.
Źródło:
Quaestiones Geographicae; 2020, 39, 3; 69-85
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inert catalyst in compression ignition engine-VOCs emission
Autorzy:
Janicka, A.
Walkowiak, W.
Szczepaniak, W.
Powiązania:
https://bibliotekanauki.pl/articles/244311.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
inert catalyst
VOCs
compression ignition engine emission
Opis:
The volatile organic compounds (VOC's) are significant group o air pollution emitted during fuel combustion in diesel engines. This research work is continuation of research where the influence of an inert catalyst on toxic emission from a self-ignition engine has been investigated. In particular volatile organic compounds VOC's emissions which are known to have mutagenic and carcinogenic properties, have been studied. The experimental results show that implementation of catalytic coating on chosen elements of diesel engine causes change of percentage participation of particular compounds in their sum and decrease of their concentration. The analysis of chosen compounds (benzene and formaldehyde) shows that the modification which was proposed causes increase of concentration of those substances when engine works in specific conditions, what is connected with change of engine exhaust toxicity and decrease in PAHs concentration, what is connected with toxicity decrease in exhaust gases. In particularly research work stand, the comparison of total VOC's concentration with and without catalytic coating, the comparison of benzene concentration, the comparison of formaldehyde concentration, the comparison of toxicity level with and without catalytic coating are presented in the paper.
Źródło:
Journal of KONES; 2007, 14, 4; 127-131
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Новый многоцелевой полиминеральный композит и области его применения
New multi-purpose polymineral composite and areas of its application
Autorzy:
Itriashvili, L. A.
Iremasvili, I.
Hosrosvili, E.
Ujma, A.
Powiązania:
https://bibliotekanauki.pl/articles/2065505.pdf
Data publikacji:
2018
Wydawca:
Politechnika Częstochowska
Tematy:
soils
inert materials
water accumulation
water tightness
composites
hydroinsulation efficiency
Opis:
Разработан новый экологически чистый полиминеральный композит - гидрогель ПМК и технология его производства. На базе ПМК и различных местных грунтов и инертных дисперсных материалов были разработаны нетрадиционные, технологически простые, высокоэффективные материалы, а также технологии, технические и конструктивные решения, обеспечивающие эффективные и экономически выгодные решения следующих проблем: увеличение водо-аккумулятивной, водоудерживающей способности, эрозионной устойчивости и улучшение агромелиоративных свойств почв; гидроизоляция элементов, узлов и повреждений сооружений.
A new ecologically clean polymineral composite - hydrogel PMK and its production technology have been developed; an enterprise has been organized and commercial manufacture of PMK has been carried out. On the basis of PMK and various local grounds and inert disperse materials, non-traditional technologically simple high-effective materials and composites as well as technologies and technical and constructive designs ensuring effective and economically profitable solutions of the following problems have been developed: increase in water-accumulative water-retaining capacity and erosion-preventive stability and improvement of agroreclamative properties of soils; hydroinsulation of water-accumulative water-transmitting and other installations, their elements, units and/or damages.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2018, 7, 1; 77--82
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ grubości otoczki gęstwy drożdżowej na kulach inertu na proces jej suszenia w suszarce fontannowej
Influence of the envelope thickness of yeast slurry on inert spheres on the drying process in a spouted bed drier
Autorzy:
Peroń, S.
Kozłowski, R.
Zdrojewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/286963.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
gęstwa drożdżowa
suszenie
kule inertu
yeast slurry
drying
inert material
Opis:
Doświadczenie przeprowadzono w laboratoryjnej suszarce fontannowej. Mierzono zmiany zawartości wody w otoczkach gęstwy drożdżowej suszonej na szklanych kulach. Suszenie przeprowadzono przy temperaturze czynnika suszącego t = 90°C i jego prędkości v = 4,2 m/s. Grubość otoczki na kulach wahała się od 0,08 do 0,25 mm. Początkowa zawartość wody w gęstwie wynosiła 3,5 kg H2O/kg s.m., a końcowa 0,1 kg H2O/kg s.m. Wpływ grubości otoczki na kinetykę suszenia przedstawiono w postaci wykresów.
The trial were carried out in a lab spouted bed drier. Measurements of water content in the envelopes of yeast slurry dried on glass spheres were made. The drying was performed at the temperature of drying medium t = 90°C, at air flow rates v = 4.2 m/s. Thickness of the slurry envelopes on the spheres ranged from 0.08 to 0.25 mm. The initial water content in the slurry was 3.5 kg H2O/kg d.m. and the final one 0.1 kg H2O/kg d.m. The effect of the envelope thickness on the drying kinetics was described by linear equations.
Źródło:
Inżynieria Rolnicza; 2005, R. 9, nr 4, 4; 77-84
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical Modelling of Degassing Process by Blowing of Inert Gas
Autorzy:
Michalek, K.
Tkadlečková, M.
Socha, L.
Gryc, K.
Saternus, M.
Pieprzyca, J.
Merder, T.
Powiązania:
https://bibliotekanauki.pl/articles/351001.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
physical modelling
refining ladle
inert gas blowing
degassing process
impeller
Opis:
This paper deals with the possibilities of using physical modelling to study the degassing of metal melt during its treatment in the refining ladle. The method of inert gas blowing, so-called refining gas, presents the most common operational technology for the elimination of impurities from molten metal, e.g. for decreasing or removing the hydrogen content from liquid aluminium. This refining process presents the system of gas-liquid and its efficiency depends on the creation of fine bubbles with a high interphase surface, uniform distribution, long period of its effect in the melt, and mostly on the uniform arrangement of bubbles into the whole volume of the refining ladle. Physical modelling represents the basic method of modelling and it makes it possible to obtain information about the course of refining processes. On the basis of obtained results, it is possible to predict the behaviour of the real system during different changes in the process. The experimental part focuses on the evaluation of methodical laboratory experiments aimed at the proposal and testing of the developed methods of degassing during physical modelling. The results obtained on the basis of laboratory experiments realized on the specific physical model were discussed.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 2; 987-992
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on the process of recovering low-temperature waste heat from a flue gas in a pilot-scale plant
Autorzy:
Szulc, P.
Tietze, T.
Wójs, K.
Powiązania:
https://bibliotekanauki.pl/articles/185836.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heat recovery
condensation
inert gas
odzysk ciepła
kondensacja
gaz obojętny
Opis:
This paper presents studies carried out in a pilot-scale plant for recovery of waste heat from a flue gas which has been built in a lignite-fired power plant. The purpose of the studies was to check the operation of the heat recovery system in a pilot scale, while the purpose of the plant was recovery of waste heat from the flue gas in the form of hot water with a temperature of approx. 90 °C. The main part of the test rig was a condensing heat exchanger designed and built on the basis of laboratory tests conducted by the authors of this paper. Tests conducted on the pilot-scale plant concerned the thermal and flow parameters of the condensing heat exchanger as well as the impact of the volumetric flow rate of the flue gas and the cooling water on the heat flux recovered. Results show that the system with a condensing heat exchanger for recovery of low-temperature waste heat from the flue gas enables the recovery of much higher heat flux as compared with conventional systems without a condensing heat exchanger.
Źródło:
Chemical and Process Engineering; 2016, 37, 4; 529-543
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experience in the Implementation of Drilling Waste Utilization Technology on the Example of a Large Oil and Gas Region of Russia
Autorzy:
Bogdanova, Olga
Okmynskaia, Valentina
Powiązania:
https://bibliotekanauki.pl/articles/2026735.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
drilling waste
safe disposal
inert
building material
environmental conservation
waste recycling
Opis:
The oil industry is characterized by an intense impact on the environment, which inevitably causes its change. In the production process, the existing state of the environment in the territories of industrial facilities is completely or partially disturbed. Today, the result of the negative environmental impact of the fuel and energy industry on the nature of the regions of northern Russia has resulted in millions of tons of drilling and oil production waste stored in sludge pits and causing colossal damage to the atmosphere, hydro- and lithosphere of the country’s oil-producing territories. The aim of this work is to improve the technological process of utilization of drilling waste in the fields with the receipt of an inert building material that does not have a negative impact on the components of the natural environment. In the course of work, based on the analysis of the proposed disposal methods, the most optimal option was selected and a technology for disposal of drilling waste at an oil field was developed, a situational map of the object was presented, and an estimate of the cost of the proposed disposal technology was carried out. Based on the results of the work carried out, a conclusion was made about the effectiveness of the utilization technology under consideration, since it was revealed a decrease in the amount of generated and accumulated waste, a decrease in the costs of maintaining and reclamation of waste accumulation / disposal facilities.
Źródło:
Journal of Ecological Engineering; 2022, 23, 2; 132-139
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nutrition status of greenhouse tomato grown in inert media. Part II. Microelements
Autorzy:
Chohura, P.
Komosa, A.
Powiązania:
https://bibliotekanauki.pl/articles/11347109.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
inert medium
fertigation
microelement
greenhouse tomato
nutritional status
soilless culture
tomato
Opis:
The effect of inert media and fertilization levels on nutrition status of green house tomato cv. ‘Maeva F₁’ was investigated. Mean microelement content was: 118.5 mg Fe, 51.7 mg Zn, 269.0 mg Mn and 11.43 mg Cu kg⁻¹ of dry mass of the index parts of the tomato (9–10 leaf form the top). No significant effect of rockwool, expanded clay and polyurethane foam on microelement contents was found in the index parts of the greenhouse tomato, except for zinc whose content was significantly higher in the leaves of the plants grown in rockwool and polyurethane foam than in expanded clay. Fertilization levels did not affect significantly the content of iron, manganese and copper in the index parts, except for zinc whose content lowered at higher fertilization level. High tolerance of the tomato plants to zinc and manganese content in feeding solutions was indicated. No phytotoxicity of zinc nor manganese was found at the content of 2.01 mg Zn and 1.78 mg Mn dm⁻³ of water or feeding solution.
Badano wpływ podłoży inertnych oraz poziomów nawożenia na stan odżywienia pomidora szklarniowego. W częściach wskaźnikowych pomidora szklarniowego odmiany ‘Maeva F₁’ (9–10 liść od wierzchołka) średnia zawartość mikroelementów wynosiła: Fe – 118,5, Zn – 51,7, Mn – 269,0, Cu – 11,43 mg kg⁻¹ s.m. części wskaźnikowych. Nie stwierdzono istotnego wpływu wełny mineralnej, keramzytu oraz pianki poliuretanowej na zawartość mikroelementów w częściach wskaźnikowych pomidora szklarniowego z wyjątkiem cynku, którego zawartość była istotnie niższa w liściach roślin uprawianych w keramzycie. Poziomy nawożenia również nie wpływały istotnie na zawartość mikroskładników w częściach wskaźnikowych z wyjątkiem cynku. Wykazano wysoką tolerancję pomidora na zawartość cynku i manganu w pożywkach. Nie stwierdzono fitotoksyczności cynku przy zawartości 2,01 mg Zn·dm⁻³ i 1,78 mg Mn·dm⁻³ wody lub pożywki.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2003, 02, 2; 15-23
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł

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