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Wyszukujesz frazę "biomass gas" wg kryterium: Temat


Tytuł:
Combustion in a supercharged biomass gas engine with micro-pilot ignition - effects of injection pressure and amount of diesel fuel
Autorzy:
Tomita, E.
Fukatani, N.
Kawahara, N.
Maruyama, K.
Komoda, T.
Powiązania:
https://bibliotekanauki.pl/articles/243110.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engine
cogeneration
pyrolysis gas
biomass gas
visualization
Opis:
It is one of the solutions to use biomass as fuel in order to realize a sustainable society and to reduce carbon dioxide emission .A single cylinder with supercharged and micro-pilot gas engine operated with four kinds of pyrolysis gas as fuel for cogeneration use. The effects of injection pressure and amount of diesel fuel on engine performance and exhaust emissions were investigated. The combustion periods of initial and main stages were determined from the analysis of mass fraction burned. The combustion process was also visualized with a colour highspeed video camera. Main results obtained in this study are as follows: When the amount of diesel fuel increased in the same injection pressure, smoke was exhausted. However, the smoke was reduced with higher injection pressure. The period of the initial combustion is almost the same even if injection pressure and amount of diesel fuel increases. Therefore, it is enough to ignite the mixture with small amount of diesel fuel. For the case with lower calorific gas, the period of main combustion was shortened owing to the combustion of diesel fuel when the amount of diesel fuel increases. When the mixture contains much hydrogen, the period of main combustion does not become small in higher injection pressure and larger amount of diesel fuel. On the other hand, when the mixture does not contain much hydrogen, the effect of diesel fuel becomes strong.
Źródło:
Journal of KONES; 2007, 14, 2; 513-520
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibilities of supplying internal combustion engines by wood gas
Autorzy:
Piętak, A.
Duda, K.
Chraplewska, N.
Powiązania:
https://bibliotekanauki.pl/articles/247405.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
producer gas
wood gas
combustion
biomass gasification
environmental protection
Opis:
The article presents possibilities of implementation gas, came by wood biomass gasification, to run on internal combustion engines powered normally by Diesel fuel. Carbonization, gasification and burning effects were introduced. Main processes occurring during biomass gasification were shown. Basic chemical reactions characteristic to each stage were named. The differences in composition of received gas according to sort of biomass, gasification medium and type of generator were mentioned. In article were depicted way of modus operandi and structures of typical generators along with its advantages and disadvantages. gas properties obtained by this method and its main parameters were presented. The advantages and disadvantages posed by the use of wood gas in internal combustion engines were described. Parameters of the gas that should be amended to allow the engine to be powered were listed. Also were shown ways of changing these parameters. Necessary engine modifications to be able to supply it with wood gas were presented. The article finishes with conclusions and risks resulting from the use of this technology and also possible impact on the environment.
Źródło:
Journal of KONES; 2010, 17, 3; 369-376
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Issledovanie tekhnicheskikh parametrov sistemy ochistki generatornogo gaza
The investigation of the technical specifications of gas generator purification system
Autorzy:
Civenkova, N.
Golubenko, A.
Muljar, A.
Los, L.
Romanishin, A.
Powiązania:
https://bibliotekanauki.pl/articles/77796.pdf
Data publikacji:
2016
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
gas production
generator gas
biomass
gas cooling
flue gas purification
technical specification
agricultural enterprise
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2016, 18, 1
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of the performance of a pyrolysis reactor for G50 chips
Autorzy:
Dhaundiyal, Alok
Singh, Suraj
Powiązania:
https://bibliotekanauki.pl/articles/240925.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biomass
thermal analysis
pyrolysis
gas yield
performance index
Opis:
The aim of any industrial plant, which is dealing in the energy sector, is to maximise the revenue generation at the lowest production cost. It can be carried out either by optimizing the manpower or by improving the performance index of the overall unit. This paper focuses on the optimisation of a biomass power plant which is powered by G50 hardwood chips (Austrian standard for biomass chips). The experiments are conducted at different operating conditions. The overall effect of the enhanced abilities of a reactor on the power generation is examined. The output enthalpy of a generated gas, the gas yield of a reactor and the driving mechanism of the pyrolysis are examined in this analysis. The thermal efficiency of the plant is found to vary from 44 to 47% at 400°C, whereas it is 44 to 48% for running the same unit at 600°C. The transient thermal condition is solved with the help of the lumped capacitance method. The thermal efficiency of the same design, within the constraint limit, is enhanced by 5.5%, whereas the enthalpy of the produced gas is magnified by 49.49% through nonlinear optimisation. The temperature of biomass should be homogenous, and the ramping rate must be very high. The 16% rise in temperature of the reactor is required to reduce the mass yield by 20.17%. The gas yield of the reactor is increased by up to 85%. The thermal assessment indicates that the bed is thermally thin, thus the exterior heat transfer rate is a deciding factor of the pyrolysis in the reactor.
Źródło:
Archives of Thermodynamics; 2020, 41, 1; 245-263
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forest biomass for bioenergy: opportunities and constraints for good governance. A case study from Italy
Autorzy:
Maesano, M.
Drigo, R.
Lasserre, B.
Chirici, G.
Marchetti, M.
Powiązania:
https://bibliotekanauki.pl/articles/52297.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
forest biomass
bioenergy
biomass estimation
climate change
greenhouse gas
governance
WISDOM methodology
Italy
Opis:
Interest in the use of biomass for energy has increased significantly in the last few years. The latest report by the Intergovernmental Panel on Climate Change highlights the influence mankind has had on the climate: an unprecedented increase in GHG levels in the last 800,000 years and a rise of 40% in CO2 concentrations since pre-industrial times. The challenge now is to find energy alternatives, and in this context, one important option is bioenergy, one of the most important energy sourcesof the future. In light of this, the goal of this paper was to assess the sustainable potential of woodfuel resources in Italy using WISDOM methodology. WISDOM, developed by the FAO, has been applied in many countries around the world. From this study, at national level, household consumption was at 19.3 Mt in 2003 (averagevalue), while the potential supply of woody biomass (productivity) was 24.9 Mt(average value), with a surplus of almost 6 million tons between household consumption and productivity. This study represents an advance in knowledge of the biomass potential for energy use in Italy, and, as such, is subject to possible future improvement. Forest bioenergy development creates good opportunities to mobilize the production potential of European forests, and to contribute to a more climate-friendly, bio-based economy.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2014, 57, 192
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Willow biomass as a feedstock for gasification
Autorzy:
Stolarski, M. J.
Krzyżaniak, M.
Szczukowski, S.
Tworkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/334066.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
willow
biomass
gasification
gasifier
raw gas
mass and energy balances
Opis:
A study concerns the balance of mass and energy in the process of gasification of willow chips (acquired in 5-year rotation), as well as in the process of combustion of the gasification product with flue gas heat recovery. Thermochemical conversion of willow biomass resulted in the production of raw gas with the calorific value of 4937 kJ/kg. The product of gasification comprised a mixture of gaseous compounds, tars and water vapour. The gaseous compounds determined in the study included: hydrogen (8.30%), carbon monoxide (27.51%), methane (1.51%), carbon dioxide (3.79%), nitrogen (55.87%) and small amounts of hydrocarbons C1-C3. The ultimate production output of willow fuel was equal to 91.5 kg of chips per hour and the power output achieved 315 kW. Raw gas produced from willow biomass, mixed with air, was burnt at a temperature exceeding 1000oC and the flue gas heat was recovered in a water boiler and distributed in the central heating system. The collected thermal energy accounted for over 79% of the chemical energy of the biomass at the start of the process.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2013, 58, 1; 168-171
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conditioning of a biomass gasification product gases for supplying a combustion engine
Kondycjonowanie gazów podawanych do silnika spalinowego powstałych w procesie zgazowania biomasy
Autorzy:
Górniak, A.
Janicka, A.
Skrętowicz, M.
Trzmiel, K.
Włostowski, R.
Wróbel, R.
Zawiślak, M.
Powiązania:
https://bibliotekanauki.pl/articles/132928.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
biomass gasification
SNG
gas conditioning
zgazowanie biomasy
syngaz
kondycjonowanie gazów
Opis:
The consequence of biomass gasification is generation of a gas mixture composed mainly of hydrogen, carbon mono and dioxide, and methane, called SNG (Substitute Natural Gas) which can be utilized as an alternative fuel for internal combustion engines. However, the product gas mixture cannot be directly supplied to the engine due to variability of its composition as well as its impurities. This brings the necessity to conduct a series of procedures of gas purification and conditioning before supplying the engine. This paper therefore deliberates a concept of gas conditioning method.
W wyniku procesów zgazowania biomasy powstaje mieszanina gazów składająca się między innymi z wodoru, tlenu węgla, ditlenku węgla i metanu, tzw. syngaz, który może zostać wykorzystany jako paliwo alternatywne do silnika spalinowego. Powstały syngaz, ze względu na swój skład (występowanie zanieczyszczeń) i parametry nie może być jedna podany do silnika w sposób bezpośredni. Niezbędne jest więc przeprowadzenie szeregu zabiegów kondycjonowania i oczyszczania gazu syntetycznego. W pracy przedstawiono koncepcję i metody kondycjonowania gazów.
Źródło:
Combustion Engines; 2015, 54, 3; 816-820
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Konstrukcja dystrybutora gazu, a efektywność suszenia fluidalnego wybranych rodzajów rozdrobnionej biomasy
Gas distributor for fluidized bed drying of biomass
Autorzy:
Kamińska, A.
Ciesielczyk, W.
Powiązania:
https://bibliotekanauki.pl/articles/2071937.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
dystrybutor gazu
biomasa
fluidyzacja
suszenie
gas distributor
biomass
drying
fluidization
Opis:
Przedstawiono wyniki badań testowych dotyczących możliwości suszenia fluidalnego wybranych rodzajów biomasy. Określono warunki pozwalające na uzyskanie efektywnej fluidyzacji zrębków drzewnych. Zaprezentowano oryginalny dystrybutor gazu umożliwiający efektywną fluidyzację rozdrobnionej biomasy drzewnej.
Test results dealing with possibilities of fluidized-bed drying of selected kinds of biomass are described. Conditions for effective fluidization of wooden chunks were determined. An original design of gas distributor for effective fluidization of selected kinds of grinded biomass is presented.
Źródło:
Inżynieria i Aparatura Chemiczna; 2012, 6; 326-327
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovative Method of Forecasting the Generator Gas Composition after the Process of Pyrolysis and Gasification
Autorzy:
Slowak, Anna Maria
Powiązania:
https://bibliotekanauki.pl/articles/2174900.pdf
Data publikacji:
2022
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
gasification
pyrolysis
biomass
regenerative energy
synthetic gas
mathematical modeling
Gibbs energy
Opis:
The article presents a new approach to forecasting producer gas composition. Thermochemical treatment of biomass was presented as an effective method of producing flammable gas. The methods of predicting the gas composition of the generator are described, and then its efficiency depends on the device’s parameters. In order to create a method for forecasting gas composition, the authors’ works were used as the basis on which the energy characteristics of the gases obtained were assessed. It was assumed in this paper that it is essential to understand the influence of each parameter on the energy characteristics of the gas. It made it possible to optimize the composition and predict thermal characteristics. This article presents the results of experimental studies on biomass gasification and a mathematical model based on Gibbs free energy.
Źródło:
Rocznik Ochrona Środowiska; 2022, 24; 97--109
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ recyrkulacji spalin na proces spalania biomasy
Effect of combustion gas recirculation on biomass burning process
Autorzy:
Polák, M.
Neuberger, P.
Rutkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/291806.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
biomasa
spalanie
tlenek azotu
recyrkulacja spalin
biomass
burning
nitrogen oxide
exhaust gas recirculation (EGR)
Opis:
W procesie spalania biopaliw, pochodzenia roślinnego pojawia się problem zwiększonej koncentracji tlenków azotu w odprowadzanych spalinach. Aby obniżyć zawartość tlenków azotu w spalinach kotłów wielkoprzemysłowych stosuje się recyrkulację spalin. Celem prowadzonych badań było sprawdzenie wymienionej technologii w kotłach małej mocy podczas procesu spalania biomasy. Przedmiotem badań był kocioł wodny o mocy 25 kW gdzie jako paliwo stosowano pelety z drewna o średnicy 8 cm oraz ziarno żyta. Uzyskane wyniki badań potwierdziły rozpatrywaną wyżej analogię. Najkorzystniejsze wyniki uzyskano przy recyrkulacji r = 0,3 ze współczynnikiem nadmiaru powietrza [lambda] = 1,3÷1,4 przy spalaniu pelet z drewna, zaś [lambda] = 1,5÷1,6 w przypadku spalania ziarna żyta.
There is a problem of increased concentration of nitrogen oxides in exhaust systems in the process of biofuel originating from plants. Ehaust gas recirculation is used in order to reduce nitrogen oxide content in the industrial boilers. The purpose of research was to apply and observe the mentioned process in small power boilers during the process of biomass burning. A 25 kW water boiler burning 8 cm dia. wood pellets and rye grain was selected as the subject of research. The obtained results confirmed analogy mentioned above. Most beneficial results were obtained at recirculation r = 0.3 using air ratio [lambda] = 1.3÷1.4 while burning wood pellets, while air ratio of [lambda] = 1.5÷1.6 was used for burning of grain.
Źródło:
Inżynieria Rolnicza; 2007, R. 11, nr 7 (95), 7 (95); 169-176
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł

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