Mini space thruster that runs on water
This tiny fingernail-length space thruster chip runs on the greenest propellant of all: water.
Space Exploration
Sep 14, 2023
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22
News tagged with combustion
Satellite data show wildfire, soil emissions likely increasing air pollution in remote forests
Satellite data from across California's landscapes reveal an increase in nitrogen dioxide levels in remote forest areas, and wildfire and soil emissions are likely the reasons why, according to a paper from University of ...
Earth Sciences
Aug 29, 2023
0
12
How a molecular motor moves in a network
A new study determines the efficiency of a single-molecule heat engine by considering a series of ratchets that transfer energy along a network.
Nanophysics
Jul 25, 2023
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0
Catalyst can control methane emissions in natural gas engines
A catalyst using a single or just a few palladium atoms removed 90% of unburned methane from natural gas engine exhaust at low temperatures in a recent study. While more research needs to be done, the advance in single atom ...
Analytical Chemistry
Jul 20, 2023
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14
A breakthrough in sustainable methane utilization technology
99.5% of combustible ice is methane, making it an important reserve energy source. It is inferred that the reserves of combustible ice in the South China Sea amount to the equivalent of at least 80 billion tons of oil.
Analytical Chemistry
Apr 3, 2023
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11
International research team analyzes February 2023 Ohio train derailment
On February 3, 2023, a train derailed in the United States near East Palestine, Ohio, leading to the combustion of vinyl chloride. Following that accident, an international team of researchers undertook an in-depth analysis ...
Environment
Apr 3, 2023
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2
New study shows how Chicago pollution varies by neighborhood
If you live along one of the major interstate highways running through Chicago or directly next to Lake Michigan, you are regularly exposed to more air pollution than the rest of the city, a new Northwestern University study ...
Earth Sciences
Mar 27, 2023
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56
The world's fastest 2D movie of laser-particle interactions and temperature in flames
Burning hydrocarbon fuels produces nano-sized soot particles and Polycyclic Aromatic Hydrocarbons (PAH)—harmful emissions that impact our environment. The carbon-made particles make up 70% of our interstellar space, and ...
Optics & Photonics
Feb 23, 2023
0
60
Incineration of graphene-containing plastics: Health risk of graphene residues investigated in 3D lung model
Due to its exceptional properties, graphene is now added to a wide range of plastics. The carbon-based material improves, for instance, the conductivity and stability of composites.
Bio & Medicine
Feb 21, 2023
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33
Scientists probe the source of stochastic occurrence of super-knock in engines running on hydrogen/methane fuels
In a study published in Combustion and Flame, researchers investigated the impact of non-thermal reaction chemistry on the propagation of combustion fronts for a H2-CH4 fuel mixture burning in air within a bounded domain, ...
Analytical Chemistry
Jan 31, 2023
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16
Combustion
Combustion (English pronunciation: /kəmˈbʌs.tʃən /) or burning is the sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat and conversion of chemical species. The release of heat can result in the production of light in the form of either glowing or a flame. Fuels of interest often include organic compounds (especially hydrocarbons) in the gas, liquid or solid phase.
In a complete combustion reaction, a compound reacts with an oxidizing element, such as oxygen or fluorine, and the products are compounds of each element in the fuel with the oxidizing element. For example:
A simple example can be seen in the combustion of hydrogen and oxygen, which is a commonly used reaction in rocket engines:
The result is water vapor.
Complete combustion is almost impossible to achieve. In reality, as actual combustion reactions come to equilibrium, a wide variety of major and minor species will be present such as carbon monoxide and pure carbon (soot or ash). Additionally, any combustion in atmospheric air, which is 78% nitrogen, will also create several forms of nitrogen oxides.
This text uses material from Wikipedia, licensed under CC BY-SA
