Table of Contents
What state does fuel have to be in to burn?
A/ Flaming Combustion Chemically, it is a gas-to-gas reaction, meaning that the fuel has to be in the gaseous state in order to react with the oxidizer, which is already in the gaseous state. This is a very important concept because liquids and solids do not burn in an open flame, only their vapors do.
What are three important things needed for combustion to occur?
Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.
Why is perfect combustion never obtained?
In reality, combustion processes are never perfect or complete. In flue gases from combustion of carbon (as in coal combustion) or carbon compounds (as in combustion of hydrocarbons, wood etc.) both unburned carbon (as soot) and carbon compounds (CO and others) will be present.
What is necessary for complete combustion of fuels?
Complete combustion needs a plentiful supply of air so that the elements in the fuel react fully with oxygen. Fuels such as natural gas and petrol contain hydrocarbons. These are compounds of hydrogen and carbon only.
What is potential fuel for a fire?
Potential ignition sources are those where sources of heat could get hot enough to ignite material found in the premises. These sources could include: Smokers’ material – such as cigarettes, matches and lighters. Naked flames – such as candles or gas open-flame equipment.
Can burning take place without oxygen?
A fire cannot burn without oxygen. The burning that a star does, then, is a nuclear reaction, and not a chemical one like the fires on Earth (when a candle burns, the atoms themselves remain unchanged: just the molecules are affected).
What are the sources of fuel to create fire?
Fuel. In order for a fire to start there must be a material to burn – and this is referred to as the fuel. Fuel is any kind of combustible material, including paper, oils, wood, gases, fabrics, liquids, plastics and rubber.
When a fuel is burned any carbon that does not undergo combustion can be released as particles?
Incomplete combustion happens when the supply of air or oxygen is poor. Water is still produced, but carbon monoxide and carbon are produced. Less energy is released than during complete combustion. The carbon is released as fine black particles .
Which gas is produced when fuel burns insufficient supply of air?
Carbon monoxide gas
(b) Carbon monoxide gas is formed, when a fuel burns in insufficient supply of air.
Is fuel any flammable substance?
Liquids (such as petrol and other fuels) and solvents in industrial products (such as paint, ink, adhesives and cleaning fluids) give off flammable vapour which, when mixed with air, can ignite or explode.