Table of Contents
combustion-and-flames
In combustion, a substance reacts with oxygen to produce heat and light. The most common example of combustion is the burning of a fuel, such as gasoline, in an engine. In the engine, the fuel is mixed with air and then ignited. The heat from the combustion reaction causes the engine to run.
Flames are created when the heat from combustion is intense enough to cause the gas in the air to ignite. Flames are usually hot enough to cause materials to combust and start burning.
What is Combustion?
Combustion is a chemical reaction that occurs when a fuel is combined with oxygen. The result is the release of heat and light. The most common example of combustion is the burning of a match.
Combustible and Non-Combustible Substances
A combustible substance is a material that can easily ignite and create a fire. Common combustible materials include wood, paper, and fabric. A non-combustible substance is a material that does not easily ignite and does not create a fire. Non-combustible materials include glass, metal, and plastic.
Fuel
Cell
A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction of positively charged hydrogen ions with oxygen ions from the air. Fuel cells are different from batteries in that they require a continuous source of fuel and oxygen to run, and do not store energy.
Fire
thorn
A thorny shrub or small tree, typically with red berries.
“The hedge was full of firethorn, the prickly branches scratching at my skin.”
A Fire Can Only Be Generated If
There Is A Fuel
A fire can only be generated if there is a fuel.
Types of Combustion
There are four types of combustion:
1. Homogeneous combustion
2. Heterogeneous combustion
3. Diffusion combustion
4. Flame combustion
What is Flame?
Flame is a computer virus discovered in May 2012 that attacks Microsoft Windows operating systems. It is a variant of the earlier malware, Stuxnet. Flame is believed to be a state-sponsored cyberweapon used for espionage.
Fire Control
The Mk 45 Mod 0 is a manually operated, turret-mounted gun. It has a crew of nine: the gunner, the assistant gunner, the loader, and five crewmen to operate the turret and feed the ammunition. The Mk 45 Mod 0 can fire at a rate of up to 15 rounds per minute.
Calorific Value of a Fuel
The calorific value of a fuel is the amount of heat energy released by the complete combustion of a unit of fuel. The calorific value is usually expressed in terms of the amount of heat released per unit weight of fuel (i.e. per kg or per lb), but it can also be expressed in terms of the heat released per unit volume of fuel (i.e. per litre or per gallon).
The calorific value of a fuel is determined by the chemical composition of the fuel. The higher the calorific value of a fuel, the more heat energy it will release when it is burned.
The calorific value of a fuel can be used to determine the amount of heat energy that will be released when the fuel is burned. This information can be useful when designing heating systems, or when calculating the amount of fuel that will be needed to achieve a desired level of heat energy.
