Define the following terms. a. fuel b. Combustion c. Ignition temperature d. Calorific value
Answers
a) the materials which give heat
b) burning a material in presence of oxygen
c) the material which has least temperature means which burnt like petrol
d) the heat energy produced by fuel according to the material and it's quantity
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fuel
1.
material that is burned to produce heat or power.
Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer. The fuel can be a solid, liquid, or gas, although for airplane propulsion the fuel is usually a liquid.
The autoignition temperature or kindling point of a substance is the lowest temperature in which it spontaneously ignites in a normal atmosphere without an external source of ignition, such as a flame or spark. ... The ignition temperature of a substance is the least temperature at which the substance starts combustion.
the energy contained in a fuel or food, determined by measuring the heat produced by the complete combustion of a specified quantity of it. This is now usually expressed in joules per kilogram.