value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it. The...

whose combustion then supplies the heat required to produce more of them. Combustion is often hot enough that incandescent light in the form of either...

insulators that prevent the escape of heat causing the temperatures of the material to rise above its ignition point. Combustion will begin when a sufficient...

external combustion engine (EC engine) is a reciprocating heat engine where a working fluid, contained internally, is heated by combustion in an external...

mechanical heat engine, in which heat from the combustion of a fuel causes rapid pressurisation of the gaseous combustion products in the combustion chamber...

vessel wall. A bomb calorimeter is a type of constant-volume calorimeter used in measuring the heat of combustion of a particular reaction. Bomb calorimeters...

advantage of heat engines is that most forms of energy can be easily converted to heat by processes like exothermic reactions (such as combustion), nuclear...

internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber...

enthalpy of reaction, if initial and final temperatures are equal). A related term is the heat of combustion, which is the energy mostly of the weak double...

of heat or for use in a heat engine, the relevant quantity is the change in standard enthalpy or the heat of combustion. There are two kinds of heat of...