| A | B |
|---|
| latent heat | heat identified by a change of state and not temperature change of the substances |
| sensible heat | heat that can be measured by a thermometer or sensed by a person |
| British thermal unit | amount of heat energy required to raise the temperature of one pound of water 1°F |
| heat exchange | anything that transfers heat from one substance to another without allowing the materials to mix |
| conduction | heat transfer that occurs when molecules in a material are heated and the heat is passed from molecule to molecule through the material |
| convection | heat that occurs when currents circulate between warm and cool regions of a fluid |
| radiation | heat transfer that occurs as radiant energy |
| combustion | the rapid union of oxygen with an element or compound that results in the release of heat |
| perfect combustion | combustion that occurs when fuel is burned using only the theoretical amount of air |
| complete combustion | combustion that occurs when all fuel is burned using the minimum amount of air above the theoretical amount of air required to burn the fuel |
| MATT | an easy way to remember complete combustion |
| MATT-mixture | mixture of air and fuel, which must be maintained at the proper ratio at all firing rates |
| MATT-atomization | atomization of fuel oil: the breaking up of fuel into small particles to maximize contact of fuel with air for combustion efficiency |
| MATT-temperature | temperature: the proper temperature of the air, fuel, and furnace must be maintained for complete combustion |
| MATT-time | time required to achieve complete combustion |
