Similar to a jet engine. A result of combustion is expanding gases that drive turbine blades connected to a generator.

A combustion chamber is part of an internal combustion engine in which the fuel/air mix is burned.

Combustion is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.

A combustible material is something that can combust (burn) in air.

Combined cycle gas turbine plants have two or more cycles, the first of which is very similar to a peaking plant, with the second running on the waste heat of the first.

A heat pump system that has the ability to heat or cool air at full capacity or to heat or cool water at full capacity, but not both at the same time.

In distributed generation projects such as a wind farm or photovoltaic power station, a collector substation may be required.

Cold forming or cold working is any metalworking process in which metal is shaped below its recrystallization temperature, usually at the ambient temperature.

A cold shield is a device to protect an object from unwanted heating by thermal radiation or light.

Cold filter plugging point is the lowest temperature, expressed in degrees Celsius (°C), at which a given volume of diesel type of fuel still passes through a standardized filtration device in a specified time when cooled under certain conditions.

Coking is the heating of coal in the absence of oxygen to a temperature above 600 °C to drive off the volatile components of the raw coal, leaving a hard, strong, porous material of high carbon content called coke.

Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air.

In electrical engineering, coil winding is the manufacture of electromagnetic coils.

Heat pipes are a heat recovery device that use a multi-phase process to transfer heat from one airstream to another. Heat is transferred using an evaporator and condenser within a wicked, sealed pipe containing a fluid which undergoes constant phase change to transfer heat.

The amount of heat that must be rejected to the earth in the cooling mode to provide cooling to the space.

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

When heating a building the heat loss is the total number of btu's that a system needs to extract from elsewhere or produce through combustion or resistance.

Heat load is a calculation that identifies both the heat gain and the heat loss.

When cooling a building the heat gain is the amount of btu's a system must be able to reject elsewhere.

A heat flux sensor is a transducer that generates an electrical signal proportional to the total heat rate applied to the surface of the sensor.