heatproduction
Heat production is the generation of thermal energy within a system as a result of energy transformations. It is commonly described by the rate of energy release, or heat rate, measured in watts, while the total energy produced over time is given in joules or kilowatt-hours. Heat production can be intentional, as in heating, or a byproduct of other processes.
Common sources include exothermic chemical reactions (such as combustion), nuclear processes (fission and fusion), electrical heating
Heat production is governed by the first law of thermodynamics; the heat added to a system plus
Applications span residential and industrial heating, manufacturing, and energy systems. In power generation, heat from combustion