Editing Calorimeter (section)

==Reaction calorimeters==

{{Main article|Reaction calorimeters}}
A reaction calorimeter is a calorimeter in which a [[chemical reaction]] is initiated within a closed insulated container. Reaction heats are measured and the total heat is obtained by integrating [[heat flow]] versus time. This is the standard used in industry to measure heats since industrial processes are engineered to run at constant temperatures.{{Citation needed|date=April 2018|reason=Which industry who says it's the standard?}} Reaction calorimetry can also be used to determine maximum heat release rate for chemical process engineering and for tracking the global kinetics of reactions. There are four main methods for measuring the heat in reaction calorimeter:

===Heat flow calorimeter===

The cooling/heating jacket controls either the temperature of the process or the temperature of the jacket. Heat is measured by monitoring the temperature difference between heat transfer fluid and the process fluid. In addition, fill volumes (i.e. wetted area), specific heat, heat transfer coefficient have to be determined to arrive at a correct value.  It is possible with this type of calorimeter to do reactions at reflux, although it is very less accurate.

===Heat balance calorimeter===
The cooling/heating jacket controls the temperature of the process. Heat is measured by monitoring the heat gained or lost by the heat transfer fluid.

===Power compensation===
Power compensation uses a heater placed within the vessel to maintain a constant temperature. The energy supplied to this heater can be varied as reactions require and the calorimetry signal is purely derived from this electrical power.

===Constant flux===
Constant flux calorimetry (or COFLUX as it is often termed) is derived from heat balance calorimetry and uses specialized control mechanisms to maintain a constant heat flow (or flux) across the vessel wall.