Operating Modes of Calorimeters

Most of the calorimeters may be used with different temperature control modes. 

The following temperature control modes are commonly used  

1) Isoperibolic means that the surroundings temperature is maintained constant. 

In order to determine the heat released by a reaction, the calorimeter can work using a simplified heat balance, as presented in Section 2.4.2. Many calorimeters are designed in such a way as to eliminate one of the three terms of the heat balance, in order to determine the heat release rate by measuring the other term. 

The totality of the heat released by the reaction under study must be converted into heat accumulation, that is, into a temperature increase, which can be measured. This is obtained by eliminating the heat exchange with the surroundings, achieving adiabatic conditions  

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