Laboratory calorimeters have become an integral part of the labs of a number of industries, especially chemical, pharmaceutical, and manufacturing, construction and agriculture. In few of our previous posts, we have discussed about what laboratory calorimeters are and how they work. In this post, we would be exploring their advanced types as developed by manufacturers today to cater their growing tests and experiments needs in terms of accuracy and outcomes.
An adiabatic calorimeter is the calorimeter that is used for examining the runway reaction. It is heavily used in different industries. Since the calorimeter functions in an adiabatic setting, any heat produced by the material sample in test results in sample to increase in temperature and thus accelerating the reaction.
Adiabaic calorimeter is not completely adiabatic, and some heat is wasted by the sample to the sample holder. A mathematical correction factor called the phi-factor, can be utilized for adjusting the calorimeter outcome to count for the heat losses. The phi-factor is the ratio of the thermal masse of the sample and sample holder to the thermal mass of the sample only.
The reaction calorimeter is the one in which chemical reaction is started in a closed insulated container. Reaction heats are gauged and the total heat is got by integrating the heat flow versus time. This is the standard executed in industry for measuring heats because industrial processes are also engineered to run at constant temperatures. Reaction calorimeters are also used for determining maximum heat release rate for the chemical process engineering and for tracking the global kinetics of the reactions.
Power compensation calorimeter
Power compensation calorimeter uses the heat put in the vessel for maintaining a constant temperature. The energy given to the heater can be different as reactions need and the calorimetry signal is completely obtained from this electrical power.
Keep in your mind that all these calorimeters that have been discussed in this post are for industrial and commercial purposes and designed for large scale experiments and tests.