On-Line Estimation of Heat Capacity of Process Fluids using Dynamic Excitation of Temperature

In process control involving energy balances the heat capacity of the process fluid is needed. Although many methods for accurate heat capacity measurements are available for the laboratory, an instrument for online heat capacity measurement has yet to be developed. This paper presents such a method of online heat capacity measurement. The method is optimized with respect to the design, and a preliminary statistical analysis shows measurement accuracy is within several precent.