Abstract
A description is given of a novel flow calorimetric cell. The calorimeter can work by both diathermic and compensated isothermic methods for constant and the scanning temperature conditions. Its main characteristic feature is an application of heat equilibrators directly controlled by a negative feedback loop in such a manner that the inlet temperature of reagents is always equal to the temperature of the calorimetric vessel independently of the flow parameters, thermal effects of the process investigated, temperature of the calorimeter, etc. As a result of such design the calibration constant does not depend on flow parameters even when using the classical simple diathermic method of measurements. A thermochemical verification of the calorimeter was made by performing enthalpy measurements for mixing in the methanol-water system at both constant and scanning temperature conditions.
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