CALORIMETER Russian patent published in 2019 - IPC G01K17/00 G01N25/20 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement of combustion heat of combustible substances in bomb calorimeters of variable temperature with calorimetric liquid. Calorimeter includes calorimetric shell (CS), equipped with cover (6) CS, calorimeter vessel (CV), fixedly installed in CS and equipped with cover (19) CV, calorimetric bomb (21) (CB) installed in CV, at least one element (25) of heating-cooling and magnetic drive installed on outer side of lower part of CS. In lower part of CS there is magnetic mixer (5) CS, and in lower part CV – magnetic mixer (17) CV, synchronously driven into rotation by magnetic drive (24). Cover (6) of the CS can be made with the possibility of providing liquid communication with the CS or contain at least one heating and cooling element (45). Calorimeter can additionally include dosing device for CV, containing dosing vessel (33), supply tank (28) and at least one element (36) of heating-cooling. Heating and cooling elements 25, 36, 45 are preferably Peltier thermoelectric modules.

EFFECT: efficient and fast alignment of CS and CV temperatures, minimization of evaporation of calorimetric fluid from CV, minimization of uncontrolled heat leaks from CV, efficient operation in isoperibolic and adiabatic modes regardless of ambient temperature with high accuracy of CS temperature control, potential dosing and cooling of liquid for CV, high measurement accuracy, shorter time between experiments (measurements), as well as lower requirements for laboratory space and no need to use external cooling devices.

10 cl, 3 dwg