CALORIMETER Russian patent published in 2020 - IPC G01K17/00 G01N25/20 

FIELD: measurement technology.

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 external side of lower part CS. CS lower part accommodates magnetic mixer (5) CS, and in lower part of CV – magnetic mixer (17) CV, synchronously driven into rotation by magnetic drive (24). CS includes coaxial outer sleeve (1) CS, central cup (2) CS, internal cup (3) CS and mixer (5) CS, wherein middle sleeve (2) has smaller height than outer (1) and inner (3) cups, and in lower part of middle sleeve (2) there are holes for supply of liquid to suction cavity of agitator (5) CS. 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: calorimeter provides efficient and rapid alignment of CS and CV temperatures, minimized evaporation of calorimetric fluid from CV, minimized uncontrolled heat leaks from CV, efficient operation in isoperibolic and adiabatic modes regardless of ambient temperature with high accuracy of temperature control CS, possibility of dosing and cooling of liquid for CV, improvement of measurement accuracy, reduction of time between experiments (measurements), as well as absence of necessity to use external cooling devices.

10 cl, 3 dwg