SU1437696A1 - Differential calorimeter - Google Patents

Description

This invention relates to a calorimetry technique and can be used to measure the thermodynamic properties of petroleum and petroleum products,

The purpose of the invention is to improve the accuracy of measurements.

Figure 1 shows the calorimeter, which bends VID1 in FIG. 2, and the same, axial | section | on fig.Z - section aa on: fig, 2 on - section bb in figure 2; The calorimeter contains working and reference 1 and 2 calorimetric cams: measures with thermosensitive elements 3, which are located in a massive cylindrical block 4 in planes perpendicular to its axial line. Around the central block there is a thermal lens 5 on its side surface : thermal contact with the central unit and with the side surface of the leveling cylinder 6. Holes 7 are used to enter the working and reference cells into the calorimeter,

The calorimeter works as follows.

In the calorimetric cells placed the test and reference substances. Thermosensitive elements 3 register the thermal effects occurring in the test substance.

Thermal perturbations on the side surface of the leveling cylinder by the thermal lens 5 are evenly distributed over the entire side surface of the central unit. The end surfaces, due to the small area, have little effect. The shape of the thermal lens provides a large contact surface with the leveling cylinder, therefore, disturbances on its surface are well bridged, which leads to an increase in accuracy

measurements.

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. S s 5

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Claims (1)

A DIFFERENTIAL CALORIMETER containing symmetrically placed inside the alignment cylinder and connected to it through the thermal lens by a rug of the axis of the cylindrical block, the larger surface of the thermal lens in contact with the surface of the cylindrical block, and the smaller with the surface of the alignment cylinder, S * E Mo