METHOD OF DETERMINING THERMAL PROPERTIES OF PARTICLES OF SOLID MATERIALS Russian patent published in 2020 - IPC G01N33/24 G01V9/00 E21B49/00 G01N25/20 

FIELD: soil or rock drilling; mining.

SUBSTANCE: invention relates to investigation of thermal properties of rocks in unconsolidated state. In the method implementation, particles of solid material are ground, a mixture is made by mixing in a specified ratio ground particles of solid material with a filler material with known heat conductivity. Then mixture is pressed to its solid state, volume fractions of components of compressed mixture - air, particles of solid material and filler material are determined, effective heat conductivity of moulded mixture is measured and determining heat conductivity of particles of solid material from ratio connecting thermal conductivity of particles of solid material with effective heat conductivity of compacted mixture. Volumetric heat capacity of different aggregate materials is determined before mixture preparation. Filler material for making the mixture is selected from among the studied filler materials on the basis of data on their volume heat capacity by the criterion of minimizing the error of determining the volume specific capacity of particles of solid material. Volumetric ratios of particles of solid material and filler material in mixture are selected from criterion of minimization of error of determination of volumetric heat capacity of particles of solid material, effective volume heat capacity of pressed mixture of particles of solid material with filler material is measured. Thereafter, volumetric heat capacity of particles of solid material is determined from the ratio which connects the volumetric heat capacity of particles of solid material with the effective volume heat capacity of the pressed mixture of particles of solid material with filler material.

EFFECT: broader functional capabilities of the method of determining thermal properties of particles of solid material owing to high information content of the determination.

12 cl, 3 ex, 1 tbl, 2 dwg