METHOD OF EFFICIENCY ESTIMATION OF THE ANTI-TURBULENT ADDITIVE Russian patent published in 2018 - IPC G01N11/00 G01K13/02 G01N33/26 

FIELD: measurement technology.

SUBSTANCE: invention relates to the field of liquid hydrodynamics, in particular to the methods for evaluating the effectiveness of hydrodynamic resistance of hydrocarbon liquids, and can be used in order to create hydrodynamic benches for studying hydrocarbon fluids and testing additives for them that reduce hydrodynamic resistance. Method for estimating the effectiveness of an anti-turbulent additive is proposed, which is characterized in the fact that the measurements are carried out on a hydraulic bench, which provides for the turbulent flow mode of a hydrocarbon liquid and comprises the measuring section, at the input and at the output of which the temperature sensors are installed. In this case, the hydrocarbon liquid is circulated along the measuring section, while its temperature is recorded at the inlet and at the outlet of the measuring section, after which the anti-turbulent additive is introduced into the circulating hydrocarbon liquid, while its temperature is recorded at the inlet and at the outlet of the measuring section. Magnitude of the drop in resistance (DR) over the temperature difference at the measuring section is calculated according to the formula DR (%)=A(1-ΔT₀/ΔTp)*100, where A is the experimentally determined constant; ΔT₀ is the temperature difference of the hydrocarbon liquid (oil/oil product) without anti-turbulent additive at the inlet and outlet of the measuring section, °C; ΔTp is the temperature difference of the hydrocarbon liquid (oil/oil product) with the introduced anti-turbulent additive at the inlet and outlet of the measuring section, °C; and during the measurement the hydrocarbon liquid is heated or cooled so that its temperature differs from the ambient temperature.

EFFECT: process simplification of conducting the study in order to determine the magnitude of the decrease in hydraulic resistance (DR).

1 cl, 2 dwg