METHOD OF APPROXIMATING TEMPERATURE FIELD OF WORKING MEDIUM IN FULL-SIZED INSTALLATION Russian patent published in 2009 - IPC G21C17/02 

FIELD: physics.

SUBSTANCE: invention relates to methods of controlling coolant of a nuclear reactor and can be used for approximating temperature field of working medium in heat exchangers and reactors. In the proposed method required local mass flow of a tracer in the working medium is determined after each elementary area at the inlet of the working section. The tracer is successively let into each elementary area at the inlet of the working section. An air sample is taken at the outlet of the working section and local concentrations of the tracer at the outlet of the working section are measured, corresponding to inlet of the tracer into different elementary areas at its inlet. Standardised local concentrations of the tracer at the outlet of the working section are added and the resultant local concentrations are obtained. The unknown local temperature of the working medium at the outlet of a full-sized installation is determined from an approximate relationship, which takes into account the ratio of the linear scale of the working section with respect to the full-sized installation, complete heat flow at the inlet of the full-sized installation, flow of the tracer at the inlet and concentration of the tracer at the outlet of the working section, specific heat capacity of the working medium at the outlet of the full-sized installation, density and average speed of the working medium at the outlet of the full-sized installation and working section.

EFFECT: wider functional capabilities, increased accuracy, reduced labour input for determining temperature field at the outlet of a full-sized installation.

9 cl, 4 dwg