METHOD FOR DETERMINING THERMAL HYDRAULIC CHARACTERISTICS ALONG SECTION OF HEAT-PRODUCING ASSEMBLY Russian patent published in 2010 - IPC G21C17/22 

FIELD: power industry.

SUBSTANCE: invention is intended for determining thermal hydraulic characteristics (THC) along section of assembly and can be used for determining parametres of single-, double-phase flows in heat-producing assemblies of various purpose. A cell is taken in the check section of the assembly; difference of static pressures is measured till sample cell is formed on the wall of channel and on simulator of fuel elements on the side of cell under investigation. Sample cell is formed in check section by installing a sampler into the cell under investigation, which is identical as to the shape to the cell under investigation; difference of static pressures is measured after sample cell is formed. Sampling tube is connected to sample cell; pressure drop is measured between sample cell in check section and sampling section. Heat carrier is taken through the sampling tube, and THC are measured in the taken sample. At that, check section of assembly is chosen outside its active part, sample cell is pre-formed by installing a grid, and as the parametre characterising the cell state before and after sample cell is formed and sampling tube is connected, there used is total pressure in the cell centre.

EFFECT: improving measurement accuracy of thermal hydraulic characteristics along section of heat-producing assembly.

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