HIGHLY EFFICIENT LIQUID MEDIUM WITH DISTRIBUTED NANOPARTICLES, METHOD AND DEVICE FOR MEDIUM PREPARATION, AND METHOD OF MEDIUM LEAK DETECTION Russian patent published in 2008 - IPC C09K5/12 B82B3/00 G01M3/20 G01N21/62 G21C17/02 

FIELD: technological processes.

SUBSTANCE: invention is related to highly efficient liquid medium with distributed nanoparticles for cooling of nuclear reactor as main material, with which the nanoparticles are mixed, to method and device for preparation of liquid medium and to method of liquid medium leak detection. Highly efficient liquid medium is a liquid natrium as the main material, in which the previously treated nanoparticles are evenly distributed for removal of oxide film on surfaces of nanoparticles. As nanoparticles, at least superfine nickel particles are used in the quantity of at least 10 million^-1. The methods of condition creation were developed, in which the nanoparticles do not have the oxide film on their surface. First, by removal of oxide film prior to mixing of nanoparticles with liquid natrium in atmosphere of hydrogen gas. Second, by removal of oxide film by means of addition and shaking of oxygen absorber before or after nanoparticles addition to liquid natrium. Third, by coating of nanoparticles surface with natrim atoms prior to creation of oxide film on their surface with the help of device, which consists of evaporating chamber, chamber of molecular beam and collector chamber, which are successively connected with each other. The prepared alternative liquid medium possesses high working characteristics at low cost.

EFFECT: addition of nanoparticles to mentioned liquid medium leads to sharp increase of light brightness.

20 cl, 9 dwg