FIELD: instrument making.
SUBSTANCE: valve includes metal radiator with cooling agent circulation channels, which is made in the form of a flat panel, on the surface of which there rigidly fixed are two parallel tubes with cooling agent circulation channels. One of the tubes is connected to liquid nitrogen source and the other one is connected to liquid helium source. Radiator and tubes are made from heat-conducting metal. Tubes can be located along one of diagonals of the radiator or can have the shape of creases passing along parallel sides of radiator and diagonal attaching those sides.
EFFECT: possibility of differentiating the thermal conditions in local zones of test plants for approximation of simulated temperature loads and achievement of thermal homogeneity of the surface.
3 cl, 2 dwg
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