| 摘要 |
FIELD: power industry.SUBSTANCE: jet-porous cooling method of heat-stressed elements, in compliance with which heat-insulated element is made in the form of a permeable plate separating cooling and heating media, which consists in the fact that cooling medium is supplied in the form of jets under pressure exceeding the pressure in flow of heating medium through microchannels of porous body of permeable plate. Additional perforated plate is installed at the specified distance from initial permeable plate on the side of cooling medium. Carrying capacity of initial permeable plate is higher than that of additional perforated plate. Cooling medium is supplied at the beginning under action of the same pressure difference between cooling and heating media through system of dosing openings of additional perforated plate, which leads to its jet ingress on heat release surface of initial permeable plate. Then, cooling medium is supplied in the form of jets to flow of heating medium at lower speed than speed of its leaving the dosing openings of additional perforated plate by passing through microchannels of porous medium of initial permeable plate.EFFECT: increasing cooling efficiency of heat stressed element; reducing the flow rate of cooling medium and reducing the pressure loss in heating medium flow.4 cl, 2 dwg |
