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In order to speed up the boiler start-up, especially from the cold state, the boiler evaporator may be flooded with hot water at the beginning of the process. The temperature of water supplied to the boiler evaporator through lower chambers of the boiler furnace chamber waterwalls will be found from the condition of equality between allowable stresses and circumferential thermal stresses on the edge...
The paper concerns the possibility of accelerating the start-up of a steam boiler with the natural circulation. Shortening the start-up time will reduce start-up losses, including support fuel consumption. The paper presents the start-up for boiler from the cold, warm, and hot states. Using the European Standard EN 12952-3 permissible heating and cooling rates were determined for thick-walled components...
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