Abstract
The temperature regime for a damaged steam superheater cooling coil is investigated numerically. It is shown that continuing operation with a damaged element shortens the service life and initiates secondary damage with respect to the heat resistance of the outlet section. The closer the initial damage is to the end of the heated section, the greater the thermal nonuniformity in the temperature of the coolant and metal will be. This effect shows up in the form of a reduction in the flow rate of the coolant in the segment after the initial damage, with stagnation of the circulation as a limit. The operating time for a boiler with a damaged steam superheater must be reduced to a minimum.
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