SUSTAINABLE STEEL CHIMNEY DESIGN FOR COMBINED HEAT AND POWER PLANTS

摘要

It is a well-established technique to separate in a chimney the duct function from the load-carrying function by means of a stainless steel liner. In Combined Heat and Power plants the liner is, depending on the operational design, exposed to more or less severe differential temperature effects. In order to get optimal benefit from the high corrosion- and heat-resisting properties of the stainless steel, the liner has to be structurally designed in a way that the thermal gradients cannot cause significant local buckling. Experiences from recent buckling damage case studies are transformed into a constructional methodology and concrete design recommendations. They are illustrated by an example.