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Article | REF: BE8732 V1

Power, waste, biomass and recovery boilers

Authors: Markus HAIDER, Philippe SEGUIN

Publication date: October 10, 2012

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2. Pace variations and transients

2.1 Variable load operation

To understand how a boiler, and more generally a thermal power plant, operates at variable speeds, several phenomena need to be taken into account.

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2.1.1 Steam pressure as a function of speed

According to Stodola's law, steam pressure at the inlet to a condensing turbine varies linearly with steam flow. The natural and logical characteristic of a steam cycle would therefore be that steam pressure in the boiler varies with plant load. This is known as "sliding pressure"...

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