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Coal to Natural Gas Electric Utilities Repowering: Consequences for Valve Usage and Replacement

US power generating plants are converting from coal to other fuels in large numbers. In some cases the existing infrastructure is (to the extent possible) retained, with only the combustible material being altered. In the “middle” are plants that "repower" by using an existing turbine to run on steam from a heat recovery steam generator (HRSG) that draws (recycles) exhaust heat from a new gas turbine, together forming a combined cycle. At the other end of the scale are newly constructed power plants, which are predominantly gas-fueled. Each of these three repowering alternatives requires a different quantity of new valves, often of varying types.

Revision Date:  9/10/2014

Tags:  221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Crane, Valve, Repower, Fuel Switching