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Higher Plant Efficiency

Higher plant efficiency means:
Primarily,
- Less Fuel Consumption
- Less Infrastructure Investment for Fuel Transport / Storage and Ash Disposal
But Also,
- Less Emission (CO2, SOx, NOx, Dust/Ash)
- Less Auxiliary Power Consumption
- Less Water Consumption (No need of continuous blow down in case of once-through boiler.)

Elevated Steam Conditions

As the steam conditions become higher, plant heat consumption becomes less. To this date, even 600/600 degree C (both superheater outlet and reheater outlet temperature are 600 degree C) is already in operation.

REFERENCE UNITS

Sliding Pressure Operation

Comparison of Typical Operation Modes
By adopting sliding pressure operation (more precisely, combined operation of constant and sliding pressure operation), plant efficiency becomes higher at partial load range.
- Higher HP turbine internal efficiency.
- Less BFP power consumption.
- Higher reheat steam temperature at partial load.

Fully Fired Combined Cycle

Gas turbine repowering system is a way to increase the output and plant efficiency of boiler plant by adding gas turbines. Gas turbine repowering is applicable not only to oil or gas firing boilers, but also to coal firing boilers.
Recent Experience
  Before Retrofit Before Retrofit
Fuel Natural Gas, Heavy Oil Natural Gas, Heavy Oil
Gas Turbine : Natural Gas
Generator
Output		 Steam Turbine : 375 MW Gas Turbine : 154 MW
Steam Turbine : 375 MW
Total : 529 MW (41 % up)
Plant
Efficiency		 Base 12 % up (relative)
Business contact: Network

Business Segment: Power Systems
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