Optimization Of Time And Water Flow Rate By Opening The Bleed Heating Inlet Valve In The Offline Gas Turbine Rinsing Process

Abstract

Combined Cycle Power Plant PT. Krakatau Chandra Energy requires good performance to serve its consumers . To get good performance, a water wash is carried out to clean the dirt (Fouling) that sticks to the gas turbine compressor blade so that it is clean again, so that the pressure and temperature of the compressor outlet air (CPD) increases and improves its performance according to design. During the water washing process there are cost inefficiencies . The research objective is to reduce the duration of the gas turbine rinsing water wash by modifying the IBH (inlet bleed heating) drain path. According to its function, it draws compressor output air and directs it to the compressor and increases the temperature of the compressor inlet air by mixing cold ambient air with hot compressor exit air, thereby reducing the density and mass of air to the gas turbine. This process is carried out when the gas turbine stops by making modifications/changes to the gas turbine IBH drain line. The identification results were obtained during the long rinsing water wash process, because the IBH drain was not used in the process. By modifying the gas turbine IBH drain, the duration is expected to be 184.33 minutes. fast. The test is to analyze each decrease in conductivity based on the manual book, namely with Δ result conductivity (water conductivity demin tank - exhaust plenum output water conductivity ) at 5 μ s/c m.

Keyword: Gas turbin, IBH (Inlet Bleed Heating), Rinsing, Water wash