STUDY ON CONDENSER BACKWASH SYSTEM IN GRATI COMBINE CYCLE

• Main Author: Burhanudin, Barnas
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/38832
• Institution: Institut Teknologi Bandung

Backwash condenser system problem has been studied in this thesis. When the condenser backwashing takes place at Grati combine cycle power plant, it’s condenser vacuum pressure increases. This condition causes combine cycle power plant operator must reduce the turbine load to avoid the steam turbine interference / TRIP on electricity generation as a result of the increase in vacuum pressure. Studies discussed in this thesis a backwash process solutions that do not cause a decline in the production of power from steam turbine with two solutions. The first solution is to create a line by-pass condenser inlet. The second solution is to install one additional of circulating Water Pump (CWP) to two existing pumps. The study results showed that the first solution is more optimal because it has pump head of 12.21 m a little bit lower than it’s normal operating condition of 12.84 m. A financial study shows that payback periode for this solution is 6 months, for second solution is 3 years and 1 months for 20 year lifetime. An operational study shows that the first solution has better result is 9.1 and 6.4 for second solution.