ENGINEERING JOURNAL CHIANG MAI UNIVERSITY

Volume 26, No. 03, Month DECEMBER, Year 2019, Pages 77 - 87

Performance improvement of mae moh power plant unit 12 by adjusting of feed water heater at the capacity of 240 mw and 180 mw

Khomkrit Mongkhuntod and Chatchawan Chaichana

Abstract Download PDF

Mae Moh Power Plant Unit 12 is a coal fired power plant capacity of 300 MW. It has been operated more than 20 years. The major equipment has degraded from this reason. The high pressure and low pressure steam turbine has been change for new one to improve plant efficiency. From this improvement, heat rate is better than that of before period by 0.85%. Then, it has the research about increasing the extraction steam flow from turbine to heat up in feed water heater in case of 300 MW power plant capacity. The result is decrease the heat rate about 0.116%. In this research focus on increasing the extraction steam flow from turbine to heat up in feed water heater in case of 240 MW (80% Load) and 180 MW (60% Load). The result at 80% load is decreasing the heat rate by 0.1% and at 60% load is decreasing the heat rate by 0.07%.

Keywords

Feed Water Heater, Power Plant Efficiency, Heat rate

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