Monitoring and Assessment of Energy Efficiency and CO2 Emissions from Cogeneration Power Plants

Jakrit Upakool, Prapita Thanarak


This research study focuses on biomass-based cogeneration power plants. Mechanisms have been adopted to promote and regulate project implementation of cogeneration power plants, to improve or increase their energy efficiency and to meet environmental standards, reducing both improve or increase their energy efficiency, and meet environmental standards, reducing local air pollution and CO2 emissions. This paper aims to identify the parameters to monitor and assess the improvement in energy efficiency and reduce CO2 emissions from cogeneration plants. A survey study was first conducted for ten sugarcane processing plants with SPP (10-90 MW) cogeneration plants in the central and northern regions of Thailand. The survey identified parameters that are used to monitor and control various plant operating conditions such as operating pressures, temperatures, and steam generation flow rates, including preventive maintenance plans to maximize the overall performance of the power plant. A field case study was then conducted for a 25 MW cogeneration power plant in Nakhon Sawan province. The case study involved analyzing the parameters used for monitoring and assessing the best practice operations of a co-generation power plant and evaluating the use of these parameters in analyzing the impacts on the energy efficiency and the CO2 emissions from the co-generation plant. The case study analysis showed that these parameters used for monitoring and controlling the operation of the co-generation power plants can also be used to monitor and assess the improvement in the energy efficiency of the power plants, and to assess the CO2 emission reductions achieved by the power plant.


Co-generation power plant; CO2 emission; Energy efficiency; Parameter to monitor; Power plant monitoring

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