Page 47 - SD RATCH EN

Adaptation to Climate Change
Approach
Risk management
Opportunity creation
Assess and prevent impacts regarding water-stress areas
Develop renewable energy and biomass fuel
Activity
Assess organizational carbon footprint
Develop energy- saving technology and innovation, and
clean technology
Mitigate impact of climate vulnerability in production efficiency
Raise capacity building
Target
Preventive measures and investment plan
review
Renewable energy capacity of
2,500 MW in 2025
RATCH Group PCL.
Sustainability Report 2020
47
Commitment to reduce GHG at point source
Novel fuel-saving innovation for small power producers (SPPs)
Berkprai Cogeneration Power Plant is a small power producer (SPP) with capacity of 99.23 MW. Located in Tambon Berkprai, Ban Pong District, Ratchaburi Province, the power plant secures a 25-year Power Purchase Agreement. Holding a 35 percent stake in the power plant, RATCH invented a nouveau “Electricity and steam generation combined with 3 systems” that offers higher generation efficiency and lower heat rate or less fuel consumption compared to typical SPP power plants. With the technology, heat rate is efficiently maintained for both on-peak and off-peak periods, resulting in lower production cost and a significant decrease in GHG emissions.
The invention makes use of gas turbine, steam turbine and gas engine. Compared to the generally-used model for cogeneration power plants, the combined system replaces a gas turbine with 3 gas engines which allow greater flexibility and efficient support to Daily Start/Stop (DSS) as ordered by the customer (Electricity Generating Authority of Thailand).
Elements of Gas Turbine System for electric and steam generation
No.1 = Air Compressor
No.2 = Combustion chamber
No.3 = Gas Turbine
No.4 = Heat Recovery Steam Generator (HRSG)
Elements of Gas Engine System for electric and steam generation
No.6, 7, 8 = Gas Engine
No.9,10,11 = HRSG
Elements for steam Turbine System
No.5 = Steam Turbine
Electricity and steam generation combined with 3 systems at Berkpai Cogeneration Power Plant