Simple-cycle efficiency raised to entirely new level with the Wärtsilä 31SG engine
The now introduced Wärtsilä 31SG is sharpening the edges of value related to the Smart Power Generation features. The defining feature of the Wärtsilä 31SG is its ability to achieve simple-cycle efficiency levels in excess of 50 % (compared to around 40 % with modern gas turbines), which represents a milestone achievement in the energy sector.
In addition to reducing emissions, this higher efficiency offers the potential for considerable cost savings to power producers. Another huge benefit made possible by the Wärtsilä 31SG is the increased flexibility which enables rapid response to continuously changing load patterns, especially within systems having a notable share of solar and wind energy. The engine can be continuously operated at 10 percent load, and can reach full load in two minutes from the start command. This flexibility overcomes the challenge created by the daily stops and starts that are inevitable with output from renewable sources.
The 20-cylinder, spark-ignited Wärtsilä 31SG produces 12 MW of power. The specially designed robust engine structure has an unprecedented break mean effective pressure (BMEP) of 30 bar, allowing it to fully accommodate all the benefits of two-stage turbocharging.
On announcing the introduction of the Wärtsilä 31SG, Niklas Wägar, Director, Technology & Product Management, Wärtsilä Energy Solutions commented:
“The Wärtsilä 31SG is now available and represents a new generation answer to the rapidly evolving need for greater flexibility and better efficiency in power generation. It is the world’s most efficient 4-stroke combustion engine and it raises the bar in so many areas, including reliability and serviceability.”
Wärtsilä Energy Solutions in brief
Wärtsilä Energy Solutions is a leading global energy system integrator offering a broad range of environmentally sound solutions. Our offering includes ultra-flexible internal combustion engine based power plants, utility-scale solar PV power plants, energy storage & integration solutions, as well as LNG terminals and distribution systems. As of 2017, Wärtsilä has 65 GW of installed power plant capacity in 177 countries around the world.
Wärtsilä in brief
Wärtsilä is a global leader in advanced technologies and complete lifecycle solutions for the marine and energy markets. By emphasising sustainable innovation and total efficiency, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers. In 2016, Wärtsilä’s net sales totalled EUR 4.8 billion with approximately 18,000 employees. The company has operations in over 200 locations in more than 70 countries around the world. Wärtsilä is listed on Nasdaq Helsinki.