Upgrading Plains End II, the world’s largest natural gas-fired peaking power plant with reciprocating engines, to Wärtsilä’s 0.9% pre-chamber provided extra room for improved efficiency and stable emissions. In Wärtsilä 34SG engines, for example, pre-chambers are now an effective tool for optimising combustion dynamics, which can be seen in improved engine performance and a better balance between the heat rate and NOx emissions.
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