September 10, 2025Jurnal Rekayasa MesinOpen Access

The Effect of Coal and Sawdust Co-Firing on Boiler Efficiency with the Direct and Indirect Calculation Methods at PT PLN Nusantara Power Unit 2

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Boiler efficiency reached 86.8% using direct method and 85.2% using indirect method.
Fuel blend of 55% low-rank coal, 40% medium-rank coal, and 5% sawdust was studied.
Co-firing technology with sawdust significantly lowers emissions compared to standard coal mixtures.
Findings support the use of biomass to achieve Indonesia's net zero emissions goal by 2060.

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Analysis reveals improved boiler efficiency and reduced emissions with co-firing technology in Indonesia.

Issafira et al. (2025) studied this question.

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