Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science


DOI: 10.5937/jaes0-44064 
This is an open access article distributed under the CC BY 4.0
Creative Commons License

Volume 22 article 1166 pages: 38-54

Djarot B. Darmadi*
Mechanical Engineering Department, Faculty of Engineering, Brawijaya University, Malang, Indonesia

Nurdin Hasananto Teguh
Mechanical Engineering Department, Faculty of Engineering, Brawijaya University, Malang, Indonesia

Lilis Yuliati
Mechanical Engineering Department, Faculty of Engineering, Brawijaya University, Malang, Indonesia

Eko Siswanto
Mechanical Engineering Department, Faculty of Engineering, Brawijaya University, Malang, Indonesia

Marco Talice
PMSQUARED Engineering S.r.l.s, Cagliari, Italia

The primary-secondary air ratio is believed to impact both the combustion process and the overall performance of a power plant. This study aims to investigate how an increase in the primary-secondary air ratio affects the performance of a power plant located in north Gorontalo, South Sulawesi, Indonesia, using a GateCycle model. We conducted simulations of 48 variations based on three primary-secondary ratio values (PA-SA) to determine the optimal proportion of PA-SA. Our findings indicate that the optimal PA-SA ratio under stoichiometric conditions was 25-75%, resulting in a total cost of 108.03 million Rupiah per hour with a fuel burn rate of 22756 kg/h. When operating with 10% excess air, the optimal PA-SA ratio remains 25-75%, and the fuel flow and total cost were 22947 kg/h and 108.94 million Rupiah, respectively. Similarly, under 20% excess air, the optimal PA-SA ratio was also 25-75%, with a fuel flow rate and total cost of 23144 kg/h and 109.87 million Rupiah, respectively.

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This paper has been carried out with the support of the PMDSU (Pendidikan Magister menuju Doktor untuk Sarjana Unggul – Magister to Doctor for the high-quality Bachelors Degree) Batch V 2019. The authors intend to express their gratitude to the reviewers for their insightful and valuable comments on this manuscript.

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