The control design optimization of boiler mini plant in the workshop laboratory scale based on ratio control

Safira Firdaus Mujiyanti*, Totok Soehartanto, Dionsius Andy Christanto, I. Putu Eka Widya Pratama

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


A boiler is one of the crucial plants in the industry used to the combustion process. Due to its significant use, this boiler is designed on a workshop laboratory scale which aims for learning facilities. Three things that must be present in the combustion process are fuel, air and ignition. This boiler mini plant uses kerosene as fuel. Kerosene as a fuel in the combustion process has some disadvantages. The first, these disadvantages are the kerosene has a high price because of its rare existence. Second, kerosene is a liquid fuel that has lower heat energy than gaseous fuel, with HHV (High Heating Value) is 46,2 MJ/Kg and LHV (Low Heating Value) is 41,5 MJ/Kg. This fuel and air mass must be control to optimize this combustion process, commonly known as AFR (Air Fuel Ratio). Unbalanced values between air and fuel can be detrimental to this process, such as unreachable temperature to generate steam or hazardous exhaust gases. Based on this weakness of the boiler system, this research will propose the control design optimization of the boiler mini plant-based on ratio control. Boiler mini plant designed on the workshop laboratory scale. Due to the aim of the boiler mini plant as the combustion process, the control system must be designed in this plant. The control design optimization is the aim of this research based on ratio control. There are two methods in this research, use the calculation and simulate in HYSYS software. The result of the validation of the two methods proposed is 0.83%. The dynamics parameters from this response are 31.52 seconds of settling time, 7.03 seconds of rising time and 10.49% of maximum overshoot. From that result, the ratio control of the boiler mini plant has been successfully designed with AFR 21.9.

Original languageEnglish
Title of host publicationEngineering Physics International Conference 2021, EPIC 2021
EditorsAyodya Pradhipta Tenggara, Nur Abdillah Siddiq, Sita Gandes Pinasti, Rizki Insyani, Jundika Candra Kurnia, Geetali Saha, Rasool Moradi-Dastjerdi
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735444843
Publication statusPublished - 22 May 2023
Event3rd Engineering Physics International Conference, EPIC 2021 - Yogyakarta, Virtual, Indonesia
Duration: 24 Aug 202125 Aug 2021

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference3rd Engineering Physics International Conference, EPIC 2021
CityYogyakarta, Virtual


  • Air Fuel Ratio (AFR)
  • Boiler
  • Ratio control


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