The use of heat circulator for flammability in mesoscale combustor

Authors

  • Achmad Fauzan Hery Soegiharto University of Muhammadiyah Malang Jalan Raya Tlogomas, 246, Malang, Indonesia, 65144 Universitas Brawijaya Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145, Indonesia https://orcid.org/0000-0003-4310-2931
  • I Nyoman Gede Wardana Universitas Brawijaya Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145, Indonesia https://orcid.org/0000-0003-3146-9517
  • Lilis Yuliati Universitas Brawijaya Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145, Indonesia
  • Mega Nur Sasongko Universitas Brawijaya Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145, Indonesia

DOI:

https://doi.org/10.15587/1729-4061.2019.155347

Keywords:

micro-combustor, flammability, heat recirculation, liquid fuel, micropower generator

Abstract

The mesoscale combustor is a part of the micropower electric generator. The function of the mesoscale combustor is to convert hydrocarbon to become thermal energy through combustion reaction. It is difficult to maintain the flame stability of a mesoscale combustor due to its millimetre-scale size.

This study aims to determine the performance and recognize mesoscale combustor phenomena that have stainless steel heat recirculators. This study is to test the combustion characteristics of liquid and gas fuels in meso-combustors which use heat recirculator. The heat circulator is made of stainless steel tube with an inner diameter of 3.5. The parameters observed were flammability limits, temperature distribution and flame visualization.

It is confirmed that the stainless steel heat recirculator, is useful for liquid fuel preheating and evaporating inside of mesoscale combustor. The flame of liquid fuels can be stabilized at an equivalence ratio of 0.9 to 1.25, and up to about 900 centigrade Celsius. Thus recommend for liquid fuel micropower generator. It is noted that when the heat recirculator is too close to the flame, excessive flame cooling occurs and causes the flame extinguished. The meso-combustor, which has no heat recirculator, and designed for gas fuel only, can stabilize flame at an equivalence ratio of 0.7 to 1.5. It is also confirmed that the inaccurate selection of the material of thermal recirculator risks reducing the flame stability. It is important to note that when the gas fuel exits the storage tube, there is an expansion and a decrease in temperature which can affect flammability limits

Author Biographies

Achmad Fauzan Hery Soegiharto, University of Muhammadiyah Malang Jalan Raya Tlogomas, 246, Malang, Indonesia, 65144 Universitas Brawijaya Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145

Lecturer

PhD student

I Nyoman Gede Wardana, Universitas Brawijaya Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145

PhD, Professor

Department of Mechanical Engineering

Lilis Yuliati, Universitas Brawijaya Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145

Doctor of Technical Sciences, Associate Professor

Department of Mechanical Engineering

Mega Nur Sasongko, Universitas Brawijaya Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145

Doctor of Technical Sciences, Associate Professor

Department of Mechanical Engineering

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Published

2019-04-05

How to Cite

Hery Soegiharto, A. F., Wardana, I. N. G., Yuliati, L., & Nur Sasongko, M. (2019). The use of heat circulator for flammability in mesoscale combustor. Eastern-European Journal of Enterprise Technologies, 2(8 (98), 46–56. https://doi.org/10.15587/1729-4061.2019.155347

Issue

Vol. 2 No. 8 (98) (2019): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

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Copyright (c) 2019 Achmad Fauzan Hery Soegiharto

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