Design and Characteristics of a New Pre-Evaporation Chamber Geometry for Low-Grade Palm Oil Fuel Evaporation for Micro Gas Turbine Application

Authors

  • Mohammed Raad Abdulwahab Northern Technical University, Technical College of Mosul, Mosul, Iraq
  • Khaled Ali Mohammad Al-attab School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia
  • Mohamad Yusof Idroas School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia

DOI:

https://doi.org/10.37934/arfmts.94.2.184199

Keywords:

Pre-evaporation chamber, combustion, palm oil, MGT, evaporation rate

Abstract

Recent increase in fuel prices, greenhouse emissions, global warming issue, as well as future predictions regarding fossil fuel depletion concerns have prompted widespread research on carbon-neutral renewable liquid biofuels as an alternative of petroleum fuels. In the present study, a numerical approach was used to design and optimize a novel design of pre-evaporation chamber, to pre-evaporate crude palm oil fuel using exhaust gas recycling to allow partially premixed fuel vapors to be introduced to the main combustion chamber. Discrete Phase Model (DPM) and species non-premixed model used in ANSYS-FLUENT software to simulate fuel evaporation. The pre-chamber optimization included the addition of variable number of revolve geometry to the walls to induce turbulence and to enhance the cyclonic motion caused by the tangential hot exhaust gas inlets with different fuel injection configurations. The number of revolves was varied in the range of 5-8 and diameter range of 40-90 mm with three injector configurations. The results revealed that the optimum chamber geometry consist of 7 revolves with 70 mm diameter with fuel evaporation rate about 0.0023kg/s and fuel evaporation percentage about 89%. Increasing the exhaust gas temperature from 950 °C up to 1050°C did not show a significant fuel evaporation enhancement. Results also showed that the evaporation enhancement is proportional to the number of fuel injectors where evaporation increased gradually from 73% to 89% when increasing number of injectors from 1 to 3.

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Author Biographies

Mohammed Raad Abdulwahab, Northern Technical University, Technical College of Mosul, Mosul, Iraq

mohammedalsafar@student.usm.my

Khaled Ali Mohammad Al-attab, School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia

khaled@usm.my

Mohamad Yusof Idroas, School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia

meyusof@usm.my

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Published

2022-04-28

How to Cite

Mohammed Raad Abdulwahab, Khaled Ali Mohammad Al-attab, & Mohamad Yusof Idroas. (2022). Design and Characteristics of a New Pre-Evaporation Chamber Geometry for Low-Grade Palm Oil Fuel Evaporation for Micro Gas Turbine Application . Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 94(2), 184–199. https://doi.org/10.37934/arfmts.94.2.184199

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