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Liquid biofuels production and emissions performance in gas turbines: A review

Chiong, Meng Choung and Chong, Cheng Tung and Ng, Jo Han and Lam, Su Shiung and Tran, Manh Vu and Chong, William Woei Fong and Mohd. Jaafar, Mohammad Nazri and Medina, Agustin Valera (2018) Liquid biofuels production and emissions performance in gas turbines: A review. Energy Conversion and Management, 173 . pp. 640-658. ISSN 0196-8904

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Official URL: http://dx.doi.org/10.1016/j.enconman.2018.07.082

Abstract

The increasing demand for clean and sustainable energy sources provides the impetus for the development of alternative fuels. Recent development of fuel-flexible gas turbine technologies enables the use of alternative non-fossil fuels that could play key roles in contributing to the global efforts in meeting emissions targets. This review highlights the current state-of-the-art production and properties of alternative fuels such as straight vegetable oil (SVO), biodiesel, bioethanol, bio-oil, hydrogenated vegetable oil (HVO) and Fischer-Tropsch (FT) fuel. This is followed by the evaluation of combustion performances in gas turbines. All of the alternative liquid biofuels have shown their potentials in reducing regulated emissions such as NOx, CO and soot under favourable operating conditions. Both HVO and FT fuels show comparable performance as that of jet fuel and can be used in aviation gas turbines, although the present day high production cost restricts the large-scale adoption, limiting its utility. They also have considerably higher cetane number than the rest, making it easier for the fuel to ignite. As for stationary power generation gas turbines that need not carry payloads, the other four alternative biofuels of biodiesel, bioethanol, bio-oil and SVO are possible candidates despite the physics-chemical properties variations when compared to fossil fuels. Amongst them, the use of SVO and bio-oil in gas turbines would require the parallel development of fuel supply systems and atomisation technologies to improve the combustion of the fuels. In all, the alternative liquid fuels reviewed provides realistic opportunities for cleaner and more sustainable operation of aviation and power generation gas turbines. Profound understanding on the fundamental combustion characteristics of the fuels are essential to expedite their mass adoption in gas turbine applications.

Item Type:Article
Uncontrolled Keywords:Alternative fuel, Biodiesel
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:84477
Deposited By: Widya Wahid
Deposited On:11 Jan 2020 15:31
Last Modified:11 Jan 2020 15:31

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