Palm biodiesel spray and combustion characteristics in a new micro gas turbine combustion chamber design

Ibrahim I. Enagi, K.A. Al-attab, Z.A. Zainal and Yew Heng Teoh

Energy, 2022, vol. 254, issue PB

Abstract: Micro gas turbine (MGT) is one of the main candidates for green distributed cogeneration since it allows the utilization of wider range of renewable fuel sources. A new chamber geometry was designed and optimized for liquid biofuels combustion. Prior to the testing of the chamber, a cold-flow fuel atomization test rig was tested with different fuel injector sizes covering flow range of 50–200 ml/min. Spray characteristics of palm biodiesel were investigated and compared to diesel as the benchmark. The chamber was then tested with diesel fuel followed by biodiesel in a single-stage MGT configuration. Turbine inlet temperature (TIT) was limited below 900 °C to avoid damaging turbine blades, thus, limiting the operating gauge pressure below 0.6 bar. A Power turbine with high-speed alternator and heat recovery unit (HRU) were then added to the test rig in a combined heat and power (CHP) configuration. The lab-scale MGT-CHP system was fully characterized in the pressure range of 0.1–0.4 bar and achieved overall efficiency of 24.7% and total NOx emissions range of 22–70 ppm with palm biodiesel.

Keywords: Micro gas turbine; Palm biodiesel; Diesel fuel; Fuel atomization; Combustion characteristics (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:254:y:2022:i:pb:s0360544222012385

DOI: 10.1016/j.energy.2022.124335

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