Effects of Biofuel on the Performance and Emissions Characteristics of a Small Scale Gas Turbine

Habib, Zehra; Parthasarathy, Ramkumar N.; Gollahalli, S. R.

doi:10.2514/6.2009-827

Cited by 9 publications

(4 citation statements)

References 2 publications

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“…French K.'s paper [11] evaluated the performance of an SR-30 turbojet gas turbine engine powered by canola oil biodiesel. Habib et al [12] has tested different kinds of blends ranging from 50% to 100% (B50 and B100) volumetric blends of biodiesel and Jet A-1. The main conclusions of the study are that the ratio of thrust/specific fuel consumption was similar to that in the results of Jet A-1, the admission temperature was higher overall for biodiesel/Jet A-1 mixtures, and the temperature of the exhausted gases was not significantly different.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Use of Recycled Pork Fat-Based Biodiesel in Aviation Turbo Engines

et al. 2020

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This paper presents an analysis of the possibility of using recycled pork fat-based biodiesel as fuel for aviation turbo-engines. The analysis consists of the assessment of four blends of Jet A kerosene with 10%, 30%, 50%, and 100% biodiesel and pure Jet A that was used as reference in the study. The first part of the paper presents the physical-chemical properties of the blends: density, viscosity, flash point, freezing point, and calorific power. Through Fourier transform infrared spectroscopy (FTIR) analysis, a benchmark was performed on the mixtures of Jet A with 10%, 20%, 30%, 50%, and 100% biodiesel compared with Jet A. The second part of the paper presents the test results of these blends used for fuelling a Jet Cat P80 turbo engine at the Turbo Engines Laboratory of the Aerospace Engineering Faculty of Polyethnic University of Bucharest. These functional tests were performed using different operating regimes as follows: idle, cruise, intermediate, and maximum. For each regime, a testing period of around 1 min was selected and the engine parameters were monitored during the test execution. The burning efficiency was calculated for the maximum regime for all mixtures. To evaluate the functioning stability of the turbo engine using biodiesel, two accelerometers were mounted on the engine support that recorded the radial and axial vibrations. Moreover, to assess the burning stability and to identify other acoustic spectral components when biodiesel is used, two microphones were placed near the jet region. A comparative analysis between blends was made by taking the Jet A fuel as reference.

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Section: Introductionmentioning

confidence: 99%

Investigating the Use of Recycled Pork Fat-Based Biodiesel in Aviation Turbo Engines

et al. 2020

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“…Diesel/natural gas cocombustion experiments in diesel engines generally result in significantly lower CO2, NOx and PM emissions yet higher HC and CO emissions in comparison with regular diesel combustion [21]. Dual fuel experiments in gas turbine combustor conditions are often single phase blends of two different fuels [22][23][24][25]. However, in view of rising energy demands and the need to guarantee energy security, there will be increasing demand for gas turbines to demonstrate improved fuel flexibility in the context of dual phase fuel burn.…”

Section: Introductionmentioning

confidence: 99%

Visualisation and performance evaluation of biodiesel/methane co-combustion in a swirl-stabilised gas turbine combustor

Agwu

Runyon

Göktepe

et al. 2020

Fuel

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While dual fuel firing of power generation combustion systems can provide energy security by improving the fuel flexibility of such systems, several studies on compression ignition engines have also shown a positive impact on NOX and PM emissions. Previous multiphase fuel combustion studies for gas turbine engines are limited, thus the present study addresses that gap by fuelling a model swirl stabilised gas turbine combustor with a blend of waste cooking oil-derived biodiesel and methane. Increasing amounts of methane were injected into the swirling combustion air flow while simultaneously reducing the biodiesel spray flowrate across a pressure atomiser, thus maintaining an overall thermal power output of 15 kW and a global equivalence ratio of 0.7 in all cases, except for flame stability range trials. Direct flame imaging, C2* and CH* chemiluminescence imaging, post combustion emissions as well as stability performance of the flames were evaluated. Emissions results indicate a reduction in NOx emissions whereas unburned hydrocarbons emissions increased when the dual fuel tests were compared with neat biodiesel combustion with further reduction of these emissions as gas fraction in the fuel mix increases. Further, flame images suggest increased wrinkling and perturbing of the flame front as gas fraction of the biodiesel/methane flame increases. However, the temporal variation of integral intensity of C2* and CH* species chemiluminescence point to lesser fluctuation in the rate of heat release hence improved flame stability and reduced combustion noise as methane partially replaces biodiesel in the combustion process. Also, it was found that flame stability limits reduce as methane partly replaces biodiesel in the flame; an average of 17% decrement in lean extinction limit is observed as methane content of combusted fuel increases from 0 to 20%.

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“…GasTurb 11, a gas turbine performance simulation program developed by Kurzke [18]. An earlier build of GasTurb was utilized by Habib et al [14] when predicting the performance of 100% biodiesel after running experimental tests for 10, 20, and 30% biodiesel blends with petrodiesel. The list of GasTurb inputs used for the simulations for each test fuel is shown in Table 4, while Figure 14 shows the physical model of the simulated engine based on the specified inputs.…”

Section: Gasturb Analysismentioning

confidence: 99%

“…It was found that the maximum thrust achieved by the biodiesel was less than Jet-A by 8% at maximum rpm. Using a gas turbine engine of the same model as French [13], Habib et al [14] tested a variety of biodiesels and biofuels in 50% and 100% (B50, B100) volumetric blends with Jet A-1. In terms of thrust specific fuel consumption (TSFC), at higher rpm, the TSFC of all test fuels was not significantly different from that of Jet A-1.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of a Small-Scale Turbojet Engine Running on Palm Oil Biodiesel Blends

2014

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The experimental and simulated performance of an Armfield CM4 turbojet engine was investigated for palm oil methyl ester biodiesel (PME) and its blends with conventional Jet A-1 fuel. The volumetric blends of PME with Jet A-1 are 20, 50, 70, and 100% (B20, B50, B70, and B100). Fuel heating values (FHV) of each fuel mixture were obtained by calorimetric analysis. The experimental tests included performance tests for Jet A-1 and B20, while the performances of B50 to B100 were simulated using GasTurb 11 analytical software. In terms of maximum measured thrust, Jet A-1 yielded the highest value of 216 N, decreasing by 0.77%, 4%, 8%, and 12% with B20, B50, B70, and B100. It was found that B20 produced comparable results compared to the benchmark Jet A-1 tests, particularly with thrust and thermal efficiency. Slight performance penalties occurred due to the lower energy content of the biodiesel blends. The efficiency of the combustor improved with the addition of biodiesel while the other component efficiencies remained collectively consistent. This research shows that, at least for larger gas turbines, PME is suitable for use as an additive to Jet A-1 within 50% blends.

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Effects of Biofuel on the Performance and Emissions Characteristics of a Small Scale Gas Turbine

Cited by 9 publications

References 2 publications

Investigating the Use of Recycled Pork Fat-Based Biodiesel in Aviation Turbo Engines

Investigating the Use of Recycled Pork Fat-Based Biodiesel in Aviation Turbo Engines

Visualisation and performance evaluation of biodiesel/methane co-combustion in a swirl-stabilised gas turbine combustor

Performance Evaluation of a Small-Scale Turbojet Engine Running on Palm Oil Biodiesel Blends

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