Research Papers: Energy Systems Analysis

Performances and Emissions Evaluation of a Microturbojet Engine Running on Biodiesel Blends

[+] Author and Article Information
Grigore Cican

Faculty of Aerospace Engineering,
Polytechnic University of Bucharest,
1-7 Polizu Street, 1,
Bucharest 011061, Romania
e-mail: grigore.cican@upb.ro

Valentin Plesu

Faculty of Applied Chemistry and
Materials Science,
Polytechnic University of Bucharest,
1-7 Polizu Street, 1,
Bucharest 011061, Romania
e-mail: v_plesu@chim.upb.ro

Marius Deaconu

Acoustics and Vibrations Laboratory,
National Research and Development Institute for
Gas Turbines—COMOTI,
220D Iuliu Maniu Avenue, 6,
Bucharest, Romania
e-mail: marius.deaconu@comoti.ro

Adina Toma

Gas Turbine Special Equipments,
Physics and Mechanical Testing Laboratory,
National Research and Development Institute for
Gas Turbines—COMOTI,
220D Iuliu Maniu Avenue, 6,
Bucharest, Romania
e-mail: adina.toma@comoti.ro

Mihaiella Cretu

Physical and Chemical Laboratory,
National Research and Development Institute for
Gas Turbines—COMOTI,
220D Iuliu Maniu Avenue, 6,
Bucharest, Romania
e-mail: mihaela.cretu@comoti.ro

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received October 2, 2018; final manuscript received January 24, 2019; published online April 10, 2019. Assoc. Editor: Omid Askari.

J. Energy Resour. Technol 141(7), 072003 (Apr 10, 2019) (12 pages) Paper No: JERT-18-1750; doi: 10.1115/1.4042718 History: Received October 02, 2018; Revised January 24, 2019

This paper analyzes the performances and the emissions of the JETCAT P80 microengine, when jet A jet A +  10% biodiesel (BD), jet A + 20% biodiesel, and jet A + 30% biodiesel are utilized as fuel, and to each of these combinations is added 5% of Aeroshell Oil 500. The performances will be assessed based on the engine speed, for the generated thrust force, the temperature in front of the turbine, and on the fuel flow. The paper will investigate the performances and the emissions generated by the four fuel blends burning when the engine is idle, at the cruise and at the max regime. This will be realized by maintaining each of these regimes for approximately a minute and a half. During the tests, the vibrations were monitored both radially and axially for the observation of the engine function regimes. From the measurements, the concentrations of SO2, NOx, and CH4 will be analyzed, highlighting the emissions of SO2. There were performed measurements to determine the fuel blend's density in order to transform the values of the fuel flow from liter per hour into kilogram per second. Having these data registered from the engine, a jet engine cycle analysis at max regime will be performed based on the combustion efficiency, the thermal efficiency of the engine, and the specific fuel consumption.

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Fig. 1

Jet CAT P80 test bench

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Fig. 2

The stand tests for emissions (a) and MRU (b)

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Fig. 4

Radial accelerometer (a) and axial accelerometer (b)

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Fig. 5

Variation of T3 (°C)

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Fig. 12

Variation of specific consumption

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Fig. 8

Vibration levels: (a) radial and (b) axial

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Fig. 7

Variation of force F (N)

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Fig. 6

Variation of Qc (m3/s)



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