Abstract
This paper proposes a study regarding the use of bioethanol as fuel for turbine engines used in aviation. For this purpose, three blends of 5, 10, and 15% concentrations of bioethanol mixed with Jet A fuel were tested on JET CAT P80 microturbo engine. During the engine testing, the following parameters were monitored: engine speed, generated force, temperature in front of the turbine, fuel volumetric flow rate, and vibration levels measured both on axial and radial direction. The tests were performed by maintaining the microturbo engine for about 1 min at three operating regimes: idle, cruise, and maximum speed. In addition, a comparative analysis between fuels for a test with the microturbo engine from the idle position to maximum position is presented. After the tests were conducted, a jet engine cycle analysis was performed at the max regime and the fuel specific consumption, the efficiency of the combustion chamber, and the thermal efficiency of the engine for each fuel blend were calculated. The tests were made without making any modifications to the engine components or automation system.
Highlights
An important issue for our society is related to the chemical pollution generated especially by the burning of fossil fuels [1]
Studies in the related literature revealed that the use of ethanol especially bioethanol reduces the emissions resulted from the burning process of the fossil fuels
The results obtained in this study highlight that bioethanol, in the studied proportions, could be considered a stable alternative fuel for turbine engines without making technological and functional modifications of the engine
Summary
An important issue for our society is related to the chemical pollution generated especially by the burning of fossil fuels [1]. Among the main fossil fuel consumers, it is well known that aviation industry consumes very large amounts of fossil fuel [2], which inevitably sometime will be ended. There are many studies regarding the harmful effects of the fuel burning. Intense policies were developed to replace the crude oil with other sustainable fuel types for thermal engines, especially in the field of aviation, in order to diminish the chemical pollution [3,4]. The main policy is the directive for the development of new aviation fuels, e.g., biodiesel, ethanol, and bioethanol [5-7]. Ethanol and bioethanol are widely used in piston engines by using the E85 [8]. Bioethanol produced by alcoholic fermentation of various feedstocks, e.g., energy crops, agroindustrial wastes, algal biomass, is a valuable source of energy and materials [9-13]
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