Abstract
This research put forth exergy-based economic and sustainability analyses of a (J85-GE-5H) military turbojet engine (TJE). Firstly, sustainability, conventional exergoeconomic and advanced exergoeconomic cost analyses were executed utilizing kerosene fuel according to real engine working circumstances. The engine was likewise investigated parametrically, considering H2 fuel utilization. The sustainable economic analysis assessment of the TJE was finally actualized by comparing the acquired outcomes for both fuels. The entire engine’s unit exergy cost of product (cPr) with kerosene was determined 76.45 $/GJ for the military (MIL) process mode (PM), whereas it was computed 94.97 $/GJ for the afterburner (AB) PM. Given the use of H2, the cPr increased to 179 and 288 $/GJ for the aforementioned two modes, seriatim. While the sustainability cost index (SCI) values were obtained 52.86 and 78.84 $/GJ for the MIL and AB PM, seriatim, they became 128 and 244 $/GJ when considering H2. Consequently, the higher exergy demolitions occurring in the afterburner exhaust duct (ABED) and combustion chamber (CC) sections led to higher exergy destruction costs in the TJE. However, the engine worked less cost efficient with H2 fuel rather than JP-8 fuel because of the higher cost value of fuel.
Highlights
Energy is an underlying phenomenon in thermodynamics and the production phase of energy is based on the notable applications of engineering examination
The higher exergy demolitions occurring in the afterburner exhaust duct (ABED) and combustion chamber (CC) sections led to higher exergy destruction costs in the turbojet engine (TJE)
The lowest SEF was reckoned in the CC section with the rate of 2.20 for the MIL process mode (PM), while it was computed to be 2.13 in the ABED section for the AB PM
Summary
Energy is an underlying phenomenon in thermodynamics and the production phase of energy is based on the notable applications of engineering examination. The systems which generate power are designed simple in order to convert energy into another. The increase in energy demand is directly proportional to technological development, population and economic growth. In this context, the increase in global warming and air pollution has become the focus of energy analysis because of post-combustion products released into the atmosphere [1,2,3,4]. In order to provide the basis for sustainable environment-friendly policies, the road map provided in the 2018 report predicts that fossil energy resources will provide a significant share in energy production by the 2040s [12]
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