EXERGETIC SUSTAINABILITY ASSESSMENT OF A GAS TURBINE JET ENGINE AT PART LOADS
Abstract
A
small-scale gas turbine jet engine was studied to compare the sustainability
performances at different part loads. To assess the performance of the jet
engine, experiments are conducted at four different part loads (part load-1,
part load-2, part load-3 and part load-4). According to the load types, the
energy and exergy rates of the engine components were investigated.
Sustainability indicators were used to analyze the jet engine. Parameters such
as exergy efficiency, waste exergy ratio, exergy destruction factor,
environmental effect factor and exergetic sustainability indicator were studied
to understand the effects of four load types. The compressor, combustion
chamber, turbine and nozzle are investigated. The maximum exergy efficiency of
the jet engine took place at part load-3 as 7.8%. The minimum waste exergy
ratio (0.9) and exergy destruction factor (0.9) were calculated at part load-4.
The minimum environmental effect factor and maximum exergetic sustainability
factor belong to part load-3 case. They were found to be 12.029 and 0.0831,
respectively. The maximum exergy destructions were observed in the combustion
chamber for all load types. They were found to be 48.96 kW, 57.14 kW, 67.93 kW
and 74.38 kW, respectively.
Keywords
jet engine; energy analysis; exergy analysis; sustainability; part load
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