This study explores the potentials of employing an
Organic Rankine Cycle (ORC) system with variable inlet guide vanes (VIV)
turbine geometry designed on a GT-Suite platform for effective exhaust heat
recovery (EHR) application onboard passenger vehicles. The ORC model simulation
was based on vehicle speed mode using R245fa as working fluid to assess the
thermal performance of the ORC system when utilizing modified turbine geometry.
Interestingly, the model achieved a very improved performance in contrast to
the model without a modified turbine configuration. The results revealed the
average 2.32 kW ORC net output, 4.93% thermal efficiency, 6.1% mechanical
efficiency, and 5.0% improved brake specific fuel consumption (BSFC) for the
developed model. As determined by the performance indicators, these promising
results from the model study show the prospect of EHR technology application in
the transportation sector for reduction in exhaust emissions and fuel savings.
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