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Experimental Investigation and Modelling of a 1.5 kW Axial Turbine for Waste Heat Recovery of a Gasoline Passenger Car through a Rankine Cycle
Technical Paper
2018-37-0007
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Rankine cycle power system is a promising technology to convert the wasted thermal energy from engines into useful energy. In a way to decrease the CO2 emissions of passenger cars, it is possible to recover the waste heat from the exhaust gas that presents a high exergy compared to other sources of waste heat (engine cooling, exhaust gas recovery cooling, etc.). A Rankine cycle test-rig is designed and built to assess the performance of such a cycle in real operating conditions. The most critical component is the expander. This component needs to be compact, light, efficient, reliable and cheap among other criteria. In this context, a 1.5 kW axial turbine composed of two wheels is tested on a Rankine cycle test-rig coupled with a 150 kW engine. A detailed analysis of the performance is proposed. The maximum turbine mechanical isentropic efficiency reached is 41.5%. A semi-empirical approach is proposed to predict the performance of the axial turbine in a wide range of conditions. Finally, the performance on a driving cycle is compared with another technology of expander (scroll).
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Citation
Dumont, O., "Experimental Investigation and Modelling of a 1.5 kW Axial Turbine for Waste Heat Recovery of a Gasoline Passenger Car through a Rankine Cycle," SAE Technical Paper 2018-37-0007, 2018, https://doi.org/10.4271/2018-37-0007.Data Sets - Support Documents
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