Transient performance evaluation of waste heat recovery rankine cycle based system for heavyduty trucks
Résumé
The study presented in this paper aims to evaluate the transient performance
of a waste heat recovery Rankine cycle based system for a heavy duty truck
and compare it to steady state evaluation. Assuming some conditions to
hold, simple thermodynamic simulations are carried out for the comparison
of several fluids. Then a detailed first principle based model is also presented.
Last part is focused on the Rankine cycle arrangement choice by means of
model based evaluation of fuel economy for each concept where the fuels
savings are computed using two methodologies. Fluid choice and concept
optimization are conducted taking into account integration constraints (heat
rejection, packaging . . . ). This paper shows the importance of the modeling
phase when designing Rankine cycle based heat recovery systems and yields
a better understanding when it comes to a vehicle integration of a Rankine
cycle in a truck.
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