Experiment Design for Waste Heat Recovery Modeling in Heavy Duty Trucks

Galuppo, Francesco; Nadri, Madiha; Reiche, Thomas; Lemort, Vincent

doi:10.1016/j.ifacol.2018.10.165

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…Under both condensation arrangements, the ORC produces electrical power for charging a 48V hybrid battery pack. Two competing superheat control strategies are tested, including (1) a multi-model PID (MMPID) controller using "37 first order plus time delay (FOPTD) models" from previous work [194] and (2) a single fixed PI controller using cycle-averaged FOPTD parameters. Chief among the results is the superior performance of the indirect condensation system and the MMPID controller since the direct condensation system's fan consumed up to 500 W of the ORC's power benefit and the MMPID controller kept superheat fluctuations/error significantly lower (±10 K instead of ±20 K).…”

Section: Technologymentioning

confidence: 99%

Review of Organic Rankine Cycles for Internal Combustion Engine Waste Heat Recovery: Latest Decade in Review

Sprouse

2024

Sustainability

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The last decade (2013–2023) was the most prolific period of organic Rankine cycle (ORC) research in history in terms of both publications and citations. This article provides a detailed review of the broad and voluminous collection of recent internal combustion engine (ICE) waste heat recovery (WHR) studies, serving as a necessary follow-on to the author’s 2013 review. Research efforts have targeted diverse applications (e.g., vehicular, stationary, and building-based), and it spans the full gamut of engine sizes and fuels. Furthermore, cycle configurations extend far beyond basic ORC and regenerative ORC, particularly with supercritical, trilateral, and multi-loop ORCs. Significant attention has been garnered by fourth-generation refrigerants like HFOs (hydrofluoroolefins), HFEs (hydrofluoroethers), natural refrigerants, and zeotropic mixtures, as research has migrated away from the popular HFC-245fa (hydrofluorocarbon). Performance-wise, the period was marked by a growing recognition of the diminished performance of physical systems under dynamic source conditions, especially compared to steady-state simulations. Through advancements in system control, especially using improved model predictive controllers, dynamics-based losses have been significantly reduced. Regarding practically minded investigations, research efforts have ameliorated working fluid flammability risks, limited thermal degradation, and pursued cost savings. State-of-the-art system designs and operational targets have emerged through increasingly sophisticated optimization efforts, with some studies leveraging “big data” and artificial intelligence. Major programs like SuperTruck II have further established the ongoing challenges of simultaneously meeting cost, size, and performance goals; however, off-the-shelf organic Rankine cycle systems are available today for engine waste heat recovery, signaling initial market penetration. Continuing forward, next-generation engines can be designed specifically as topping cycles for an organic Rankine (bottoming) cycle, with both power sources integrated into advanced hybrid drivetrains.

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Section: Technologymentioning

confidence: 99%

Review of Organic Rankine Cycles for Internal Combustion Engine Waste Heat Recovery: Latest Decade in Review

Sprouse

2024

Sustainability

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“…4.2.1. Single-Phase Condition at Turbine Inlet Two standard dimensionless turbomachinery parameters are the total-to-static pressure ratio (π) and the specific speed (𝑁 ) [49]. It is therefore observed that the flow prediction model corrected with the vapor quality at the turbine inlet provides accurate results: +/− 10 % for 291 tests.…”

Section: Efficiency Analysismentioning

confidence: 99%

“…Two standard dimensionless turbomachinery parameters are the total-to-static pressure ratio (π) and the specific speed (N s ) [49].…”

Section: Efficiency Analysis 421 Single-phase Condition At Turbine Inletmentioning

confidence: 99%

A Recent Advance on Partial Evaporating Organic Rankine Cycle: Experimental Results on an Axial Turbine

et al. 2022

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The organic Rankine cycle (ORC) technology is an efficient way to convert low-grade heat from renewable sources or waste heat for power generation. The partial evaporating organic Rankine cycle (PEORC) can be considered as a promising alternative as it can offer a higher utilization of the heat source. An experimental investigation of a small ORC system used in full or partial evaporation mode is performed. First characterized in superheated mode, which corresponds to standard ORC behavior, a semi-empirical correlative approach involving traditional non-dimensional turbomachinery parameters (specific speed, pressure ratio) can accurately describe one-phase turbine performance. In a second step, two-phase behavior is experimentally investigated. The efficiency loss caused by the two-phase inlet condition is quantified and considered acceptable. The turbine two-phase operation allows for an increase in the amount of recovered heat source. The ability to operate in two phases provides a new degree of flexibility when designing a PEORC. The semi-empirical correlative approach is then completed to take into account the partially evaporated turbine inlet condition. The qualitative description and the quantitative correlations in the one-phase and two-phase modes were applied to different pure working fluids (Novec649TM, HFE7000 and HFE7100) as well as to a zeotropic mixture (Novec649TM/HFE7000).

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Organic Rankine Cycle based waste heat recovery modeling and control of the low pressure side using direct condensation and dedicated fans

Galuppo

Reiche²,

Lemort³

et al. 2021

Energy

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Experiment Design for Waste Heat Recovery Modeling in Heavy Duty Trucks

Cited by 3 publications

References 9 publications

Review of Organic Rankine Cycles for Internal Combustion Engine Waste Heat Recovery: Latest Decade in Review

Review of Organic Rankine Cycles for Internal Combustion Engine Waste Heat Recovery: Latest Decade in Review

A Recent Advance on Partial Evaporating Organic Rankine Cycle: Experimental Results on an Axial Turbine

Organic Rankine Cycle based waste heat recovery modeling and control of the low pressure side using direct condensation and dedicated fans

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