Potential of Exhaust Heat Recovery by Turbocompounding

Ismail, Youssef; Durrieu, David; Ménégazzi, Pascal; Chessé, Pascal; Chalet, David

doi:10.4271/2012-01-1603

Cited by 25 publications

(6 citation statements)

References 12 publications

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“…Adicionalmente, la mayor dificultad de expulsión de los gases quemados implica la presencia de gases residuales, retraso en la combustión, perdidas de calor en la cámara de combustión y desequilibrio termodinámico en el proceso de combustión (Ismail et al, 2012). 2 2 5 6 -1 5 3 6 • 5 1 2 • La diferencia del ciclo ORC consiste en el uso de sustancias con puntos de ebullición menor al agua como fluido de trabajo.…”

Section: Turbocompresoresunclassified

Alternativas de recuperación residual, contribución desde la ingeniería mecánica.

2022

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En la actualidad la demanda de energía aumenta de forma progresiva debido al crecimiento económico a nivel global, dando como resultado un incremento en el consumo de recursos fósiles. Lo anterior, produce un aumento en los precios de los combustibles y preocupación ambiental. A lo largo de los años, los investigadores han propuesto diversos tipos de tecnologías para el aprovechamiento del calor residual de los gases de escape en los motores de combustión interna con el objetivo de mejorar la eficiencia de los procesos de combustión. Este tipo de estrategias son alternativas con un alto potencial para mejorar la eficiencia de los motores y reducir las emisiones contaminantes. Entre las principales tecnologías investigadas se encuentran: los turbocompresores, los ciclos orgánicos de Rankine, recirculación de gases de escape y generadores termoeléctricos. Cada una de estas tecnologías presenten ventajas y desventajas particulares que afectan su beneficio económico, ambiental y técnico. La intrusión de este tipo de tecnologías, generalmente produce una contrapresión en el sistema de escape, lo cual ocasiona una reducción en la potencia mecánica del motor. Entre las tecnologías existentes, se destaca los generadores termoeléctricos debido a sus diversas ventajas y capacidad de minimizar la contrapresión en el sistema de gases de escape mediante rediseños de los generadores.

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Section: Turbocompresoresunclassified

Alternativas de recuperación residual, contribución desde la ingeniería mecánica.

2022

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“…This yielded 1-3% improvement in fuel economy at high load operating condition (Hiereth and Prenninger 2007). In the year 2009, the Bowman Power group introduced a turbocompounding system with a power turbine coupled to a permanent magnet type electric alternator (Ismail et al 2012).…”

Section: Recovery Of Waste Heat By Turbocompoundingmentioning

confidence: 99%

Diesel Engine Waste Heat Recovery Schemes for Improved Fuel Economy and Reduced Emissions: Simulation Results

Mondal

2021

Energy, Environment, and Sustainability

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Diesel engines are widely used for road and marine transports. Stationary diesel engines are also used for off-grid supply of electricity for households or to run the auxiliary equipment such as pump, compressor, etc. A significant portion of the thermal energy input to diesel engines is ultimately rejected as waste heat. Exhaust flue gas from marine diesel engines are at about 300 °C. On the other hand, jacket cooling water and scavenging air cooling water are available at below 100 °C. Available waste heat from road transport system may be utilized to produce cooling/heating effect for conditioning of the cabin environment. The waste heat may also be used in turbo chargers for a higher power density. In marine applications, the waste heat may drive a bottoming power cycle to supply the auxiliary power. Waste heat available form a stationary diesel power plant can even be used to run a cogeneration/polygeneration unit satisfying some of the localized energy needs. In the present chapter, simulation results of possible schemes and effects of waste heat recovery from diesel engines have been explored. Finally, generalized principles for the simulation of diesel engine waste heat recovery have been discussed.

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“…The operation of the engine will deteriorate as the back pressure caused by the PT increases. 25 To describe the relationship between the engine and PT, we need first to have a look at the engine balance equation…”

Section: Commandermentioning

confidence: 99%

A Commander–Tracker–Executor based energy management framework for an engine waste heat recovery system

Lei

Xie

2016

Proceedings of the Institution of Mechanical Engineers, Part A:

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Energy management for an internal combustion engine waste heat recovery system presents a complex problem. There are the coupling issues of energy recovery and energy utilization. In addition, there are the problems arising from the large thermal inertia of the energy network. A Commander-Tracker-Executor energy manager framework is proposed as the management solution. Under this approach the Commander is designed to optimally split the engine's exhaust energy among the different energy devices of the energy network at the lowest fuel cost. A disturbance estimation-based receding horizon controller is designed as a Tracker to follow the Commander's commands in real time. The Commander's decisions are made in real time based on each energy device's efficiency model, the torque demand given by the driver, and the corresponding heat rejection requirement of the whole system. The Tracker works as a trajectory follower to transform the Commander's decisions into the actuators' control objectives. The Executor ensures that the energy management goals are achieved in line with the actuators' control objectives. An energy network constructed of ----- has been taken as an example for the simulation study. The simulation results indicate that:. the manager exhibited fairly good fuel-saving potentiality along a whole driving cycle;. the proposed Commander showed eective exhaust energy splitting performance; and . the Tracker scheme demonstrated good tracking capability and robustness.

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Potential of Exhaust Heat Recovery by Turbocompounding

Cited by 25 publications

References 12 publications

Alternativas de recuperación residual, contribución desde la ingeniería mecánica.

Alternativas de recuperación residual, contribución desde la ingeniería mecánica.

Diesel Engine Waste Heat Recovery Schemes for Improved Fuel Economy and Reduced Emissions: Simulation Results

A Commander–Tracker–Executor based energy management framework for an engine waste heat recovery system

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