Temperature control of evaporators in automotive waste heat recovery systems

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Uittreksel

his paper presents a control strategy for the steam generation process in automotive waste heat recovery systems that are based on the subcritical Rankine cycle. The central question is how to regulate the flow of water into the evaporator such that dry steam is generated at its outlet, subject to large variations in the heat input. Tight control of this process increases the amount of recovered energy while ensuring safe system operation. The method consists of inversion-based feedforward combined with output feedback on the temperature of the evaporator, which is estimated using exhaust gas measurements. As this method does not require a high fidelity evaporator model, it is easy to implement. It is demonstrated on an experimental setup, where the exhaust flow is imitated by electrically heated air. On an automotive driving cycle, steam was generated reliably with a superheating temperature of 10-20 [K].

Vingerafdruk

Waste heat utilization
Evaporators
Temperature control
Steam
Gas fuel measurement
Rankine cycle
Flow of water
Exhaust gases
Feedback
Temperature
Air

Citeer dit

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title = "Temperature control of evaporators in automotive waste heat recovery systems",
abstract = "his paper presents a control strategy for the steam generation process in automotive waste heat recovery systems that are based on the subcritical Rankine cycle. The central question is how to regulate the flow of water into the evaporator such that dry steam is generated at its outlet, subject to large variations in the heat input. Tight control of this process increases the amount of recovered energy while ensuring safe system operation. The method consists of inversion-based feedforward combined with output feedback on the temperature of the evaporator, which is estimated using exhaust gas measurements. As this method does not require a high fidelity evaporator model, it is easy to implement. It is demonstrated on an experimental setup, where the exhaust flow is imitated by electrically heated air. On an automotive driving cycle, steam was generated reliably with a superheating temperature of 10-20 [K].",
author = "M.E.E. Oom and E. Feru and {de Jager}, A.G. and {de Lange}, H.C. and H. Ouwerkerk",
year = "2017",
doi = "10.1016/j.egypro.2017.09.139",
language = "English",
volume = "129",
pages = "794--801",
journal = "Energy Procedia",
issn = "1876-6102",
publisher = "Elsevier",
number = "September 2017",

}

Temperature control of evaporators in automotive waste heat recovery systems. / Oom, M.E.E.; Feru, E.; de Jager, A.G.; de Lange, H.C.; Ouwerkerk, H.

In: Energy Procedia, Vol. 129, Nr. September 2017, 2017, blz. 794-801.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Temperature control of evaporators in automotive waste heat recovery systems

AU - Oom,M.E.E.

AU - Feru,E.

AU - de Jager,A.G.

AU - de Lange,H.C.

AU - Ouwerkerk,H.

PY - 2017

Y1 - 2017

N2 - his paper presents a control strategy for the steam generation process in automotive waste heat recovery systems that are based on the subcritical Rankine cycle. The central question is how to regulate the flow of water into the evaporator such that dry steam is generated at its outlet, subject to large variations in the heat input. Tight control of this process increases the amount of recovered energy while ensuring safe system operation. The method consists of inversion-based feedforward combined with output feedback on the temperature of the evaporator, which is estimated using exhaust gas measurements. As this method does not require a high fidelity evaporator model, it is easy to implement. It is demonstrated on an experimental setup, where the exhaust flow is imitated by electrically heated air. On an automotive driving cycle, steam was generated reliably with a superheating temperature of 10-20 [K].

AB - his paper presents a control strategy for the steam generation process in automotive waste heat recovery systems that are based on the subcritical Rankine cycle. The central question is how to regulate the flow of water into the evaporator such that dry steam is generated at its outlet, subject to large variations in the heat input. Tight control of this process increases the amount of recovered energy while ensuring safe system operation. The method consists of inversion-based feedforward combined with output feedback on the temperature of the evaporator, which is estimated using exhaust gas measurements. As this method does not require a high fidelity evaporator model, it is easy to implement. It is demonstrated on an experimental setup, where the exhaust flow is imitated by electrically heated air. On an automotive driving cycle, steam was generated reliably with a superheating temperature of 10-20 [K].

U2 - 10.1016/j.egypro.2017.09.139

DO - 10.1016/j.egypro.2017.09.139

M3 - Article

VL - 129

SP - 794

EP - 801

JO - Energy Procedia

T2 - Energy Procedia

JF - Energy Procedia

SN - 1876-6102

IS - September 2017

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