A comparative analysis of dynamic evaporator models for organic Rankine cycle waste heat recovery systems

Xu, Bin; Rathod, Dhruvang; Yebi, Adamu; Onori, Simona; Filipi, Zoran; Hoffman, Mark

doi:10.1016/j.applthermaleng.2019.114576

Cited by 15 publications

(2 citation statements)

References 49 publications

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“…At present, the ORCs are slightly insufficient in the field of evaporator modeling and control. The evaporator control strategy can be optimized using the same identification parameters and experimental data to compare and analyze different ORC-WHR evaporator models . A tubular evaporator with a large pipe diameter and a small cross-sectional area of the exhaust side has good real-time control dynamic response characteristics and is the preferred choice to meet the high waste heat inertia design of an ORC evaporator .…”

Section: Application Of Exhaust Energy Recovery Technology At Variabl...mentioning

confidence: 99%

“…The evaporator control strategy can be optimized using the same identification parameters and experimental data to compare and analyze different ORC-WHR evaporator models. 43 A tubular evaporator with a large pipe diameter and a small cross-sectional area of the exhaust side has good real-time control dynamic response characteristics and is the preferred choice to meet the high waste heat inertia design of an ORC evaporator. 44 In addition, the thermal physical and chemical characteristics of the working medium also have a great impact on the system performance.…”

Section: Application Of Exhaust Energy Recovery Technology At Variabl...mentioning

confidence: 99%

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Summary of Turbocharging as a Waste Heat Recovery System for a Variable Altitude Internal Combustion Engine

et al. 2023

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The increase in altitude causes the decrease in internal combustion engine power and the increase in pollutant emission. Converting waste heat into more useful forms of energy through the recovery of waste heat from internal combustion engines is the most promising mechanism for improving both of these goals. This paper comprehensively reviews the development and research of waste heat recovery technology of an internal combustion engine in a variable altitude environment. It is found that exhaust gas turbocharging is the most promising waste heat recovery technology to restore high-altitude internal combustion engine power. Turbochargers are affected by low temperature and low pressure at high altitudes, resulting in poor environmental adaptability, inadequate supercharging ratios, and decreased supercharging efficiency. Therefore, it is very important to select the high pressurization system facing the plateau area and its reasonable matching characteristics. The quality of exhaust energy determines how much waste heat a turbine can recover, and only the exergy part of exhaust energy can realize heat/work conversion. The main disadvantage of turbocharging technology applied in the plateau area is that the speed ratio deviates from the design value, leading to the increase of flow loss inside the supercharger. Therefore, optimizing the internal flow field of a high-altitude supercharger is a key problem to improve the efficiency of energy recovery. The conclusion drawn from this Review is that a two-stage turbocharging system will be a key technology to improve the thermal efficiency and reduce the fuel consumption of high-altitude internal combustion engines in the coming decades. In addition, the efficient utilization of the exhaust energy of the two-stage turbine and the influence of the variable compression process of the two-stage compressor on the working medium in the cylinder will be the focus of future research.

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Section: Application Of Exhaust Energy Recovery Technology At Variabl...mentioning

confidence: 99%

Section: Application Of Exhaust Energy Recovery Technology At Variabl...mentioning

confidence: 99%

Summary of Turbocharging as a Waste Heat Recovery System for a Variable Altitude Internal Combustion Engine

et al. 2023

View full text Add to dashboard Cite

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Effect of the evaporator design parameters on the dynamic response of organic Rankine cycle units for waste heat recovery on heavy-duty vehicles

Carraro

Pili

Lazzaretto

et al. 2021

Applied Thermal Engineering

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Dynamic modeling of a mechanically coupled organic Rankine-vapor compression system for compression heat recovery based on an improved lumped parameter model

Zhou

Fang

Zhang

et al. 2023

Applied Thermal Engineering

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A comparative analysis of dynamic evaporator models for organic Rankine cycle waste heat recovery systems

Cited by 15 publications

References 49 publications

Summary of Turbocharging as a Waste Heat Recovery System for a Variable Altitude Internal Combustion Engine

Summary of Turbocharging as a Waste Heat Recovery System for a Variable Altitude Internal Combustion Engine

Effect of the evaporator design parameters on the dynamic response of organic Rankine cycle units for waste heat recovery on heavy-duty vehicles

Dynamic modeling of a mechanically coupled organic Rankine-vapor compression system for compression heat recovery based on an improved lumped parameter model

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