Dynamic response assessment and multi-objective optimization of organic Rankine cycle (ORC) under vehicle driving cycle conditions

Xu, Ping; Yang, Fubin; Zhang, Honggang; Xing, Chengda; Zhang, Wujie; Wang, Yan; Yao, Baofeng

doi:10.1016/j.energy.2022.125551

Cited by 10 publications

(4 citation statements)

References 51 publications

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“…Using the exhaust of internal combustion engines, ORCs can operate with efficiencies of 10–25 % at 1250 to 2800 USD/kW [ 30 ]. However, in moving vehicles, the efficiency of ORC is significantly lower [ 31 ], reducing to 6.4 % or less under road conditions, while low velocities affect safe operation [ 32 ].…”

Section: Methodsmentioning

confidence: 99%

Energy and exergy assessment of heavy-duty mining trucks. Discussion of saving opportunities

Ibañez Noriega,

Sagastume Gutiérrez,

Cabello Eras

2024

Heliyon

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Section: Methodsmentioning

confidence: 99%

Energy and exergy assessment of heavy-duty mining trucks. Discussion of saving opportunities

Ibañez Noriega,

Sagastume Gutiérrez,

Cabello Eras

2024

Heliyon

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“…The genetic algorithm (GA) is a computational model of biological evolution that simulates the natural selection and genetic mechanism of Darwinian biological evolution. At present, GA has become one of the widely used optimization algorithms and an important tool in the optimization of ORC [43,44]. This section uses the GA in the MATLAB optimization toolbox to solve the optimization problem.…”

Section: Optimization Problemmentioning

confidence: 99%

Performance Prediction and Working Fluid Active Design of Organic Rankine Cycle Based on Molecular Structure

et al. 2022

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Working fluid selection is crucial for organic Rankine cycles (ORC). In this study, the relationship between molecular structure and ORC performance was established based on the quantitative structure–property relationship (QSPR) and working fluid parameterized model (WFPM), from which an ORC working fluid was actively designed. First, the QSPR model with four properties, namely, critical temperature (Tc), boiling point (Tb), critical pressure (pc), and isobaric heat capacity (cp0), was built. Second, the evaporation enthalpy (hvap), evaporation entropy (svap), and thermal efficiency (η) were estimated by WFPM, and the results were compared with those using REFPROP to verify the calculation accuracy of the “QSPR+WFPM” coupling model. The average absolute relative deviations of evaporation enthalpy and entropy are below 8.44%. The maximum relative error of thermal efficiency is 6%. Then, the thermodynamic performance limit of ORC and corresponding thermophysical properties of the ideal working fluid were calculated at typical geothermal source conditions. Finally, the active design of the working fluid was conducted with the ideal working fluid Tc and pc as the target. The research shows that C3H4F2 and C4H3F5 are optimal working fluids at 473.15 and 523.15 K heat sources, respectively.

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“…It is broadly categorized into two classes based on the power output mode. Organic Ranking cycles [8][9][10], vapor absorption refrigeration cycles [11][12][13], turbocharging [14,15], turbo-compounding [16,17], and Stirling engines [18,19] are the existing waste recovery systems which consume waste heat as input and create mechanical torque. On the other hand, thermionic generators [20] directly convert the heat energy into an electrical current.…”

Section: Introductionmentioning

confidence: 99%

A Review of Thermoelectric Generators in Automobile Waste Heat Recovery Systems for Improving Energy Utilization

Bhakta,

Kundu

2024

Energies

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With the progress of modern times, automobile technology has become integral to human society. At the same time, the need for energy has also grown. In parallel, the total amount of waste energy that is liberated from different parts of the automobile has also increased. In this ever-increasing energy demand pool, future energy shortages and environmental pollution are the primary concerns. A thermoelectric generator (TEG) is a promising technology that utilizes waste heat and converts it into useful electrical power, which can reduce fuel consumption to a significant extent. This paper comprehensively reviews automobile thermoelectric generators and their technological advancements. The review begins by classifying different waste heat technologies and discussing the superiority of TEGs over the other existing technologies. Then, we demonstrate the basic concept of and advancements in new high-performance TEG materials. Following that, improvements and associated challenges with various aspects, such as the heat exchanger design, including metal foam, extended body, intermediate fluid and heat pipe, leg geometry design, segmentation, and multi-staging, are discussed extensively. Finally, the present study highlights research guidelines for TEG design, research gaps, and future directions for innovative works in automobile TEG technologies.

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Dynamic response assessment and multi-objective optimization of organic Rankine cycle (ORC) under vehicle driving cycle conditions

Cited by 10 publications

References 51 publications

Energy and exergy assessment of heavy-duty mining trucks. Discussion of saving opportunities

Energy and exergy assessment of heavy-duty mining trucks. Discussion of saving opportunities

Performance Prediction and Working Fluid Active Design of Organic Rankine Cycle Based on Molecular Structure

A Review of Thermoelectric Generators in Automobile Waste Heat Recovery Systems for Improving Energy Utilization

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