Thermal and economic analysis on vehicle energy supplying system based on waste heat recovery organic Rankine cycle

Chen, Yue; Tong, Le; Zhang, Shizhong

doi:10.1016/j.apenergy.2019.04.081

Cited by 39 publications

(4 citation statements)

References 32 publications

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“…Another alternative that has attracted attention in recent years is waste heat recycling. In the particular case of internal combustion engines, the use of waste heat from exhaust gases allows both a decrease in environmental pollution and a significant improvement in energy efficiency [37].…”

Section: Characteristics Of the Self-generating Industrial Sectormentioning

confidence: 99%

Innovative Technology Strategies for the Sustainable Development of Self-Produced Energy in the Colombian Industry

2023

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This research studies the current state of the Colombian industrial sector, which is focused on self-generation processes. The study’s objective is to search for viable technological strategies that strengthen this particular sector’s competitiveness and sustainable development. The analysis shows that internal combustion engines represent 49% of the technologies used for self-generation. The main fuel used in the sector is natural gas, with a percentage of 56%. The lack of strategies for the use of residual heat and technological inefficiencies caused a loss of 36% in the energy used in the Colombian industrial sector. Thermoelectric generators are a feasible way to recover energy from exhaust gases in engines used for self-generation. Additionally, they allow a 4% reduction in fuel consumption and an improvement in the engine’s energy efficiency. The use of hydrogen as fuel allows a 30% reduction in polluting emissions, such as CO2, CO, HC, and particulate matter. Hydrogen production processes, such as water electrolysis, allow the participation of Colombia’s solar energy potential, leading to sustainable hydrogen production, efficiency (60–80%), and a lower economic cost. In general, the application of thermoelectric generators and the use of hydrogen gas allow the improvement of the Colombian industrial sector’s environmental, social, and economic aspects due to greater competitiveness and the reduction in emissions and operating costs.

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Section: Characteristics Of the Self-generating Industrial Sectormentioning

confidence: 99%

Innovative Technology Strategies for the Sustainable Development of Self-Produced Energy in the Colombian Industry

2023

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“…The former leads to less pollutant engines, while the latter leads to higher engine efficiency. Several alternatives are available to recover waste thermal energy [10][11][12][13][14][15][16], thermoelectric generators being one of the currently developing technologies.…”

Section: Introductionmentioning

confidence: 99%

Electrical Modelling and Mismatch Effects of Thermoelectric Modules on Performance of a Thermoelectric Generator for Energy Recovery in Diesel Exhaust Systems

et al. 2021

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Thermoelectric generators harvesting energy from exhaust gases usually present a temperature mismatch between modules, due to the gradual cooling of the gases along the flow direction. The way modules that produce unequal voltages are connected has a deep impact on the overall power output. A further step in the prediction of thermoelectric production is to consider the complete layout of the thermoelectric modules and not consider them as isolated systems. In this work, a model to predict the electric behavior of thermoelectric generators for automotive applications at different points of operation is presented. The model allows testing of serial-parallel connection configurations. The results present good agreement with experimental data. This model could be used on similar light duty vehicles with similar engines as the engine used in this work and using similar configuration of thermoelectric generators. Simulated scenarios considering realistic operating conditions in a light duty vehicle allow stating that thermoelectric modules interconnection under heterogenous thermal surface conditions has a significant negative effect (more than 17%) on electric energy production. Moreover, the proposed model shows the need to protect the electric circuit of the thermoelectric generator to avoid the negative effect of possible malfunction of some thermoelectric modules.

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“…Through energy and exergy analysis, it was found that the total heat efficiency and the total exergy efficiency of the system were approximately 60.51% and 50.84%, respectively. Yue et al [18] compared the overall thermal and economic performance of the vehicle energy supply system with an independent organic Rankine cycle subsystem for waste heat recovery and the traditional vehicle energy supply system, and verified that the proposed system has significant advantages in both thermal and economic performance. Owebor et al [19] proposed an energy, exergy, environmental and economic analysis model for municipal waste-to-energy plants, and generate the solution and simulation of the model in Gasify, Engineering Equation Solver and MS Excel.…”

Section: Introductionmentioning

confidence: 99%

Construction and Optimization of a Thermo-economic Cost Analysis Model for the Complex Energy Network

Zhang¹,

Wang²

2021

IJHT

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Improving the energy use efficiency of the energy system is of great significance to the development of the national energy economy and the improvement of the national economic competitiveness. The existing domestic research on thermo-economic costs is insufficient. For example, there is no research on the allocation of thermo-economic costs and on the complex energy network with multiple energy outputs. Therefore, this paper reconstructs and optimizes the thermo-economic cost analysis model for the complex energy network. First, the thermo-economic cost model for each sub-network and that for each energy output of the complex energy network were established, and the structure block diagram of the distributed thermo-economic cost allocation model for the complex energy network was given. Then, a local-global decomposition optimization method was proposed for the complex energy network to achieve the thermo-economic optimization of the complex energy network. The experimental results proved the effectiveness of the proposed algorithm.

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Thermal and economic analysis on vehicle energy supplying system based on waste heat recovery organic Rankine cycle

Cited by 39 publications

References 32 publications

Innovative Technology Strategies for the Sustainable Development of Self-Produced Energy in the Colombian Industry

Innovative Technology Strategies for the Sustainable Development of Self-Produced Energy in the Colombian Industry

Electrical Modelling and Mismatch Effects of Thermoelectric Modules on Performance of a Thermoelectric Generator for Energy Recovery in Diesel Exhaust Systems

Construction and Optimization of a Thermo-economic Cost Analysis Model for the Complex Energy Network

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