The optimal operation states and parametric choice strategies of a DCFC-AMTEC coupling system with high efficiency

Peng, Wanli; Cai, Ling; Lin, Jian; Zhao, Yingru; Chen, Jincan

doi:10.1016/j.enconman.2019.05.016

Cited by 23 publications

(6 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When some heat flows from AMTEC to TEG, the TEG begins to work. According to the literature, 37,49,50 the fundamental principle of TEG is based on the Seebeck effect of thermoelectric materials, where the generated voltage is directly proportional to the temperature difference between hot and cold junctions of TEG. The performance of TEG is also influenced by Peltier and Thomson effects, and the Seebeck and Peltier effects are junction phenomenon but the Thomson effect occurs through the length of the thermoelectric element and influences the temperature profile.…”

Section: Thermoelectric Generatormentioning

confidence: 99%

“…Based on the energy conservation law, the heat transferred from MHDCFC to AMTEC and the net heat from AMTEC to TEG can be, respectively, given by. 37,40,48…”

Section: Triple-cycle Systemmentioning

confidence: 99%

“…For example, Wu et al 35 studied a cogeneration system composed of a parabolic solar collector and an AMTEC. Peng et al 37 used an AMTEC to recover the exhaust heat generated in a molten carbonate DCFC for additional electrical energy generation. Tanaka 38 used an AMTEC to design a solar thermal generating system.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance potential of a new molten hydroxide direct carbon fuel cell–based triple‐cycle system for clean and efficient coal use

Han

Zhang

Xie

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

To efficiently and environmental-friendly use coal, a novel triplecycle system model incorporating molten hydroxide direct carbon fuel cell (MHDCFC), alkali metal thermal electric converter (AMTEC), and thermoelectric generator (TEG) is proposed to evaluate the performance potential.Considering a variety of electrochemical and thermodynamic irreversible losses, a mathematical model for the proposed system is developed, and optimum operation ranges for several important performance indicators are determined. Numerical calculations indicate that the improvements in the maximum power density and the corresponding efficiency of the triple-cycle system are, respectively, about 92% and 26% compared with the single MHDCFC, and the improvements are, respectively, 11% and 10% compared with the cogeneration system composed of MHDCFC and AMTEC. Extensive

show abstract

Section: Thermoelectric Generatormentioning

confidence: 99%

“…Based on the energy conservation law, the heat transferred from MHDCFC to AMTEC and the net heat from AMTEC to TEG can be, respectively, given by. 37,40,48…”

Section: Triple-cycle Systemmentioning

confidence: 99%

See 1 more Smart Citation

Performance potential of a new molten hydroxide direct carbon fuel cell–based triple‐cycle system for clean and efficient coal use

Han

Zhang

Xie

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

show abstract

“…Lodhi and Malka 28 optimized the efficiency of a thermionic energy conversion device/AMTEC combined system, and they reported that the efficiency of the combined system was higher than the highest efficiency among the individual thermionic device and AMTEC. Peng et al 29 presented a direct carbon fuel cell/AMTEC combined system to evaluate and optimize the performance, and they determined the optimum operating ranges of key performance indicators. Han et al 30 evaluated a molten hydroxide direct carbon fuel cell/AMTEC combined system performance from energy and exergy perspectives.…”

Section: Introductionmentioning

confidence: 99%

A cost‐efficient path to utilize coal via solid oxide fuel cells and alkali metal thermoelectric converters

Yang

Ren

Zhang

2022

Intl J of Energy Research

View full text Add to dashboard Cite

In addition to directly burning in firepower plants, coal can be alternatively gasified into gaseous carbon monoxide and then fed into solid oxide fuel cells for efficient power generation. Carbon monoxide solid oxide fuel cells (CO-SOFCs) not only avoid the drawbacks of expensive hydrogen fuel but also facilitate carbon dioxide's separation and enrichment. In this paper, an integrated system is first presented to efficiently recycle the waste heat released from CO-SOFCs via alkali metal thermoelectric converters (AMTECs) for additional electricity generation. Key performance indicators such as power density and energy efficiency are mathematically expressed by including the heat-transfer losses between heat sources and AMTEC. The maximum power density of the integrated system gains 18% improvement compared with that of the sole CO-SOFC. The maximum efficiency can reach 60.84%. The optimum ranges of the current density, efficiency, and power density for the whole integrated system are determined. Furthermore, the influences of the fuel cell temperature on the optimum ranges are also studied. The correlations between the critical parameters and the maximum power density and efficiency of the system are revealed. The maximum power density and efficiency as well as the corresponding parameters are calculated numerically. The findings show that waste heat can be recycled efficiently by employing AMTECs. Novelty Statement• A numerical model of the CO-SOFC/AMTEC integrated system is established.• The maximum efficiency of the hybrid system can reach 60.84%.• The optimum ranges of key parameters are determined and discussed.

show abstract

“…As an extraordinary feature, given that the outlet of the anode of MCFC is rich in CO 2 , it is used as a CO 2 separation plant via a CO 2 absorbing procedure [65][66][67]. With different procedures, such as cryogenic, the mentioned concept has been evaluated in a plethora of studies, and from various standpoints [68][69][70]. The main aim of all mentioned investigations is to improve the CO 2 absorption ratio and decrease the rate of the exergy destruction cost.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Thermoeconomic Evaluation and Multi-Criteria Optimization of a Combined MCFC/TEG System

et al. 2021

View full text Add to dashboard Cite

In this study, an integrated molten carbonate fuel cell (MCFC), thermoelectric generator (TEG), and regenerator energy system has been introduced and evaluated. MCFC generates power and heating load. The exit fuel gases of the MCFC is separated into three sections: the first section is transferred to the TEG to generate more electricity, the next chunk is conducted to a regenerator to boost the productivity of the suggested plant and compensate for the regenerative destructions, and the last section enters the surrounding. Computational simulation and thermodynamic evaluation of the hybrid plant are carried out utilizing MATLAB and HYSYS software, respectively. Furthermore, a thermoeconomic analysis is performed to estimate the total cost of the product and the system cost rate. The offered system is also optimized using multi-criteria genetic algorithm optimization to enhance the exergetic efficiency while reducing the total cost of the product. The power generated by MCFC and TEG is 1247.3 W and 8.37 W, respectively. The result explicates that the provided electricity and provided efficiency of the suggested plant is 1255.67 W and 38%, respectively. Exergy inquiry outcomes betokened that, exergy destruction of the MCFC and TEG is 13,945.9 kW and 262.75 kW, respectively. Furthermore, their exergy efficiency is 68.22% and 97.31%, respectively. The impacts of other parameters like working temperature and pressure, thermal conductance, the configuration of the advantage of the materials, etc., on the thermal and exergetic performance of the suggested system are also evaluated. The optimization outcomes reveal that in the final optimum solution point, the exergetic efficiency and total cost of the product s determined at 70% and 30 USD/GJ.

show abstract

The optimal operation states and parametric choice strategies of a DCFC-AMTEC coupling system with high efficiency

Cited by 23 publications

References 50 publications

Performance potential of a new molten hydroxide direct carbon fuel cell–based triple‐cycle system for clean and efficient coal use

Performance potential of a new molten hydroxide direct carbon fuel cell–based triple‐cycle system for clean and efficient coal use

A cost‐efficient path to utilize coal via solid oxide fuel cells and alkali metal thermoelectric converters

A Comprehensive Thermoeconomic Evaluation and Multi-Criteria Optimization of a Combined MCFC/TEG System

Contact Info

Product

Resources

About