Introducing and investigation of a combined molten carbonate fuel cell, thermoelectric generator, linear fresnel solar reflector and power turbine combined heating and power process

Marefati, Mohammad; Mehrpooya, Mehdi

doi:10.1016/j.jclepro.2019.118247

Cited by 110 publications

(26 citation statements)

References 66 publications

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“…A variety of fuel cells are being developed to convert chemical energy into electrical energy. [1][2][3][4][5][6][7][8][9] Fuel cells have no emissions, better energy density, 10 and could supply power in applications ranging from miniature electronic devices to big plants. Most fuel cells use a proton exchange membrane (PEM) to carry out the electrochemical reactions.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous MMFCs have been developed with different fuel-oxidant combinations, microchannel configurations, and electrode materials. [2][3][4][5][6][7][8][9] Multiple studies have been carried out to improve an MMFC's fuel utilization, crossover issues, mass-transport and Ohmic losses, and lower volumetric power density, which are considered as main setbacks. [27][28][29][30] Lower fuel utilization in MMFCs is caused by slow reaction rates at the cathode, including slow oxygen reduction, different fuel-oxidant kinetic properties, and triple phase solid-liquid-gas interactions, which are common conditions on the cathode side.…”

Section: Introductionmentioning

confidence: 99%

“…A variety of fuel cells are being developed to convert chemical energy into electrical energy 1‐9 . Fuel cells have no emissions, better energy density, 10 and could supply power in applications ranging from miniature electronic devices to big plants.…”

Section: Introductionmentioning

confidence: 99%

“…Kjeang et al 27 comprehensively reviewed the operation and applications of MMFCs. Numerous MMFCs have been developed with different fuel‐oxidant combinations, microchannel configurations, and electrode materials 2‐9 . Multiple studies have been carried out to improve an MMFC's fuel utilization, crossover issues, mass‐transport and Ohmic losses, and lower volumetric power density, which are considered as main setbacks 27‐30 .…”

Section: Introductionmentioning

confidence: 99%

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A membraneless microfluidic fuel cell with a hollow flow channel and porous flow‐through electrodes

Tanveer

Kim

2021

Int J Energy Res

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A novel flow channel configuration of a membraneless microfluidic fuel cell (MMFC) with porous flow-through electrodes was investigated numerically. A numerical model was developed for the electrochemical analysis and validated using experimental data. The physical phenomena involved in the microfluidic fuel cell including the flow of the vanadium redox couple (oxidant and fuel), mass transport, and electrochemical reaction kinetics at the electrodes are coupled in the numerical model. Considering the impact of diffusive mixing zone on the performance of MMFC, a hollow structure is proposed for the cross-section of the central flow channel. The hollow structure showed a peak power density, which is higher than those of the H-shaped, simple bridgeshaped, and rectangular channels by 6%, 18%, and 82%, respectively. Highlights• Numerical model of an MMFC with flow-through porous electrodes was validated using experimental data.• MMFC with flow through electrodes was investigated for various channel configurations.• Hollow flow channel coupled with porous electrodes performed best at critical height ratio.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A membraneless microfluidic fuel cell with a hollow flow channel and porous flow‐through electrodes

Tanveer

Kim

2021

Int J Energy Res

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“…Fuel cell as its key power generation device has the advantages of high e ciency and environmentally friendly. It can directly convert chemical energy into electrical energy, refrigeration and heat by system coupling (Wu et al, 2016;Ghorbani et al, 2019;Marefati et al, 2019) . The theory of energy conversion e ciency can reach over 85% without emissions of nitrogen oxides and sulfur oxides.…”

Section: Introductionmentioning

confidence: 99%

Study of 10kW molten carbonate fuel cell power generation system and its performance test

Zhang

Li³

et al. 2020

Preprint

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High-temperature fuel cells are a power technology that can improve the efficiency of electricity generation and achieve near-zero emissions of carbon dioxide. The present work explores the performance of the 10kW high-temperature molten carbonate fuel cell (MCFC). The key materials of the molten carbonate fuel cell single cell were characterized and analyzed by X-ray diffraction(XRD) and scanning electron microscope (SEM). The results show that the pore size of key electrode material was 6.5 μm and the matrix material is α-LiAlO2.The open circuit voltage of the single cell is 1.23 V in experiment. The current density is greater than 100 mA / cm^2 when the operating voltage is 0.7 V. The 10 kW fuel cell stack was constitutive of 80 pieces single fuel cells with area of 2000 cm2. The open circuit voltage of the stack reaches above 85 V. The fuel cell stack power and current density can reach 11.7 kW and 104.5 mA/cm^2 when the operating voltage is 56 V. The influence and long-term stable operation of the stack were also analyzed and discussed. The successful operation of 10kW high temperature fuel cell promotes the scale of domestic fuel cell and provides the research basis of fuel cell capacity enhancement and distributed generation in the next step.

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Numerical investigation of a new combined energy system includes parabolic dish solar collector, Stirling engine and thermoelectric device

et al. 2021

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Summary According to new findings, the use of clean energy sources such as solar energy to supply energy (both electricity and heat) to human societies is essential. On the other hand, choosing the appropriate technology to convert solar energy into useful energy in the form of individual or combined systems is a fundamental issue. Individual solar energy systems have inherently low performance. However, their use in hybrid energy systems with other energy generation devices is key solution and shows high performance. The present work provides the performance of a new combined energy system composed of the parabolic dish solar collector (PDC), Stirling engine (SE) and thermoelectric device (TD) under various parameters. Sun is the main source of energy in this system, where, sunlight is focused on the PDC focal point by the parabolic shaped mirrors. Thus, the useful thermal power is produced by PDC and then feeds to the SE. The operating fluid of the engine is heated by this heat and converted into mechanical energy. Then, the mechanical energy is converted into electricity by a generator connected to the SE and the excess heat is lost from the engine. The exhaust of the SE transferred to the TEG hot end and produces further electricity. In addition, the TEC module absorbs the cooled environment heat and produces cooling energy (by consuming electricity from the TEG). Therefore, the proposed combined process provides the electricity, heat and cooling. The paper is based on the following three scenarios: (1) the system performance is evaluated under constant climatic conditions, (2) climate data from five various cities in Europe and Asia are used for system operation and (3) this scenario presents the general comparison between the two different hybrid energy systems driven by PDC and linear Fresnel reflector (LFR). In addition, multi‐objective optimization is provided to obtain the optimal performance of the developed hybrid system. The optimization results showed that, the optimum total output electricity and overall efficiency were 26.21 kW and 39.17%, respectively. It was also found that, average daily useful power generated by PDC in Moscow on 14‐June is 373.97 W/m2, which is about 11.1%, 1.55%, 33.3% and 14.23% more than Tehran, Beijing, Geneva and Kiev, respectively. Furthermore, increasing the temperature of PDC absorber improves the performance of SE and TD and subsequently improves the overall operation. Also, in terms of the PDC numbers, the system in the cities of Tehran, Beijing and Moscow has a better justification compared to the other two cities (Geneva and Kiev).

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Introducing and investigation of a combined molten carbonate fuel cell, thermoelectric generator, linear fresnel solar reflector and power turbine combined heating and power process

Cited by 110 publications

References 66 publications

A membraneless microfluidic fuel cell with a hollow flow channel and porous flow‐through electrodes

A membraneless microfluidic fuel cell with a hollow flow channel and porous flow‐through electrodes

Study of 10kW molten carbonate fuel cell power generation system and its performance test

Numerical investigation of a new combined energy system includes parabolic dish solar collector, Stirling engine and thermoelectric device

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