Detailed analysis of Integrated Steam Ethanol Reformer and High Temperature Polymer Electrolyte Membrane Fuel Cell

George, Dhanya; Suresh, P.V.

doi:10.1016/j.ijhydene.2015.11.097

Cited by 9 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Likewise, Sanchez et al [5] showed an efficiency of 56% when ethanol coming from sugarcane press-mud was employed for producing H 2 and power in an LT-PEMFC. George and Suresh [61] indicated that system efficiency varied from 10% to 60% and depends on the process conditions such as steam-to-carbon ratio, reformer temperature, and fuel cell pressure. A similar efficiency (~17%) was reported during the steam reforming of glycerol, mainly ascribed to the dilution effect on the H 2 stream [62,63].…”

Section: Discussionmentioning

confidence: 99%

Biomass Potential for Producing Power via Green Hydrogen

et al. 2021

View full text Add to dashboard Cite

Hydrogen (H2) has become an important energy vector for mitigating the effects of climate change since it can be obtained from renewable sources and can be fed to fuel cells for producing power. Bioethanol can become a green H2 source via Ethanol Steam Reforming (ESR) but several variables influence the power production in the fuel cell. Herein, we explored and optimized the main variables that affect this power production. The process includes biomass fermentation, bioethanol purification, H2 production via ESR, syngas cleaning by a CO-removal reactor, and power production in a high temperature proton exchange membrane fuel cell (HT-PEMFC). Among the explored variables, the steam-to-ethanol molar ratio (S/E) employed in the ESR has the strongest influence on power production, process efficiency, and energy consumption. This effect is followed by other variables such as the inlet ethanol concentration and the ESR temperature. Although the CO-removal reactor did not show a significant effect on power production, it is key to increase the voltage on the fuel cell and consequently the power production. Optimization was carried out by the response surface methodology (RSM) and showed a maximum power of 0.07 kWh kg−1 of bioethanol with an efficiency of 17%, when ESR temperature is 700 °C. These values can be reached from different bioethanol sources as the S/E and CO-removal temperature are changed accordingly with the inlet ethanol concentration. Because there is a linear correlation between S/E and ethanol concentration, it is possible to select a proper S/E and CO-removal temperature to maximize the power generation in the HT-PEMFC via ESR. This study serves as a starting point to diversify the sources for producing H2 and moving towards a H2-economy.

show abstract

Section: Discussionmentioning

confidence: 99%

Biomass Potential for Producing Power via Green Hydrogen

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Numerical studies of RMFC systems often use Aspen Plus software for mass-and energy-balance calculations and another programmable software (e.g., Matlab, Ansys Fluent, Comsol Multiphysics, etc.) to simulate the operation of the HT PEMFC stack or the entire system [16][17][18][19]. There are studies that use Matlab/Simulink software for the creation of applicative system models that are corroborated by experimental data [20,21].…”

Section: Introductionmentioning

confidence: 99%

Conceptual design of an integrated thermally self-sustained methanol steam reformer – High-temperature PEM fuel cell stack manportable power generator

Lotrič

Sekavčnik

Pohar

et al. 2017

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

We have investigated the concept of an integrated system for small, manportable power units. The focus of this study is the direct thermal coupling of a methanol steam reformer (MSR) and a hightemperature proton exchange membrane fuel cell (HT PEMFC) stack. A recently developed lowtemperature (LT) MSR catalyst (CuZnGaOx) was synthesized and tested in a designed reforming reactor. The experimental data show that at 200 °C the complete conversion of methanol is achievable with a hydrogen yield of 45 cm 3 min -1 gCAT -1 . An experimental setup for measuring the characteristics of the integrated system was designed and used to measure the characteristics of the two-cell HT PEMFC stack. The obtained kinetic parameters and the HT PEMFC stack characteristics were used in the modeling of the integrated system. The simulations confirmed that the integrated LT MSR/HT PEMFC stack system, which also includes a vaporizer, can achieve a thermally selfsustained working point. The base-case scenario, established on experimental data, predicts a power output of 8.5 W, a methanol conversion of 98.5%, and a gross electrical efficiency (based on the HHV) of the system equal to 21.7%. However, by implementing certain measures, the power output and the electrical efficiency can readily be raised to 11.1 W and 35.5%, respectively.

show abstract

Fabrication Techniques for the Polymer Electrolyte Membranes for Fuel Cells

Chatterjee

Hansora

2017

Organic-Inorganic Composite Polymer Electrolyte Membranes

View full text Add to dashboard Cite

Detailed analysis of Integrated Steam Ethanol Reformer and High Temperature Polymer Electrolyte Membrane Fuel Cell

Cited by 9 publications

References 19 publications

Biomass Potential for Producing Power via Green Hydrogen

Biomass Potential for Producing Power via Green Hydrogen

Conceptual design of an integrated thermally self-sustained methanol steam reformer – High-temperature PEM fuel cell stack manportable power generator

Fabrication Techniques for the Polymer Electrolyte Membranes for Fuel Cells

Contact Info

Product

Resources

About