Investigation of micro-combined heat and power application of PEM fuel cell systems

Budak, Yağmur; Devrim, Yılser

doi:10.1016/j.enconman.2018.01.077

Cited by 90 publications

(28 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For Equation (16), the term A tot (m 2 ) is the total surface area of the bed (including the fins surface area); A fin (m 2 ) is the surface area of a fin; N is the total number of fins that have been included within the bed; n f is the thermal fin efficiency, and ΔΤ (K) is the temperature difference. Thus, when using Equation (16), the term A f has to be calculated accordingly, by extracting the surface area of the four rectangular openings and the area of the five holes. Thus, when using Equation (16), the term A f has to be calculated accordingly, by extracting the surface area of the four rectangular openings and the area of the five holes.…”

Section: Analysis Of the Resistive Networkmentioning

confidence: 99%

“…15 The main reason is that FC systems have an advantage over conventional CHP systems in terms of lower heat to power ratios. 16,17 One of the major issues for the introduction of FC technologies in the market is the storage of hydrogen, 18,19 along with sustainable hydrogen production. 20 The current technologies for hydrogen storage are high-pressure gas storage, liquid storage, and solid-state storage accompanied by the formation of metal hydrides.…”

Section: Introductionmentioning

confidence: 99%

“…10,11 A green and sustainable building is defined as an environmentally friendly and responsible structure, which is also a resource efficient for the building life cycle. 16,17 One of the major issues for the introduction of FC technologies in the market is the storage of hydrogen, 18,19 along with sustainable hydrogen production. 15 The main reason is that FC systems have an advantage over conventional CHP systems in terms of lower heat to power ratios.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Study on the hydrogenation of an Mm‐based AB ₅ ‐intermetallic for sustainable building applications

Gkanas

2019

Int J Energy Res

View full text Add to dashboard Cite

Summary In the present study, a numerical approach regarding the thermal management of an Mm‐based AB5‐intermetallic (MmNi4.6Al0.4) for the hydrogenation process is introduced and analysed. Several heat management scenarios are studied. The numerical model was supported and validated with experimental data in terms of hydrogenation capacity and temperature distribution. The numerical analysis is based on the introduction of the energy, mass, and momentum conservation equations to numerically describe the hydrogenation reaction. The main aim of the present study is the numerical description of the heat management when 200 g of hydrogen are stored (13 kg of the hydride). The heat management cases consider the usage of cooling tubes in combination with high thermal conductivity fins. In general, various parameters affect the efficiency of the heat management. The parameters considered are the fin thickness, the fin number—which is directly connected to the metal hydride thickness convective heat transfer coefficient. A nondimensional parameter (nondimensional conductance [NDC]) specially modified to describe the role of the fins in addition to the cooling tubes is introduced to evaluate the heat management. The target of the study was to reduce the hydrogenation time of almost 13 kg of MmNi4.6Al0.4, and from the parametric study, it has been found that the more efficient conditions are fin thickness between 5 and 8 mm and the convective heat transfer coefficient of 2000 W/m2 K.

show abstract

Section: Analysis Of the Resistive Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Study on the hydrogenation of an Mm‐based AB ₅ ‐intermetallic for sustainable building applications

Gkanas

2019

Int J Energy Res

View full text Add to dashboard Cite

show abstract

“…Moreover, it is extensively applied to the distribution networks . Also, it is implemented in microgrid applications . In addition, the PEMFC is used in several domestic applications …”

Section: Introductionmentioning

confidence: 99%

“…9 Also, it is implemented in microgrid applications. 12 In addition, the PEMFC is used in several domestic applications. 13 Recently, several studies have been reported to model the PEMFCs which are collected and summarized by Karanfil in 2020.…”

mentioning

confidence: 99%

Parameters extraction of PEMFC's model using manta rays foraging optimizer

2020

View full text Add to dashboard Cite

Summary In this article, a recently developed bio‐inspired based manta rays foraging optimizer (MRFO) is attempted for reliable and accurate extraction of the model uncertain parameters of proton exchange membrane fuel cells (PEMFCs). The parameter estimation is formulated as a non‐linear optimization problem subject to set of restrictions. The great development and tremendous revolution of computation heuristic‐based algorithms are the impetus of the authors to apply the MRFO to solve this constrained optimization problem resulting in a precise PEMFC model. Three case studies of typical field PEMFC stacks namely Ballard type Mark V, NedStack type PS6, and Horizon type H‐12. Various I to V datasets are demonstrated to appraise the performance of MRFO among other recent optimizers available in the literature. To be objective and for sake of quantifications, the best scores of minimum fitness values are 0.8533, 2.1360, and 0.0966 for the later said PEMFC stacks, correspondingly. At a later stage, production of various characteristics under varying operating conditions such as changeable cell temperature and regulating pressures are established using the generated best values of PEMFCs model. Further calculations of statistical indices are performed to validate the robustness of obtained results by the MRFO. Through comprehensive performance assessments, it can be confirmed that MRFO is very promising tool for the effective extraction of PEMFCs' model and suggested to be applied for solving other engineering problems.

show abstract

Carbon Shell‐Encapsulated Metal Alloy Catalysts with Pt‐Rich Surfaces for Selective Hydrogen Oxidation Reaction

Min

Kim

et al. 2022

ChemElectroChem

View full text Add to dashboard Cite

The performance of polymer electrolyte membrane fuel cells (PEMFCs) is deteriorated by the occurrence of reverse current flow. To suppress the reverse current flow, a hydrogen oxidation reaction (HOR)‐selective catalyst based on the molecular sieve effect should be developed. Here, considering the carbon solubility in transition metals, carbon shell‐encapsulated metal alloy nanoparticles with superior HOR selectivity were fabricated using carbon source in metal precursors. In particular, we introduced carbon solubility as the important parameter that should be considered in the catalyst design. Using Pt and Co with different carbon solubility, as a model catalyst, the effect of the metal composition of the core material on the carbon shell structure was discussed in detail. Due to the formation of high‐density carbon shell and Pt‐rich surface on the alloy nanoparticle, the HOR selectivity was remarkably enhanced. Therefore, this study provides insights into the development of carbon shell‐encapsulated nanoparticles for reaction‐selective catalysis.

show abstract

Investigation of micro-combined heat and power application of PEM fuel cell systems

Cited by 90 publications

References 32 publications

Study on the hydrogenation of an Mm‐based AB ₅ ‐intermetallic for sustainable building applications

Study on the hydrogenation of an Mm‐based AB ₅ ‐intermetallic for sustainable building applications

Parameters extraction of PEMFC's model using manta rays foraging optimizer

Carbon Shell‐Encapsulated Metal Alloy Catalysts with Pt‐Rich Surfaces for Selective Hydrogen Oxidation Reaction

Contact Info

Product

Resources

About

Investigation of micro-combined heat and power application of PEM fuel cell systems

Cited by 90 publications

References 32 publications

Study on the hydrogenation of an Mm‐based AB 5 ‐intermetallic for sustainable building applications

Study on the hydrogenation of an Mm‐based AB 5 ‐intermetallic for sustainable building applications

Parameters extraction of PEMFC's model using manta rays foraging optimizer

Carbon Shell‐Encapsulated Metal Alloy Catalysts with Pt‐Rich Surfaces for Selective Hydrogen Oxidation Reaction

Contact Info

Product

Resources

About

Study on the hydrogenation of an Mm‐based AB ₅ ‐intermetallic for sustainable building applications

Study on the hydrogenation of an Mm‐based AB ₅ ‐intermetallic for sustainable building applications