Effects of fin structure size on methane-steam reforming for hydrogen production in a reactor heated by waste heat

Zheng, Bin; Sun, Peng; Meng, Jie; Liu, Yongqi; Wang, Geoff; Tang, Shuai; Xu, Jiguo; Zhang, Kai

doi:10.1016/j.ijhydene.2019.10.143

Cited by 5 publications

(1 citation statement)

References 16 publications

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“…In 2018, H. Ishaq et al [21] analyzed an integrated trigeneration system for electricity, hydrogen, and fresh water production using waste heat from a glass melting furnace. In 2020, Bin Zheng et al [22] analyzed the influence of changes in fin structure on the hydrogen production capacity of a methane-steam reforming system. Their results showed that when the fin type changed from a straight fin to a triangular fin, the average temperature of the solid particle decreased by 30.5 K, the heat recovery efficiency increased by 7.9%, and the system's hydrogen production increased.…”

Section: Introductionmentioning

confidence: 99%

Study on the Application of a Multi-Energy Complementary Distributed Energy System Integrating Waste Heat and Surplus Electricity for Hydrogen Production

Yu,

Yang,

Chen

et al. 2024

Sustainability

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To improve the recovery of waste heat and avoid the problem of abandoning wind and solar energy, a multi-energy complementary distributed energy system (MECDES) is proposed, integrating waste heat and surplus electricity for hydrogen storage. The system comprises a combined cooling, heating, and power (CCHP) system with a gas engine (GE), solar and wind power generation, and miniaturized natural gas hydrogen production equipment (MNGHPE). In this novel system, the GE’s waste heat is recycled as water vapor for hydrogen production in the waste heat boiler, while surplus electricity from renewable sources powers the MNGHPE. A mathematical model was developed to simulate hydrogen production in three building types: offices, hotels, and hospitals. Simulation results demonstrate the system’s ability to store waste heat and surplus electricity as hydrogen, thereby providing economic benefit, energy savings, and carbon reduction. Compared with traditional energy supply methods, the integrated system achieves maximum energy savings and carbon emission reduction in office buildings, with an annual primary energy reduction rate of 49.42–85.10% and an annual carbon emission reduction rate of 34.88–47.00%. The hydrogen production’s profit rate is approximately 70%. If the produced hydrogen is supplied to building through a hydrogen fuel cell, the primary energy reduction rate is further decreased by 2.86–3.04%, and the carbon emission reduction rate is further decreased by 12.67–14.26%. This research solves the problem of waste heat and surplus energy in MECDESs by the method of hydrogen storage and system integration. The economic benefits, energy savings, and carbon reduction effects of different building types and different energy allocation scenarios were compared, as well as the profitability of hydrogen production and the factors affecting it. This has a positive technical guidance role for the practical application of MECDESs.

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Section: Introductionmentioning

confidence: 99%

Study on the Application of a Multi-Energy Complementary Distributed Energy System Integrating Waste Heat and Surplus Electricity for Hydrogen Production

Yu,

Yang,

Chen

et al. 2024

Sustainability

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Evolution of the conceptualization of hydrogen through knowledge maps, energy return on investment (EROI) and national policy strategies

Guevara-Ramírez

Mancisidor

Belver

2022

Clean Techn Environ Policy

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In order to address Climate Change and energy dependency challenges, hydrogen (H2) is emerging as a promising energy carrier. Studies related to its production have conceptualized it as green (GH2), clean, renewable (RH2), ecological, and sustainable (SH2). The aim of this research is to deepen the understanding of the GH2 concept and to state boundaries between different terms. To reach this objective, a bibliometric analysis of publications indexed in SCOPUS is launched. Also, in order to assess the potential of renewable energy sources (RES) for GH2 production, a review of the meta-analysis literature on the Energy Return on Energy Invested (EROI) ratio as regards these RES is performed. Additionally, an analysis of main national strategies on GH2 is launched. Results indicate that the GH2 concept is gaining remarkable relevance, while the keyword maps show no significant differences between SH2, RH2 and GH2. EROI reveals low average values for the different biomass energy production processes. For their part, GH2 national strategies focus mainly on solar and wind technologies, albeit leaving the door open to biomass, where EROI could become an adequate metric to guide these strategies towards a low carbon energy path. Although the role of biomass may become fundamental in this energy transition process, given its low EROI values and considering that it is not a totally clean RES, it should be indexed as RH2, but not always as GH2. Finally, a proposal that guides a more appropriate use of the term GH2 is made. Graphical abstract

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Structured ZoneFlow™-Bayonet steam reforming reactor for reduced firing and steam export: Pressure drop and heat transfer modelling and evaluation of the reactor performance

Minette

Almeida

Feinstein³

et al. 2022

Chemical Engineering Journal Advances

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Effects of fin structure size on methane-steam reforming for hydrogen production in a reactor heated by waste heat

Cited by 5 publications

References 16 publications

Study on the Application of a Multi-Energy Complementary Distributed Energy System Integrating Waste Heat and Surplus Electricity for Hydrogen Production

Study on the Application of a Multi-Energy Complementary Distributed Energy System Integrating Waste Heat and Surplus Electricity for Hydrogen Production

Evolution of the conceptualization of hydrogen through knowledge maps, energy return on investment (EROI) and national policy strategies

Structured ZoneFlow™-Bayonet steam reforming reactor for reduced firing and steam export: Pressure drop and heat transfer modelling and evaluation of the reactor performance

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