Experimental results of the hydrogen production control of a hydrogen energy buffer

Sánchez-Díaz, Carlos; Monrabal, Javier; González, Domingo; Alfonso, David; Peñalvo-López, Elisa

doi:10.1016/j.ijhydene.2015.02.048

Cited by 9 publications

(7 citation statements)

References 21 publications

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“…It compares the evolution of the energy context with the actual energy mix of the country with an HRES (Hybrid Renewable Systems) scenario based on distributed renewable power generation. The HRES scenario explores the impact of increasing the contribution of renewable sources in the country by means of distributed renewable hybrid systems [14,15]. SIMESEN allows analysing two alternative paths in order to identify the key factors and quantify the contribution of renewable sources for reaching a sustainable objective.…”

Section: Methodsmentioning

confidence: 99%

A Methodology for Analysing Sustainability in Energy Scenarios

et al. 2017

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Abstract:Energy is a key factor in sustainability and a very attractive but risky sector for entrepreneurs. The need for sustainability in the energy sector forces the introduction of renewable sources in any scenario considered, but this investment must be thoroughly assessed. A methodology is required that enables the deduction of a realistic level of participation of renewable energy in the energy scenario in each particular case. Such a methodology should take into account all the factors involved and, by conciliating the different constraints imposed by each of them, find the maximum level of renewable energy possible in the system. This paper introduces a new methodology to address this problem by taking into account demand, generation, level of resources and technologies; and applies it to a particular case in a region of Democratic Republic of Congo. The uncertainties present in the energy sector, as well as the numerous factors at play, call for scenario planning, and this paper presents a structured procedure for viewing plausible futures.

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Section: Methodsmentioning

confidence: 99%

A Methodology for Analysing Sustainability in Energy Scenarios

et al. 2017

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“…The system has a specific energy consumption that varies from 4.4 to 9.3 kWh/kgH 2 . However, compression ratios considered are different from the study presented in this article because the hydrogen compression system described in [24] is characterized by an inlet pressure decreasing from 200 to 120 bar g, and outlet pressure of the storage of 450 bar g.…”

Section: Introductionmentioning

confidence: 83%

“…In [24], a hydrogen compression system powered by renewable energy sources is described. The system has a specific energy consumption that varies from 4.4 to 9.3 kWh/kgH 2 .…”

Section: Introductionmentioning

confidence: 99%

Experimental Characterization of an Alkaline Electrolyser and a Compression System for Hydrogen Production and Storage

et al. 2021

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Storing renewable energy in chemicals, like hydrogen, can bring various benefits like high energy density, seasonal storability, possible cost reduction of the final product, and the potential to let renewable power penetrate other markets and to overcome their intermittent availability. In the last year’s production of this gas from renewable energy sources via electrolysis has grown its reputation as one feasible solution to satisfy future zero-emission energy demand. To extend the exploitation of Renewable Energy Source (RES), small-scale conversion plants seem to be an interesting option. In view of a possible widespread adoption of these types of plants, the authors intend to present the experimental characterization of a small-scale hydrogen production and storage plant. The considered experimental plant is based on an alkaline electrolyser and an air-driven hydrogen compression and storage system. The results show that the hydrogen production-specific consumption is, on average, 77 kWh/kgH2. The hydrogen compressor energy requirement is, on average, 15 kWh/kgH2 (data referred to the driving compressed air). The value is higher than data found in literature (4.4–9.3 kWh/kgH2), but the difference can be attributed to the small size of the considered compressor and the choice to limit the compression stages.

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“…S anchez-Diaz et al [24] studied different alternatives of energy storage systems to compensate the intermittency of the sources. They reported that among these alternatives, hydrogen storage systems present several advantages, such as its low investment costs and inexistent self-discharge, but comparatively, it presents low efficiency.…”

Section: Previous Workmentioning

confidence: 99%