Model-based behaviour of a high temperature electrolyser system operated at various loads

Petipas, Floriane; Brisse, Annabelle; Bouallou, Chakib

doi:10.1016/j.jpowsour.2013.03.027

Cited by 84 publications

(71 citation statements)

References 14 publications

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“…At high temperatures, electricity requirements for the water splitting process decrease, so it is possible to operate such electrolyzers at thermoneutral potential (corresponding to 100% stack efficiency) [28].…”

Section: Electrolyzermentioning

confidence: 99%

Hydrogen Islands – Utilization of Renewable Energy for an Autonomous Power Supply

Barbir

2016

Hydrogen Science and Engineering : Materials, Processes, Systems and Technology

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The World is facing an imminent shift from the present unsustainable energy system, primarily based on utilization of fossil fuels, to a new sustainable energy system based on renewable energy sources. This transition may have already begun, as solar PV and wind energy installations are growing at unprecedented rates. Renewable energy sources are more than sufficient to satisfy all the energy needs of today's world and technologies for their utilization are available. It is therefore possible to envision an energy system solely based on utilization of renewable energy (Figure 46.1) [1]. Various forms of renewable energy, primarily solar, wind, and hydro can be converted into electricity and heat. This transformation may be accomplished in centralized power plants (probably a better word would be energy plants), but also a significant portion may be accomplished locally or even individually. In some cases economy of scale may favor larger units (e.g., large wind turbines cost less per kW then small ones) but in some cases mass produced small units may also result in lower cost. In such a system there are obvious needs: (i) to store energy -to overcome fluctuations in availability of renewable energy sources; (ii) to transport energy over mid and long distances; and (iii) to fuel the transportation sector (land, sea, and air). Hydrogen could satisfy those needs. Electricity and hydrogen are the only noncarbon currencies that, together, can supply the full menu of energy services. A vision of an energy system of the future presented here in which hydrogen plays a significant role is logical and sustainable. However, such a system should not be called a "hydrogen economy," but rather "hydricity" or "hydrogen-electricity economy" [2].While a future energy system based only on renewable energy sources with electricity and hydrogen as the main energy carriers is technically feasible, a more difficult task is to define a path of how to get there from here. One problem is the inherently high cost of renewable energy. Hydrogen makes the renewable energy even more expensive. An energy system based primarily on renewable energy sources would be impossible without the storage, transport, and fuel features that hydrogen offers. However, renewable energy sources can

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Section: Electrolyzermentioning

confidence: 99%

Hydrogen Islands – Utilization of Renewable Energy for an Autonomous Power Supply

Barbir

2016

Hydrogen Science and Engineering : Materials, Processes, Systems and Technology

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“…Although several system simulation analyses present thermodynamic advantages when no sweep gas is used to blow out the produced oxygen from the anode, most of the experiments published with SOEC cells have been carried out with a sweep gas stream due to safety reasons [11,12,14,15]. Therefore, in this study it was decided to maintain this gas stream.…”

Section: Electrolysis System Designmentioning

confidence: 99%

“…To reduce the computational cost and simplify the analysis, the SOEC system is analysed independently of the power and heat source. In the bibliography it can be found studies that have addressed the capability of SOEC systems working at part load [11,12]. This work aims at simulating and optimizing a SOEC system under more realistic part load conditions.…”

Section: Introductionmentioning

confidence: 99%

Part load operation of a solid oxide electrolysis system for integration with renewable energy sources

Sanz-Bermejo

Muñoz-Antón

González-Aguilar

et al. 2015

International Journal of Hydrogen Energy

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“…The temperature dependence of the Gibbs free energy change is determined by a tertiary polynomial according to Petipas et al [32]:…”

Section: Electrochemical Modelmentioning

confidence: 99%

“…This temperature gradient results in thermal stress along the cell. Assuming a maximum tolerable thermal gradient of 10 K/cm [32,39] results in a temperature gradient limitation of 100 K for the given set-up. Based on an inlet temperature of 850 C the temperature change with applied cell voltage or specific electrical energy consumption P H2 , respectively, is shown in Fig.…”

Section: Operation With High Temperature Heat Integrationmentioning

confidence: 99%

A detailed techno-economic analysis of heat integration in high temperature electrolysis for efficient hydrogen production

Buttler

Koltun

Wolf

et al. 2015

International Journal of Hydrogen Energy

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Model-based behaviour of a high temperature electrolyser system operated at various loads

Cited by 84 publications

References 14 publications

Hydrogen Islands – Utilization of Renewable Energy for an Autonomous Power Supply

Hydrogen Islands – Utilization of Renewable Energy for an Autonomous Power Supply

Part load operation of a solid oxide electrolysis system for integration with renewable energy sources

A detailed techno-economic analysis of heat integration in high temperature electrolysis for efficient hydrogen production

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