Residential Energy Supply Concept with Integration of Renewable Energies and Energy Storage

Pauksztat, Anja; Saliger, Rainer; Boyanov, Neven

doi:10.1002/ceat.201800634

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…The required quantity and flow rate of H 2 for microgrid application for seasonal storage have been investigated previously, wherein 5.1 MT of H 2 was proposed to be stored as compressed gas at 45 bar. In the present study, we will assume that H 2 is produced during 5 months of summer for 8 h per day and is used during 3 months of the winter at 12 h per day.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Specifically, while it is possible to dehydrogenate EtOH up to 90% conversion, the high conversion of EtOH would also favor the formation of Ru-OH from trace water to form the deactivated Ru-OAc species (see Figure S9 in the SI). 21 The required quantity and flow rate of H 2 for microgrid application for seasonal storage have been investigated previously, 32 wherein 5.1 MT of H 2 was proposed to be stored as compressed gas at 45 bar. In the present study, we will assume that H 2 is produced during 5 months of summer for 8 h per day and is used during 3 months of the winter at 12 h per day.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Ethanol as a Liquid Organic Hydrogen Carrier for Seasonal Microgrid Application: Catalysis, Theory, and Engineering Feasibility

Tran

Johnson

Brooks

et al. 2021

ACS Sustainable Chem. Eng.

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In this work, we describe the benefits and challenges of a green approach to seasonal energy storage using ethanol as a liquid organic hydrogen carrier (LOHC). We evaluate the cycling efficiency of hydrogen release from ethanol (EtOH) to form ethyl acetate (EtOAc) as the spent LOHC and the subsequent regeneration of EtOH from EtOAc catalyzed by a single molecular catalyst, Ru-MACHO, at a moderate pressure of H 2 , mild reaction temperature, and high selectivity. From experimental and computational studies, we were able to minimize catalyst deactivation, regenerate the active catalyst post reactions, and establish the energy profile of the deactivation pathway relative to the on-cycle pathway catalyzed by Ru-MACHO. Based upon these findings, we performed a reactor design analysis to determine the footprint of an EtOH-based storage system to provide 85 MWh of energy by storing 5 metric tons (MT) of H 2 . We conclude that the heating and cooling required to maintain H 2 partial pressure present a significant engineering challenge for widespread deployment of this system.

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Section: Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Ethanol as a Liquid Organic Hydrogen Carrier for Seasonal Microgrid Application: Catalysis, Theory, and Engineering Feasibility

Tran

Johnson

Brooks

et al. 2021

ACS Sustainable Chem. Eng.

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“…The stored hydrogen would be used to generate electricity in the winter using fuel cells when solar power cannot keep up with the demand. Such an approach has been investigated previously [101]. In this previous study, energy storage on the scale of 100 MWh was shown to meet the needs for a micro grid neighbourhood by storing ca.…”

Section: Lohcs For Seasonal Storagementioning

confidence: 99%

Research and development of hydrogen carrier based solutions for hydrogen compression and storage

et al. 2022

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Recently, the industrial and public interest in hydrogen technologies has strongly risen, since hydrogen is the ideal means for medium to long term energy storage, transport and usage in combination with renewable and green energy supply. Therefore, in a future energy system the production, storage and usage of green hydrogen is a key technology. Hydrogen is and will in future be even more used for industrial production processes as reduction agent or for the production of synthetic hydrocarbons, especially in the chemical industry and refineries. Under certain conditions material based systems for hydrogen storage and compression offer advantages over the classical systems based on gaseous or liquid hydrogen. This includes in particular lower maintenance costs, higher reliability and safety. Hydrogen storage is possible at pressures and temperatures much closer to ambient conditions. Hydrogen compression is possible without any moving parts and only by using waste heat. In this paper, the newest developments of hydrogen carriers for storage and compression are summarized. In addition, an overview of the different research activities in this field are given.

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“…One potential application that has been investigated previously is the use of hydrogen in a microgrid application for seasonal storage [55]. In this study, 5.1 MT of hydrogen was proposed to be stored as compressed gas, which requires a total hydrogen storage volume of 1265 m 3 at 45 bar.…”

Section: Use Case Examplementioning

confidence: 99%

Research Requirements to Move the Bar forward Using Aqueous Formate Salts as H2 Carriers for Energy Storage Applications

Grubel¹,

Su²,

Kothandaraman³

et al. 2020

JEPT

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In this perspective on hydrogen carriers, we focus on the needs for the development of robust active catalysts for the release of H2 from aqueous formate solutions, which are non-flammable, non-toxic, thermally stable, and readily available at large scales at reasonable cost. Formate salts can be stockpiled in the solid state or dissolved in water for long term storage and transport using existing infrastructure. Furthermore, formate salts are readily regenerated at moderate pressures using the same catalyst as for the H2 release. There have been several studies focused on increasing the activity of catalysts to release H2 at moderate temperatures, i.e., < 80 °C, below the operating temperature of a proton exchange membrane (PEM) fuel cell. One significant challenge to enable the use of aqueous formate salts as hydrogen carriers is the deactivation of the catalyst under operating conditions. In this work we provide a review of the most efficient heterogeneous catalysts that have been described in the literature, their proposed modes of deactivation, and the strategies reported to reactivate them. We discuss potential pathways that may lead to deactivation and strategies to mitigate it in a variety of H2 carrier applications. We also provide an example of a potential use case employing formate salts solutions using a fixed bed reactor for seasonal storage of energy for a microgrid application.

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Residential Energy Supply Concept with Integration of Renewable Energies and Energy Storage

Cited by 4 publications

References 11 publications

Ethanol as a Liquid Organic Hydrogen Carrier for Seasonal Microgrid Application: Catalysis, Theory, and Engineering Feasibility

Ethanol as a Liquid Organic Hydrogen Carrier for Seasonal Microgrid Application: Catalysis, Theory, and Engineering Feasibility

Research and development of hydrogen carrier based solutions for hydrogen compression and storage

Research Requirements to Move the Bar forward Using Aqueous Formate Salts as H2 Carriers for Energy Storage Applications

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