Power-to-hydrogen &amp; district heating: Technology-based and infrastructure-oriented analysis of (future) sector coupling potentials

Böhm, Hans; Moser, Simon; Puschnigg, Stefan; Zauner, Andreas

doi:10.1016/j.ijhydene.2021.06.233

Cited by 47 publications

(16 citation statements)

References 58 publications

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“…13,367 Thirdly, the role of heat networks 375,376 and hydrogen 32,34 in decarbonising the housing stock should be consolidated as early as possible, while also accounting for potential synergies between power-to-hydrogen and heat networks. 377,378…”

Section: Practical Implicationsmentioning

confidence: 99%

Heterogeneous preferences for living in a hydrogen home: an advanced multigroup analysis

Gordon,

Balta-Ozkan,

Haq

et al. 2024

Sustainable Energy Fuels

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Section: Practical Implicationsmentioning

confidence: 99%

Heterogeneous preferences for living in a hydrogen home: an advanced multigroup analysis

Gordon,

Balta-Ozkan,

Haq

et al. 2024

Sustainable Energy Fuels

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“…Although the proposed scheme is suggested to operate with low-temperature electrolyzers (see Section 2), this work includes two types of electrolyzers in the assessment: a low-temperature electrolyzer operating with liquid water at 90 • C and a high-temperature electrolyzer operating with steam at 900 • C [62]. This is to include a future scenario in which the high-temperature electrolyzer technology is assumed to be available, which will facilitate heat integration [63]. It is assumed that 60% of the losses from electrolyzer are recoverable (this number is higher for the case with a low-temperature electrolyzer if a heat pump to enable the recovery of the heat losses at a temperature that is useful for DH is installed), which is an assumption line with [62].…”

Section: Process Sizingmentioning

confidence: 99%

Thermochemical Energy Storage with Integrated District Heat Production–A Case Study of Sweden

et al. 2023

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The implementation of electricity-charged thermochemical energy storage (TCES) using high-temperature solid cycles would benefit the energy system by enabling the absorption of variable renewable energy (VRE) and its conversion into dispatchable heat and power. Using a Swedish case study, this paper presents a process for TCES-integrated district heating (DH) production, assesses its technical suitability, and discusses some practical implications and additional implementation options. The mass and energy flows of a biomass plant retrofitted with an iron-based redox loop are calculated for nine specific scenarios that exemplify its operation under electricity generation mixes that differ with respect to variability and price. In addition, the use of two types of electrolyzers (low-temperature and high-temperature versions) is investigated. The results show that for the Swedish case, the proposed scheme is technically feasible and capable of covering the national DH demand by making use of the existing DH plants, with an estimated process energy efficiency (electricity to heat) of 90%. The results also show that for a retrofit of the entire Swedish DH fleet, the required inventories of iron are approximately 2.8 Mt for the intermediate scenario, which represents 0.3% and 11.0% of the national reserves and annual metallurgical production rates of the national industry, respectively. In addition to the dispatchable heat, the process generates a significant amount of nondispatchable heat, especially for the case that employs low-temperature electrolyzers. This added generation capacity allows the process to cover the heat demand while decreasing the maximum capacity of the charging side computed herein.

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“…As discussed in Böhm et al (2021) [76], the production of H 2 with an electrolyser and (district) heating systems have several synergies, that should be exploited in terms of achieving a high primary energy efficiency and further to increase the macro-and business economic efficiency.…”

Section: Techno-economic Assessmentmentioning

confidence: 99%

Multidisciplinary Assessment of a Novel Carbon Capture and Utilization Concept including Underground Sun Conversion

et al. 2022

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The current work investigates the feasibility of a novel Carbon Capture and Utilization (CCU) approach—also known as Underground Sun Conversion (USC) or geo-methanation. The overall objective of the current work is a comprehensive assessment on the technical, economic and legal aspects as well as greenhouse gas impacts to be concerned for establishing USC technology concept. This is achieved by applying multidisciplinary research approach combining process simulation, techno-economic and greenhouse gas assessment as well as legal analysis allows answering questions about technical, economic feasibility and greenhouse gas performance as well as on legal constraints related to large scale CCU using geo-methanation in depleted hydrocarbon reservoirs. CO2 from the industry and renewable H2 from the electrolyser are converted to geomethane in an underground gas storage and used in industry again to close the carbon cycle. Process simulation results showed the conversion rates vary due to operation mode and gas cleaning is necessary in any case to achieve natural gas grid compliant feed in quality. The geomethane production costs are found to be similar or even lower than the costs for synthetic methane from Above Ground Methanation (AGM). The GHG-assessment shows a significant saving compared to fossil natural gas and conventional power-to-gas applications. From a legal perspective the major challenge arises from a regulative gap of CCU in the ETS regime. Accordingly, a far-reaching exemption from the obligation to surrender certificates would be fraught with many legal and technical problems and uncertainties.

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Power-to-hydrogen & district heating: Technology-based and infrastructure-oriented analysis of (future) sector coupling potentials

Cited by 47 publications

References 58 publications

Heterogeneous preferences for living in a hydrogen home: an advanced multigroup analysis

Heterogeneous preferences for living in a hydrogen home: an advanced multigroup analysis

Thermochemical Energy Storage with Integrated District Heat Production–A Case Study of Sweden

Multidisciplinary Assessment of a Novel Carbon Capture and Utilization Concept including Underground Sun Conversion

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