Refine
Document Type
- Part of a Book (10)
- Article (6)
- conference talk (3)
- Part of Periodical (2)
- Report (2)
- conference proceeding (article) (1)
- Preprint (1)
Is part of the Bibliography
- no (25)
Keywords
- Power-to-Gas (9)
- Energiespeicher (4)
- Erneuerbare Energien (4)
- Archaeen (3)
- Energiewende (3)
- Rieselbett-Bioreaktor (3)
- Biological methanation (2)
- Biologische Methanisierung (2)
- Klimaneutralität (2)
- Liquid hold-up maximization (2)
- Methane production (2)
- Methanothermobacter (2)
- Methanothermococcus (2)
- Optimized packing-organism combination (2)
- Sektorenkopplung (2)
- Systemintegration (2)
- Trickle-bed reactor (2)
- BIOCATALYTIC METHANATION (1)
- Biological CO2-Methanation (1)
- Braunkohle (1)
- CARBON-DIOXIDE (1)
- CO2-methanation (1)
- CSTR (1)
- Chemical CO2-Methanation (1)
- Cost-development (1)
- Electrolysis (1)
- Elektrochemische Energieumwandlung (1)
- Elektrochemisches Verfahren (1)
- Energieversorgung (1)
- Erneuerbare Energien, Klimaneutralität, Energiewende, Sektorenkopplung, Power-to-Gas (1)
- Forschung (1)
- Forschungsbericht (1)
- Künstliche Intelligenz (1)
- MASS-TRANSFER (1)
- Power-to-Methane (1)
- Pumpspeicherwerk (1)
- Reactor concept (1)
- Sektorkopplung (1)
- Speicherbedarf (1)
- Speicherkapazität (1)
- Stromversorgung <Elektrotechnik> (1)
- THERMOAUTOTROPHICUS (1)
- Tagebau (1)
- Thermophilic archaea (1)
- biologische Methanisierung (1)
- bubble column reactor (1)
- decarbonization (1)
- energy storage (1)
- energy transition (1)
- erneuerbare Energie (1)
- hydrogen (1)
- membrane reactor (1)
- methanation (1)
- renewable energy (1)
- standardization (1)
- supply security (1)
- surplus energy (1)
- system costs (1)
Institute
Begutachtungsstatus
- peer-reviewed (6)
Der Anteil fluktuierender erneuerbarer Energien im deutschen Strommix steigt. Um die Netzstabilität zu erhalten, Fluktuationen im Dargebot nach Wetterlage und saisonal auszugleichen sind absehbar ab ca. 2030 große Stromspeicherkapazitäten erforderlich. Wasser-Pumpspeicherwerke sind derzeit die einzige langjährig erprobte Technologie, die künftig in Braunkohletagebauen, welche im Zuge der Energiewende aufgegeben werden, errichtet werden könnten. Eine Überschlagsrechnung am Beispiel eines Pumpspeicherwerks in verschiedenen Tagebauen zeigt, dass diese mit bis zu 400 GWh ein signifikantes technisches Speicherpotenzial haben.
Forschung 2019
(2019)
There are several approaches to classifying energy storage systems (see Chaps. 1 and 2). Storage systems are used in a large number of different technologies at various stages of development, and in a wide range of application areas (see Chaps. 3 to 5). This chapter compares the capabilities of the different storage systems using the following criteria:This comparison of storage systems also provides a convenient overview of the various storage systems and their capabilities.
The hydrogen gas-to-liquid mass transfer is the limiting factor in biological methanation. In trickle-bed reactors, mass transfer can be increased by high flow velocities in the liquid phase, by adding a packing material with high liquid hold-up or by using methanogenic archaea with a high methane productivity. This study developed a polyphasic approach to address all methods at once. Various methanogenic strains and packings were investigated from a microbial and hydrodynamic perspective. Analyzing the ability to produce high-quality methane and to form biofilms, pure cultures of Methanothermobacter performed better than those of the genus Methanothermococcus. Liquid and static hold-up of a packing material and its capability to facilitate attachment was not attributable to a single property. Consequently, it is recommended to carefully match organism and packing for optimized performance of trickle-bed reactors. The ideal combination for the ORBIT system was identified as Methanothermobacter thermoautotrophicus IM5 and DuraTop (R).
Wie groß ist der Speicherbedarf in Deutschland in der weiteren Umsetzung der Energiewende? Welche Rolle spielen Batteriespeicher, Pumpspeicher, Power-to-Gas etc. im Kontext anderer Flexibilitätsoptionen auf den verschiedenen Netzebenen? Wie entwickelt sich der Markt für Batterien und Wasserstoff? In unserer Agora-Speicherstudie haben wir auch erstmalig den Begriff Power-to-X definiert und damit die bis dato entstandenen Begriffe Power-to-Gas, Power-to-Liquids, Power-to-Products, Power-to-Chemicals etc. zusammengefasst.
Energy storage systems (in the past as well as today) are one significant part in the energy supply. The following three chapters describe how storage demand will develop in the future for the electricity, heat, and traffic sectors, as well as for non-energetic consumption of fossil resources (the chemical industry). Chapter 3, the core of this section on storage demand, makes clear how and why the electricity sector is the nucleus of the energy supply of all sectors and why it creates essential bridges between electricity, heat, and transport sectors, as well as with the chemical industry.
If planned electricity network expansion takes place and flexibilities in generation and consumption are fully exploited, the demand for electricity storage, according to present estimates, will only reach a significant scale at 60–80% shares of renewable energy in the power supply. Network expansion has a great impact on the storage demand, as well as flexible power generation in power plants, combined heat and power (CHP), and flexible consumption via demand-side management (DSM). Four studies in the context of storage demand and the role of energy storage systems for flexibility are comprehensively addressed. The authors and the co-authors were themselves participants in these studies, which will be complemented by ongoing research. A meta-study summary of the main results is shown in Abschn. 3.7, and these results are compared with seven further studies.
Electricity is becoming the primary source of energy, a trend that is particularly apparent through the coupling of the electricity sector with other energy sectors. In addition to the established links between the electricity and heating sectors using combined heat and power (CHP), which is supplemented by electric heat-pumps and power-to-heat (PtH), other new links are also emerging. These links are manifesting in the form of electro-mobility and electric fuels in the electricity and transport sectors; and in the electricity and gas sector they are appearing in the form of power-to-gas (PtG). The production of basic chemical materials such as methanol or polymers using electrical energy, water, and CO2 will also play a role in the future. However, the latter will not be dealt with explicitly here. Instead we will consider in detail other aspects of electricity as a primary energy source and its integration and application for energy storage.
How is energy storage integrated and currently implemented in the electricity supply, heating supply, and mobility sectors? This chapter provides both theoretical and practical answers to that question. The chapter focuses on the integration of renewable energy. Cross-sectoral energy storage systems that link the electricity, heating, and mobility sectors are discussed in Kap. 14. This chapter focuses on storage integration in the electricity sector. After considering stand-alone networks, the chapter uses practical examples to analyze the various storage applications in the European network. The chapter concludes with a discussion of storage integration in the heating and transportation sectors.
he hydrogen gas-to-liquid mass transfer is the limiting factor in biological methanation. In a trickle-bed reactor, mass transfer can be increased by high flow velocities in the liquid phase, by adding a packing material with high liquid hold-up, or by choosing methanogenic archaea with a high methane productivity. This study analyzed various packings and methanogenic strains from a hydrodynamic and microbial perspective. By analyzing twelve pure cultures of thermophilic methanogens for their ability to produce high quality methane and to form biofilms on different packings, strains of Methanothermobacter were found to perform better than thus of the genus Methanothermococcus. Best methane production and adherence was observed on DuraTop®, Bioflow 9, and filter foam. DuraTop® and Bioflow 9 had also a high dynamic liquid hold-up, but the maximum hold-up was determined for expanded clay. The ideal combination for use in the ORBIT-trickle-bed reactor was identified as Methanothermobacter thermoautotrophicus IM5 and DuraTop®.