Hendrik Langnickel

Understanding current and future residential energy demand is crucial for energy system planning and demand-side management. In this database, we generate high-resolution (1-minute) residential multienergy load profiles for Auckland and Christchurch (New Zealand) and Oldenburg and Karlsruhe (Germany). We use resLoadSIM, a stochastic bottom-up tool, to simulate household electricity and heating demand by aggregating individual appliance consumption based on occupant behaviour and statistical data. Based on projected electrification trends, we simulate future energy demand scenarios, by integrating electric vehicle (EV) adoption and electrification of space heating. The resulting dataset provides valuable insights into how residential load profiles may evolve. The data can be used by researchers and urban planners as inputs into energy capacity expansion planning models, grid stability analyses, and demand-side management strategies.

The large-scale storage of hydrogen in salt caverns, modelled on today’s natural gas storage, is a promising approach to storing renewable energy over a large power range and for the required time period. An essential subsystem of the overall gas storage is the surface facility and, in particular, the compressor system. The future design of compressor systems for hydrogen storage strongly depends on the respective boundary conditions. Therefore, this work analyses the requirements of compressor systems for cavern storage facilities for the storage of green hydrogen, i.e., hydrogen produced from renewable energy sources, using the example of Lower Saxony in Germany. In this course, a hydrogen storage demand profile of one year is developed in hourly resolution from feed-in time series of renewable energy sources. The injection profile relevant for compressor operation is compared with current natural gas injection operation modes.

Solid oxide fuel cells (SOFCs) convert a variety of fuels like hydrogen, e‐gas, or biogas into electricity with high efficiency. Such fuels are interesting for reaching a production of electricity entirely from renewable energy sources. Sustainable fuels will play an important role because they are independent of fluctuating sources such as solar and wind. E‐gas is a product of power‐to‐X concepts using electricity from renewable sources. Biogas is a renewable source and consists of 40%–70% CH₄ and 30%–60% CO₂. One advantage of the SOFC is that direct internal reforming of biogas or other hydrocarbons is possible. Impurities like sulfur components, which are present in fuels like biogas, can have negative effects on the internal reforming of the fuel in the SOFC and the electrochemical reaction as well. These effects have been widely investigated. The current study presents a new, time‐efficient approach to investigating sulfur poisoning. It analyses how the electrochemical reaction and the methane reforming process are affected by H₂S via the evaluation of iV‐curves recorded with and without sulfur. It yields the well‐known parameter voltage drop occurring due to sulfur exposure.