@article{DotzauerPfeifferLaueretal.2019, author = {Dotzauer, Martin and Pfeiffer, Diana and Lauer, Markus and Pohl, Marcel and Mauky, Eric and B{\"a}r, Katharina and Sonnleitner, Matthias and Z{\"o}rner, Wilfried and Hudde, Jessica and Schwarz, Bj{\"o}rn and Faßauer, Burkhardt and Dahmen, Markus and Rieke, Christian and Herbert, Johannes and Thr{\"a}n, Daniela}, title = {How to measure flexibility}, volume = {134 (2019)}, journal = {Renewable Energy}, subtitle = {Performance indicators for demand driven power generation from biogas plants}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0960-1481}, doi = {https://doi.org/10.1016/j.renene.2018.10.021}, pages = {135 -- 146}, year = {2019}, abstract = {Flexible power provision from biogas can significantly contribute to energy systems with high shares of renewables. However, the characteristics and demands for this flexibility are not clearly defined or measured. In this paper eight indicators are defined to shape "flexibility" and perform a downstream investigation of eight research projects focusing on flexible energy provision of biogas plants. The indicators are structured in three dimensions (1) velocity (ramps) by which the system can be modulated, (2) power range (bandwidth) and (3) duration for specific load conditions. Based on these indicators bottlenecks for the flexibility potential were identified. One crucial result shows that short-term flexibility of biogas plants is mainly driven by properties of the combined heat and power unit (velocity and bandwidth). The long-term flexibility depends mainly on gas storage, mode of operation and ability for modulation of the target gas production.}, language = {en} } @article{BaerWagenederSolkaetal.2020, author = {B{\"a}r, Katharina and Wageneder, Stefanie and Solka, Felix and Saidi, Abdessamad and Z{\"o}rner, Wilfried}, title = {Flexibility Potential of Photovoltaic Power Plant and Biogas Plant Hybrid Systems in the Distribution Grid}, volume = {43}, journal = {Chemical Engineering \& Technology}, number = {8}, publisher = {Wiley}, address = {Weinheim}, issn = {1521-4125}, doi = {https://doi.org/10.1002/ceat.202000025}, pages = {1571 -- 1577}, year = {2020}, abstract = {The potential of combining biogas and photovoltaic (PV) power plants in hybrid systems in the German distribution grid is analyzed. The focus of the present research is on balancing the intermittent power supply from PV power plants with the controllable power production of combined heat and power (CHP) units of biogas plants within a period of seconds. To achieve an increase of the total energy feed-in of biogas and PV power plants to the electricity grid, a biogas plant energy management system is described. System parameters, such as the variable feed-in of PV power plants or power ramps of the start-up process of controllable biogas plant CHP unit, are described and adapted to the global installed capacity of PV power plant and biogas plants in the German distribution grid.}, language = {en} } @article{BesnerMehtaZoerner2023, author = {Besner, Rebekka and Mehta, Kedar and Z{\"o}rner, Wilfried}, title = {How to Enhance Energy Services in Informal Settlements?}, volume = {16}, pages = {4687}, journal = {Energies}, subtitle = {Qualitative Comparison of Renewable Energy Solutions}, number = {12}, publisher = {MDPI}, address = {Basel}, issn = {1996-1073}, doi = {https://doi.org/10.3390/en16124687}, year = {2023}, abstract = {More than half of the urban population of Sub-Saharan Africa lives in informal housing conditions. While urban areas are, in general, characterized by a high electrification rate, residents of informal settlements are still affected by energy poverty, the use of traditional energy sources and unreliable electricity supply. The aim of the study is to give an overview of different renewable-energybased solutions which are able to improve local energy provision. These are Solar Home Systems, Mini-Grids, and Energy-Hubs. The technologies are compared to another option for improving energy supply, namely Grid Expansion. The analysis is based on 24 Key Performance Indicators, which can be classified into technical, economic, environmental, social, and political dimensions. The selection of indicators is based on the challenges prevalent in informal settlements that impede a comprehensive, sustainable energy supply. The literature-based indices are used to determine which of the four technologies is a suitable solution for minimizing the challenges prevailing in informal settlements. The resulting matrix provides a holistic comparison and serves as a decision aid in selecting the appropriate technology for future projects in informal settlements, depending on local conditions and the needs of the population. The results show that the Energy-Hub is a valid alternative for energy supply improvement in Informal Settlements.}, language = {en} } @inproceedings{LauermannBetzMehtaetal.2020, author = {Lauermann, Magdalena and Betz, Florian and Mehta, Kedar and Thevs, Niels and Ehrenwirth, Mathias and Z{\"o}rner, Wilfried and Cyffka, Bernd}, title = {Preservation of Selected Ecosystem Services in the Floodplains of the Naryn River (Kyrgyzstan): Introducing the {\"O}koFlussPlan Project}, booktitle = {Beitr{\"a}ge zum 50. und 51. Jahrestreffen des Arbeitskreises Hydrologie 2018 in Koblenz und 2019 in Heidelberg}, publisher = {Institut f{\"u}r Geographie, Universit{\"a}t Augsburg}, address = {Augsburg}, url = {https://www.uni-augsburg.de/de/fakultaet/fai/geo/forschung/geographicaaugustana/}, pages = {47 -- 53}, year = {2020}, language = {en} } @article{MehtaEhrenwirthZoerneretal.2023, author = {Mehta, Kedar and Ehrenwirth, Mathias and Z{\"o}rner, Wilfried and Greenough, Richard}, title = {Need of energy transition at roof of the world}, volume = {2023}, pages = {101271}, journal = {Energy for Sustainable Development}, subtitle = {Correlative approach to interpret energy identity of high-altitude Central Asian communities}, number = {76}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2352-4669}, doi = {https://doi.org/10.1016/j.esd.2023.101271}, year = {2023}, language = {en} } @article{ZoernerMahomedZuluetal.2020, author = {Z{\"o}rner, Wilfried and Mahomed, Nawaz and Zulu, Ackim and Bader, Tobias and Tenthani, Chifundo and Cuamba, Boaventura and Chingosho, Hilton}, title = {Meta-profile and competencies for harmonisation of higher education in sector-specific technology areas}, volume = {8}, journal = {Tuning Journal for Higher Education}, subtitle = {A case study of Renewable Energy in Southern Africa}, number = {1}, publisher = {University of Deusto}, address = {Bilbao}, issn = {2386-3137}, pages = {75 -- 97}, year = {2020}, language = {en} } @inproceedings{GroeschVogtSaidietal.2020, author = {Gr{\"o}sch, Norbert and Vogt, Regine and Saidi, Abdessamad and Z{\"o}rner, Wilfried}, title = {Repoweringmaßnahmen hinsichtlich zuk{\"u}nftiger Aufgaben von Biogasanlagen}, booktitle = {Schriftenreihe Umweltingenieurwesen Agrar- und Umweltwissenschaftliche Fakult{\"a}t, Band 95, Tagungsband 14. Rostocker Bioenergieforum / 19. DIALOG Abfallwirtschaft MV}, subtitle = {Ergebnisse aus dem Projekt REzAB}, publisher = {Universit{\"a}t Rostock, Agrar- und Umweltwissenschaftliche Fakult{\"a}t}, address = {Rostock}, isbn = {978-3-86009-507-2}, doi = {https://doi.org/10.18453/rosdok_id00002650}, pages = {133 -- 142}, year = {2020}, language = {de} } @inproceedings{StarkSaidiZoerner2020, author = {Stark, Matthias and Saidi, Abdessamad and Z{\"o}rner, Wilfried}, title = {KomBio-Speicher}, booktitle = {Schriftenreihe Umweltingenieurwesen Agrar- und Umweltwissenschaftliche Fakult{\"a}t, Band 95, Tagungsband 14. Rostocker Bioenergieforum / 19. DIALOG Abfallwirtschaft MV}, subtitle = {Entwicklung eines neuartigen Dampfspeichersystems f{\"u}r ein flexibles Biomasse-Heizkraftwerk zur Erh{\"o}hung der Systemstabilit{\"a}t}, publisher = {Universit{\"a}t Rostock, Agrar- und Umweltwissenschaftliche Fakult{\"a}t}, address = {Rostock}, isbn = {978-3-86009-507-2}, doi = {https://doi.org/10.18453/rosdok_id00002650}, pages = {345 -- 354}, year = {2020}, language = {de} } @inproceedings{WagenederGroeschSaidietal.2020, author = {Wageneder, Stefanie and Gr{\"o}sch, Norbert and Saidi, Abdessamad and Wagner, Robert and Gl{\"o}tzl, Melanie and Gleich, Jasmin and Hermann, Christiane and Mielke, Sophie and Freydank, Christian and Z{\"o}rner, Wilfried}, title = {L{\"o}sungsans{\"a}tze zur technischen Anpassung bestehender Biogasanlagen f{\"u}r die Nutzung faseriger Reststoffe}, booktitle = {Schriftenreihe Umweltingenieurwesen Agrar- und Umweltwissenschaftliche Fakult{\"a}t, Band 95, Tagungsband 14. Rostocker Bioenergieforum / 19. DIALOG Abfallwirtschaft MV}, subtitle = {Auswahl der zu untersuchenden Anlagen im Rahmen des Projekts „LaRA"}, publisher = {Universit{\"a}t Rostock, Agrar- und Umweltwissenschaftliche Fakult{\"a}t}, address = {Rostock}, isbn = {978-3-86009-507-2}, doi = {https://doi.org/10.18453/rosdok_id00002650}, pages = {409 -- 414}, year = {2020}, language = {de} } @article{StarkContiSaidietal.2019, author = {Stark, Matthias and Conti, Fosca and Saidi, Abdessamad and Z{\"o}rner, Wilfried and Greenough, Richard}, title = {Steam storage systems for flexible biomass CHP plants}, volume = {2019}, pages = {105321}, journal = {Biomass and Bioenergy}, subtitle = {evaluation and initial model based calculation}, number = {128}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0961-9534}, doi = {https://doi.org/10.1016/j.biombioe.2019.105321}, year = {2019}, language = {en} }