TY  - CHAP
A1  - Kaspar, K.
A1  - Groebel, Simone
A1  - Kuperjans, Isabel
A1  - Dielmann, Klaus-Peter
A1  - Selmer, Thorsten
T1  - Charakterisierung der Biozönose von Biogasfermentern in Abhängigkeit verschiedener Substrate
T2  - Biogas 2013 : 6. Innovationskongress, 23. - 24.05.2013, Osnabrück, Tagungsband
Y1  - 2013
SN  - 978-3-9813776-3-7
SP  - 69
EP  - 74
PB  - Profair Consult+Project
CY  - Hildesheim
ER  - 
TY  - CHAP
A1  - Jordan, Frank
A1  - Katz, Christiane
A1  - Pieper, Martin
T1  - Online-Kollaboration in der Mathematik: Ein Design-Based-Research-Projekt
T2  - Forschungsimpulse für hybrides Lehren und Lernen an Hochschulen
N2  - Die Studie erörtert anhand eines Fallbeispiels aus der Mathematik für Ingenieur*innen, wie didaktische Gestaltungsprinzipien für Soziale Präsenz, Kollaboration und das Lösen von praxisnahen Problemen mit mathematischem Denken in einer Online-Umgebung aussehen können. Hierfür zieht der
Beitrag den forschungsmethodologischen Rahmen Design-Based Research (DBR) hinzu und berichtet über Zwischenergebnisse. DBR wird an dieser Stelle als eine systematische Herangehensweise an kurzfristige Lehrveränderungen und als Chance auf dem Weg zu einer neuen Hochschullehre nach der COVID-19-Pandemie dargestellt, die theoretische und empirische Erkenntnisse mit Praxisverknüpfung und -relevanz vereint.
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:832-cos4-9465
SP  - 245
EP  - 261
PB  - TH Köln
CY  - Köln
ER  - 
TY  - JOUR
A1  - Jablonowski, Nicolai David
A1  - Kollmann, Tobias
A1  - Nabel, Moritz
A1  - Damm, Tatjana
A1  - Klose, Holger
A1  - Müller, Michael
A1  - Bläsing, Marc
A1  - Seebold, Sören
A1  - Krafft, Simone
A1  - Kuperjans, Isabel
A1  - Dahmen, Markus
A1  - Schurr, Ulrich
T1  - Valorization of Sida (Sida hermaphrodita) biomass for multiple energy purposes
JF  - GCB [Global Change Biology] Bioenergy
N2  - The performance and biomass yield of the perennial energy plant Sida hermaphrodita (hereafter referred to as Sida) as a feedstock for biogas and solid fuel was evaluated throughout one entire growing period at agricultural field conditions. A Sida plant development code was established to allow comparison of the plant growth stages and biomass composition. Four scenarios were evaluated to determine the use of Sida biomass with regard to plant development and harvest time: (i) one harvest for solid fuel only; (ii) one harvest for biogas production only; (iii) one harvest for biogas production, followed by a harvest of the regrown biomass for solid fuel; and (iv) two consecutive harvests for biogas production. To determine Sida's value as a feedstock for combustion, we assessed the caloric value, the ash quality, and melting point with regard to DIN EN ISO norms. The results showed highest total dry biomass yields of max. 25 t ha⁻¹, whereas the highest dry matter of 70% to 80% was obtained at the end of the growing period. Scenario (i) clearly indicated the highest energy recovery, accounting for 439 288 MJ ha⁻¹; the energy recovery of the four scenarios from highest to lowest followed this order: (i) ≫ (iii) ≫ (iv) > (ii). Analysis of the Sida ashes showed a high melting point of >1500 °C, associated with a net calorific value of 16.5–17.2 MJ kg⁻¹. All prerequisites for DIN EN ISO norms were achieved, indicating Sida's advantage as a solid energy carrier without any post-treatment after harvesting. Cell wall analysis of the stems showed a constant lignin content after sampling week 16 (July), whereas cellulose had already reached a plateau in sampling week 4 (April). The results highlight Sida as a promising woody, perennial plant, providing biomass for flexible and multipurpose energy applications.
Y1  - 2016
U6  - https://doi.org/10.1111/gcbb.12346
SN  - 1757-1707 (online)
SN  - 1757-1693 (print)
N1  - Special Issue: Perennial biomass crops for a resource constrained world
VL  - 9
IS  - 1
SP  - 202
EP  - 214
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Hoffstadt, Kevin
A1  - Pohen, Gino D.
A1  - Dicke, Max D.
A1  - Paulsen, Svea
A1  - Krafft, Simone
A1  - Zang, Joachim W.
A1  - Fonseca-Zang, Warde A. da
A1  - Leite, Athaydes
A1  - Kuperjans, Isabel
T1  - Challenges and prospects of biogas from energy cane as supplement to bioethanol production
JF  - Agronomy
N2  - Innovative breeds of sugar cane yield up to 2.5 times as much organic matter as conventional breeds, resulting in a great potential for biogas production. The use of biogas production as a complementary solution to conventional and second-generation ethanol production in Brazil may increase the energy produced per hectare in the sugarcane sector. Herein, it was demonstrated that through ensiling, energy cane can be conserved for six months; the stored cane can then be fed into a continuous biogas process. This approach is necessary to achieve year-round biogas production at an industrial scale. Batch tests revealed specific biogas potentials between 400 and 600 LN/kgVS for both the ensiled and non-ensiled energy cane, and the specific biogas potential of a continuous biogas process fed with ensiled energy cane was in the same range. Peak biogas losses through ensiling of up to 27% after six months were observed. Finally, compared with second-generation ethanol production using energy cane, the results indicated that biogas production from energy cane may lead to higher energy yields per hectare, with an average energy yield of up to 162 MWh/ha. Finally, the Farm²CBG concept is introduced, showing an approach for decentralized biogas production.
Y1  - 2020
U6  - https://doi.org/10.3390/agronomy10060821
SN  - 2073-4395
VL  - 10
IS  - 6
PB  - MDPI
CY  - Basel
ER  - 
TY  - CHAP
A1  - Handschuh, Nils
A1  - Stollenwerk, Dominik
A1  - Borchert, Jörg
T1  - Operation of thermal storage power plants under high renewable grid penetration
T2  - NEIS 2021: Conference on Sustainable Energy Supply and Energy Storage Systems
N2  - The planned coal phase-out in Germany by 2038 will lead to the dismantling of power plants with a total capacity of approx. 30 GW. A possible further use of these assets is the conversion of the power plants to thermal storage power plants; the use of these power plants on the day-ahead market is considerably limited by their technical parameters. In this paper, the influence of the technical boundary conditions on the operating times of these storage facilities is presented. For this purpose, the storage power plants were described as an MILP problem and two price curves, one from 2015 with a relatively low renewable penetration (33 %) and one from 2020 with a high renewable energy penetration (51 %) are compared. The operating times were examined as a function of the technical parameters and the critical influencing factors were investigated. The thermal storage power plant operation duration and the energy shifted with the price curve of 2020
increases by more than 25 % compared to 2015.
KW  - storage optimisation
KW  - storage dispatch
KW  - thermal storage
Y1  - 2021
SN  - 978-3-8007-5651-3
N1  - NEIS 2021: Conference on Sustainable Energy Supply and Energy Storage Systems. 13-14 September 2021. Hamburg, Germany
SP  - 261
EP  - 265
PB  - VDE Verlag
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Groebel, Simone
A1  - Werner, Frederik
A1  - Jörres, Niklas
A1  - Jansen, F.
A1  - Kasper, Katharina
A1  - Schiffels, Johannes
A1  - Sprenger, B.
A1  - Baumann, Marcus
A1  - Schöning, Michael Josef
A1  - Selmer, Thorsten
T1  - Entwicklung einer Sensor-Überwachung für Biogasanlagen auf Basis von Prozessdaten einer Parallelanlage
T2  - 10. Dresdner Sensor-Symposium : Dresden, 5. - 7. Dezember 2011 ; miniaturisierte analytische Verfahren, Hochtemperatur-Sensoren, Sensoren für Bioprozess- und Verfahrenstechnik, Sensoren für die Medizin, Chemische Verfahrenstechnik, Lebensmittelanalytik, innovative Sensorlösungen, Sensoren für die Wasserqualität, Selbstüberwachung / Gerald Gerlach ... (Hg.)
N2  - Beim Ausbau nachhaltiger, regenerativer Energieversorgung hat die Umwandlung von organischer Biomasse in Biogas ein großes Potential. Der zugrundeliegende, komplexe biologische Prozess wird noch immer unzureichend verstanden und bedarf systematischer Untersuchungen der Prozessparameter, um einen hohen Ertrag bei guter Gasqualität zu ermöglichen. Die Fragestellungen zur Entschlüsselung des Prozesses sind sowohl verfahrenstechnischer als auch mikrobiologischer Natur. Aus mikrobiologischer Sicht ist die Kenntnis der tatsächlich beteiligten prozesstragenden Mikroorganismen von erheblicher Bedeutung, aus verfahrenstechnischer Sicht die Kenntnis der physikalischen und chemischen Faktoren, welche die mikrobiologischen Prozesse und kontrollieren. Im Zusammenspiel aller dieser Parameter wird die Biogasbildung befördert oder behindert, bis zum Abbruch des Prozesses.
Eine mögliche Kontrollmethode ist die Messung der metabolischen Aktivität prozesstragender Organismen.
Diese soll, beruhend auf fundierten Prozessdaten, gewonnen durch eine Parallelanlage, mit einem lichtadressierbaren potentiometrischen Sensor-System (LAPS) realisiert werden. Dieser Sensor ist in der Lage, pH-Wert-änderungen zu detektieren, die durch den Stoffwechsel der auf dem Chip immobilisierten Organismen hervorgerufen werden, um eine Online-Überwachung von Biogasanlagen zu ermöglichen.
Y1  - 2011
SN  - 978-3-942710-53-4
U6  - https://doi.org/10.5162/10dss2011/4.3
N1  - Dresdner Beiträge zur Sensorik 43 ;
Dresdner Sensor-Symposium ; 10 ; 2011 ; Dresden ; Forschungsgesellschaft für Messtechnik, Sensorik und Medizintechnik ; Zehntes Dresdner Sensor-Symposium ; Dresdner Sensor-Symposium ; (10 ; 2011.12.05-07 ; Dresden)
SP  - 81
EP  - 84
PB  - TUDpress
CY  - Dresden
ER  - 
TY  - THES
A1  - Groebel, Simone
T1  - Zusammensetzung der Biozönose der Methanbildung unter Anwendung molekularbiologischer Methoden : Auswahl und Immobilisierung eines prozesstragenden Organismus auf einem Biosensor mit dem Ziel der Überwachung der Prozessstabilität kommerzieller Biogasanlagen
Y1  - 2013
N1  - Diss., Univ., Mathematisch-Naturwiss. Fak., Rostock, 2013
PB  - Univ.-Bibliothek
CY  - Rostock
ER  - 
TY  - JOUR
A1  - Dotzauer, Martin
A1  - Pfeiffer, Diana
A1  - Lauer, Markus
A1  - Pohl, Marcel
A1  - Mauky, Eric
A1  - Bär, Katharina
A1  - Sonnleitner, Matthias
A1  - Zörner, Wilfried
A1  - Hudde, Jessica
A1  - Schwarz, Björn
A1  - Faßauer, Burkhardt
A1  - Dahmen, Markus
A1  - Rieke, Christian
A1  - Herbert, Johannes
A1  - Thrän, Daniela
T1  - How to measure flexibility – Performance indicators for demand driven power generation from biogas plants
JF  - Renewable Energy
Y1  - 2019
U6  - https://doi.org/10.1016/j.renene.2018.10.021
SN  - 0960-1481
SP  - 135
EP  - 146
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Dielmann, Klaus-Peter
A1  - Mehlkopf, Marcus
A1  - Cudina, Boris
T1  - Erfahrungen mit der Software Risa-Gen
JF  - BWK : das Energie-Fachmagazin
Y1  - 2004
SN  - 0006-9612
SN  - 1618-193X
VL  - 56
IS  - 3
SP  - 24
EP  - 25
ER  - 
TY  - JOUR
A1  - Dielmann, Klaus-Peter
A1  - Mehlkopf, Marcus
A1  - Cudina, Boris
T1  - Der Handel mit Emissionsrechten : Vorbereitung auf den europaweiten Start 2005
JF  - VGB PowerTech : international journal for electricity and heat generation
Y1  - 2005
SN  - 1435-3199
VL  - 85
IS  - 1/2
SP  - 66
EP  - 69
ER  - 
TY  - JOUR
A1  - Dielmann, Klaus-Peter
A1  - Mehlkopf, Marcus
T1  - National zugeteilte Emissionen
JF  - BWK : das Energie-Fachmagazin
Y1  - 2005
SN  - 0006-9612
SN  - 1618-193X
VL  - 57
IS  - 5
SP  - 48
EP  - 52
ER  - 
TY  - JOUR
A1  - Dielmann, Klaus-Peter
A1  - Cudina, Boris
A1  - Mehlkopf, Marcus
T1  - Einfluss der Brennstoffdaten auf die CO2-Inventarisierung : Handel mit Emissionsrechten
JF  - Euroheat and power : Kraft-Wärme-Kopplung, Nah-/Fernwärme, Contracting
Y1  - 2003
SN  - 0949-166X
VL  - 32
IS  - 9
SP  - 22
EP  - 25
ER  - 
TY  - JOUR
A1  - Dielmann, Klaus-Peter
A1  - Bock, Alexis
A1  - Sonnek, Frederic
T1  - Stand der CO2-Allokationspläne in Europa und Durchsetzung der Monitoring-Richtlinien
JF  - VGB PowerTech : international journal for electricity and heat generation
Y1  - 2007
SN  - 1435-3199
VL  - 87
IS  - 3
SP  - 40
EP  - 46
ER  - 
TY  - JOUR
A1  - Cheenakula, Dheeraja
A1  - Griebel, Kai
A1  - Montag, David
A1  - Grömping, Markus
ED  - Huang, Xiaowu
T1  - Concept development of a mainstream deammonification and comparison with conventional process in terms of energy, performance and economical construction perspectives
JF  - Frontiers in Microbiology
N2  - Deammonification for nitrogen removal in municipal wastewater in temperate and cold climate zones is currently limited to the side stream of municipal wastewater treatment plants (MWWTP). This study developed a conceptual model of a mainstream deammonification plant, designed for 30,000 P.E., considering possible solutions corresponding to the challenging mainstream conditions in Germany. In addition, the energy-saving potential, nitrogen elimination performance and construction-related costs of mainstream deammonification were compared to a conventional plant model, having a single-stage activated sludge process with upstream denitrification. The results revealed that an additional treatment step by combining chemical precipitation and ultra-fine screening is advantageous prior the mainstream deammonification. Hereby chemical oxygen demand (COD) can be reduced by 80% so that the COD:N ratio can be reduced from 12 to 2.5. Laboratory experiments testing mainstream conditions of temperature (8–20°C), pH (6–9) and COD:N ratio (1–6) showed an achievable volumetric nitrogen removal rate (VNRR) of at least 50 gN/(m3∙d) for various deammonifying sludges from side stream deammonification systems in the state of North Rhine-Westphalia, Germany, where m3 denotes reactor volume. Assuming a retained Norganic content of 0.0035 kgNorg./(P.E.∙d) from the daily loads of N at carbon removal stage and a VNRR of 50 gN/(m3∙d) under mainstream conditions, a resident-specific reactor volume of 0.115 m3/(P.E.) is required for mainstream deammonification. This is in the same order of magnitude as the conventional activated sludge process, i.e., 0.173 m3/(P.E.) for an MWWTP of size class of 4. The conventional plant model yielded a total specific electricity demand of 35 kWh/(P.E.∙a) for the operation of the whole MWWTP and an energy recovery potential of 15.8 kWh/(P.E.∙a) through anaerobic digestion. In contrast, the developed mainstream deammonification model plant would require only a 21.5 kWh/(P.E.∙a) energy demand and result in 24 kWh/(P.E.∙a) energy recovery potential, enabling the mainstream deammonification model plant to be self-sufficient. The retrofitting costs for the implementation of mainstream deammonification in existing conventional MWWTPs are nearly negligible as the existing units like activated sludge reactors, aerators and monitoring technology are reusable. However, the mainstream deammonification must meet the performance requirement of VNRR of about 50 gN/(m3∙d) in this case.
KW  - anammox
KW  - energy efficiency
KW  - mainstream deammonification
KW  - nitrogen elimination
KW  - wastewater
Y1  - 2023
U6  - https://doi.org/10.3389/fmicb.2023.1155235
SN  - 1664-302X
VL  - 14
IS  - 11155235
SP  - 1
EP  - 15
PB  - Frontiers
ER  - 
TY  - CHAP
A1  - Bouvy, C.
A1  - Kuperjans, Isabel
T1  - Mikro-Gasturbinen : eine neue Technologie zur Kraft-Wärme-Kopplung in kleinen und mittleren Unternehmen
T2  - Entwicklungslinien der Energietechnik 2004
Y1  - 2004
N1  - Themengebiet Rationelle Energieverwendung
PB  - VDI-Verlag
CY  - Düsseldorf
ET  - CD-ROM-Ausg.
ER  - 
TY  - CHAP
A1  - Borchert, Jörg
A1  - Tenbrake, Andre
T1  - Bewirtschaftung von Flexibilität über Microservices eines Plattformanbieters
T2  - Realisierung Utility 4.0 Band 1
N2  - Die Energiewirtschaft befindet sich in einem starken Wandel, der v. a. durch die Energiewende und Digitalisierung Druck auf sämtliche Marktteilnehmer ausübt. Das klassische Geschäftsmodell des Energieversorgungsunternehmens verändert sich dabei grundlegend. Der kontinuierlich ansteigende Einsatz dezentraler und volatiler Erzeugungsanlagen macht die Identifikation von Flexibilitätspotenzialen notwendig, um weiterhin eine hohe Versorgungssicherheit zu gewährleisten. Dieser Schritt ist nur mit einem hohen Digitalisierungsgrad möglich. Eine funktionale Plattform mit Microservices, die zu Geschäftsprozessen verbunden werden können, wird als Möglichkeit zur Aktivierung der Flexibilität und Digitalisierung der Energieversorgungsunternehmen im Folgenden vorgestellt.
Y1  - 2020
SN  - 978-3-658-25332-5
U6  - https://doi.org/10.1007/978-3-658-25332-5_37
SP  - 615
EP  - 626
PB  - Springer Vieweg
CY  - Wiesbaden
ER  - 
TY  - CHAP
A1  - Borchert, Jörg
A1  - Rothe, Sebastian
ED  - Suntrop, Carsten
T1  - Energiemanagement und Versorgung von Chemieparks – Ein Ansatz zur wertschöpfungsgetriebenen Risikosteuerung
T2  - Chemiestandorte : Markt, Herausforderungen und Geschäftsmodelle
Y1  - 2016
SN  - 978-3-527-33441-4
SP  - 193
EP  - 210
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Block, Simon
A1  - Viebahn, Peter
A1  - Jungbluth, Christian
T1  - Analysing direct air capture for enabling negative emissions in Germany: an assessment of the resource requirements and costs of a potential rollout in 2045
JF  - Frontiers in Climate
N2  - Direct air capture (DAC) combined with subsequent storage (DACCS) is discussed as one promising carbon dioxide removal option. The aim of this paper is to analyse and comparatively classify the resource consumption (land use, renewable energy and water) and costs of possible DAC implementation pathways for Germany. The paths are based on a selected, existing climate neutrality scenario that requires the removal of 20 Mt of carbon dioxide (CO2) per year by DACCS from 2045. The analysis focuses on the so-called “low-temperature” DAC process, which might be more advantageous for Germany than the “high-temperature” one. In four case studies, we examine potential sites in northern, central and southern Germany, thereby using the most suitable renewable energies for electricity and heat generation. We show that the deployment of DAC results in large-scale land use and high energy needs. The land use in the range of 167–353 km2 results mainly from the area required for renewable energy generation. The total electrical energy demand of 14.4 TWh per year, of which 46% is needed to operate heat pumps to supply the heat demand of the DAC process, corresponds to around 1.4% of Germany's envisaged electricity demand in 2045. 20 Mt of water are provided yearly, corresponding to 40% of the city of Cologne‘s water demand (1.1 million inhabitants). The capture of CO2 (DAC) incurs levelised costs of 125–138 EUR per tonne of CO2, whereby the provision of the required energy via photovoltaics in southern Germany represents the lowest value of the four case studies. This does not include the costs associated with balancing its volatility. Taking into account transporting the CO2 via pipeline to the port of Wilhelmshaven, followed by transporting and sequestering the CO2 in geological storage sites in the Norwegian North Sea (DACCS), the levelised costs increase to 161–176 EUR/tCO2. Due to the longer transport distances from southern and central Germany, a northern German site using wind turbines would be the most favourable.
KW  - rollout
KW  - economics
KW  - Germany
KW  - negative emissions
KW  - carbon dioxide removal
KW  - climate neutrality
KW  - DAC
KW  - direct air capture
Y1  - 2024
U6  - https://doi.org/10.3389/fclim.2024.1353939
SN  - 2624-9553
VL  - 6
PB  - Frontiers
CY  - Lausanne
ER  - 
TY  - THES
A1  - Betsch, Matthias
T1  - Umbau einer Mikroturbine zu einer extern befeuerten Maschine mit Ankopplung an eine Stationäre-Wirbelschichtfeuerung
Y1  - 2009
U6  - http://nbn-resolving.de/urn/resolver.pl?nbn:de:gbv:28-diss2009-0166-9
N1  - Diss., Univ. Rostock, 2009
PB  - Univ. Rostock, Fakultät für Maschinenbau und Schiffstechnik
CY  - Rostock
ER  - 
TY  - CHAP
A1  - Augenstein, Eckardt
A1  - Kuperjans, Isabel
A1  - Lucas, K.
ED  - Tsatsaronis,, Georgios
T1  - EUSEBIA - Decision-Support-System for Technical, Economical and Ecological Design and Evaluation of Industrial Energy Systems
T2  - ECOS 2002 : proceedings of the 15th International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy Systems, Berlin, Germany July 3 - 5, 2002. - Vol. 1
Y1  - 2002
SN  - 3-00-009533-0
SP  - 446
EP  - 453
PB  - Techn. Univ., Inst. for Energy Engineering
CY  - Berlin
ER  -