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  - JOUR
A1  - Kuperjans, Isabel
T1  - Gute Planung ist alles : Energieeffizienz in der Pharmaproduktion
JF  - Pharma + Food
Y1  - 2011
SN  - 1434-8942
VL  - 2011
IS  - 2
SP  - 8
EP  - 10
PB  - Hüthig
CY  - Heidelberg
ER  - 
TY  - CHAP
A1  - Kuperjans, Isabel
A1  - Terpitz, J.
A1  - Terruhn, H.
A1  - Wilhelm, H.-G.
T1  - Simulation zur Konzeption und Analyse betrieblicher und kommunaler Nahwärmesysteme
T2  - Betriebliches Energiemanagement : Tagung Cottbus, 30. und 31. März 1999. - (VDI-Berichte ; 1462)
Y1  - 1999
SN  - 3-18-091462-9
SP  - 195
EP  - 204
PB  - VDI-Verl.
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Rupp, Matthias
A1  - Schulze, Sven
A1  - Kuperjans, Isabel
T1  - Comparative life cycle analysis of conventional and hybrid heavy-duty trucks
JF  - World electric vehicle journal
N2  - Heavy-duty trucks are one of the main contributors to greenhouse gas emissions in German traffic. Drivetrain electrification is an option to reduce tailpipe emissions by increasing energy conversion efficiency. To evaluate the vehicle’s environmental impacts, it is necessary to consider the entire life cycle. In addition to the daily use, it is also necessary to include the impact of production and disposal. This study presents the comparative life cycle analysis of a parallel hybrid and a conventional heavy-duty truck in long-haul operation. Assuming a uniform vehicle glider, only the differing parts of both drivetrains are taken into account to calculate the environmental burdens of the production. The use phase is modeled by a backward simulation in MATLAB/Simulink considering a characteristic driving cycle. A break-even analysis is conducted to show at what mileage the larger CO2eq emissions due to the production of the electric drivetrain are compensated. The effect of parameter variation on the break-even mileage is investigated by a sensitivity analysis. The results of this analysis show the difference in CO2eq/t km is negative, indicating that the hybrid vehicle releases 4.34 g CO2eq/t km over a lifetime fewer emissions compared to the diesel truck. The break-even analysis also emphasizes the advantages of the electrified drivetrain, compensating the larger emissions generated during production after already a distance of 15,800 km (approx. 1.5 months of operation time). The intersection coordinates, distance, and CO2eq, strongly depend on fuel, emissions for battery production and the driving profile, which lead to nearly all parameter variations showing an increase in break-even distance.
Y1  - 2018
U6  - https://doi.org/10.3390/wevj9020033
SN  - 2032-6653
VL  - 9
IS  - 2
SP  - Article No. 33
PB  - MDPI
CY  - Basel
ER  - 
TY  - CHAP
A1  - Knoche, K. F.
A1  - Kruska, Martin
A1  - Weber, P.
A1  - Kuperjans, Isabel
ED  - Schulz, Werner F.
T1  - Energiemanagement
T2  - Lexikon Nachhaltiges Wirtschaften. - (Lehr- und Handbücher zur ökologischen Unternehmensführung und Umweltökonomie)
Y1  - 2001
SN  - 3-486-24523-6
SP  - 88
EP  - 92
PB  - Oldenbourg
CY  - München [u.a.]
ER  - 
TY  - CHAP
A1  - Augenstein, Eckardt
A1  - Herbergs, S.
A1  - Kuperjans, Isabel
T1  - TOP-Energy : softwaregestützte Analyse und Optimierung industrieller Energieversorgungssysteme ; Postershow
T2  - Optimierung in der Energiewirtschaft : Tagung Stuttgart, 27. und 28. Oktober 2005. - (VDI-Berichte ; 1908)
Y1  - 2005
SN  - 3-18-091908-6
SP  - 279
EP  - 282
PB  - VDI-Verl.
CY  - Düsseldorf
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  - Pauksztat, Anja
A1  - Kuperjans, Isabel
A1  - de Hesselle, M.
T1  - Referenzformeln für Energiebedarf und CO2-Emissionen in der Glasindustrie
T2  - Energieeffizienz - Chancen für die Zukunft : Tagung Berlin, 14. und 15. November 2006. - (VDI-Berichte ; 1951)
Y1  - 2006
SN  - 3-18-091951-5
SP  - 179
EP  - 190
PB  - VDI-Verl.
CY  - Düsseldorf
ET  - Nichtred. Ms.-Dr.
ER  - 
TY  - CHAP
A1  - Kruska, Martin
A1  - Kuperjans, Isabel
T1  - Análisis Thermodinámicos : [Capítulo 3.3]
T2  - Uso racional de energía : eficiencia energética y energías renovables. - (Manual para consultores y expertos)
Y1  - 1999
SP  - 3.3-1
EP  - 3.3-15
PB  - Ministerio de Energía y Minas
CY  - Lima
ER  - 
TY  - THES
A1  - Kuperjans, Isabel
T1  - Verfahren zur Analyse und Bewertung industrieller Energieanlagen
Y1  - 2000
N1  - Aachen, Techn. Hochsch., Diss., 2000
CY  - Aachen
ER  -