Publikationen

2022

• Generic and Open-Source Exergy Analysis - Extending the Simulation Framework TESPy

  Witte, F. ., Hofmann, M. ., Meier, J. ., Tuschy, I. ., & Tsatsaronis, G. . (2022). Generic and Open-Source Exergy Analysis - Extending the Simulation Framework TESPy. Energies, 15. http://doi.org/10.3390/en15114087

  Abstract

  anzeigen ▸

  Exergy-based methods support the identification of thermodynamic inefficiencies and the discovery of optimization potentials in thermal engineering applications. Although a large variety of simulation software is available in this field, most do not offer an integrated solution for exergy analysis. While there are commercial products on the market with such capabilities, their access for research and educational purposes is limited. The presented open-source software offers an integrated and fully automated exergy analysis tool for thermal conversion processes. In a first step, physical exergy is implemented, and the tool is then applied to three different example plants to highlight its capabilities and validate the implementation: A solar thermal power plant, a supercritical CO2 power cycle, and an air refrigeration cycle. The respective models and the results of the analyses are presented briefly. By providing the results in modern data structures, they are easily accessible and postprocessible. Future work will include chemical exergy to enable analyses of applications with conversion of matter. Additionally, the implementation of the exergoeconomic analysis and optimization is envisaged.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Witte, Francesco
    • Tuschy, Ilja

  • Profilbereich

    • Erneuerbare Energien und nachhaltige Entwicklung

  • Forschungsfeld

    • Wärme

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Journal Article
  • • Francesco Witte
    • Mathias Hofmann
    • Julius Meier
    • Ilja Tuschy
    • George Tsatsaronis

• Finanzierungs- & Förderangebote für Ecopreneure

  Neumann, T. ., Widrat, A. ., & Fichter, K. . (2022). Finanzierungs- & Förderangebote für Ecopreneure. Gründerplattform. Abgerufen von https://cdn.kettufy.io/gp.kettufy.io/documents/gruenderplattform.de/Material-3_Broschuere-FinanzierungFoerderungangebote.pdf

  • Suche auf Google Scholar

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Forschungsprojekt

    • EU-REACT StartUp SH

  • Abteilung/Einrichtung

    • Jackstädt-Zentrum Flensburg (JZF)

  • Profilbereich

    • Start-up- und KMU-Management

  • Forschungsfeld

    • Entrepreneurship

  • Fachbereich

    • Fachbereich 4: Wirtschaft

  Filter Tags

  • 2022
  • Journal Article
  • • Thomas Neumann
    • Alexandra Widrat
    • Klaus Fichter

• Entwicklungsperspektiven für die deutsch-dänische Grenzregion

  Bille, H. ., Kreuzhof, R. ., Laaser, C.-F. ., & Schrader, K. . (2022). Entwicklungsperspektiven für die deutsch-dänische Grenzregion (No. 43). Kiel: Kiel Institut f ur Weltwirtschaft - Leibniz-Zentrum zur Erforschung globaler okonomischer Herausforderungen (IfW Kiel). Abgerufen von http://hdl.handle.net/10419/267213

  Abstract

  anzeigen ▸

  Im Rahmen der Studie werden wirtschaftliche St arken und Schw achen beidseits der deutsch-d anischen Grenze sowie Handlungsfelder f ur eine vertiefte Kooperation in der Grenzregion identifiziert. Es wird analysiert, welche "kritischen Massen" in der Grenzregion mobilisiert werden k onnten, um auf beiden Seiten der Grenze Schw achen zu uberwinden und die Gesamtregion im Wettbewerb um Investoren und knappe Arbeitskr afte zu st arken. Auf Grundlage einer Expertenbefragung werden Schl usselfaktoren f ur die Entwicklung der Grenzregion abgeleitet und m ogliche Entwicklungsszenarien f ur die deutsch-d anische Grenzregion modelliert. Das Autorenteam zeigt dar uber hinaus, dass die Erfahrungen und Kooperationsmodelle bereits st arker integrierten Grenzregionen Lerneffekte f ur die Institutionalisierung der Zusammenarbeit und insbesondere f ur die Ausgestaltung von Arbeitsmarktkooperationen bieten. — — The study identifies economic strengths and weaknesses on both sides of the German-Danish border as well as fields of action for deeper cooperation in the border region. It analyzes which "critical masses" could be mobilized in the border region to overcome weaknesses on both sides of the border and to strengthen the overall region in the competition for investors and scarce labor. Based on an expert survey, key factors for the development of the border region are derived and possible development scenarios for the German-Danish border region are modeled. The team of authors also shows that the experiences and cooperation models of already more integrated border regions offer learning effects for the institutionalization of cooperation and especially for the design of labor market cooperation.

  • Suche auf Google Scholar

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Abteilung/Einrichtung

    • Jackstädt-Zentrum Flensburg (JZF)

  • Profilbereich

    • Start-up- und KMU-Management

  • Forschungsfeld

    • Fachkräfte und Vernetzung

  • Fachbereich

    • Fachbereich 4: Wirtschaft

  Filter Tags

  • 2022
  • Report
  • • Heike Bille
    • Rainer Kreuzhof
    • Claus-Friedrich Laaser
    • Klaus Schrader
  • • 330
    • Regionalpolitik
    • Deutschland
    • Schleswig-Holstein
    • D anemark
    • Verarbeitendes Gewerbe
    • Wirtschaftsintegration
    • Grenzregion
    • Regional policy
    • Germany
    • Denmark
    • manufacturing industry
    • economic integration
    • border region

• Parametric optimization and comparative study of an organic Rankine cycle power plant for two-phase geothermal sources

  Chen, C. ., Witte, F. ., Tuschy, I. ., Kolditz, O. ., & Shao, H. . (2022). Parametric optimization and comparative study of an organic Rankine cycle power plant for two-phase geothermal sources. Energy, 123910. http://doi.org/https://doi.org/10.1016/j.energy.2022.123910

  Abstract

  anzeigen ▸

  For two-phase geothermal sources, Organic Rankine Cycle (ORC) based binary plant is often applied for power production. In this work, a network topology is designed with the open-source Thermal Engineering Systems in Python (TESPy) software to simulate the stationary operation of the ORC plant. With this topology, the performance of six different working fluids are compared. From the thermodynamic perspective, the gross and net power output are optimized respectively. Results show that R600 has the highest gross power output of 17.55 MW, while R245fa has the highest net power output of 12.93 MW. However, the turbine inlet temperatures for these two working fluids need to be designed at the upper theoretical limit. R245ca and R601a require the heat exchange rates of internal heat exchanger to be larger than 1.51 MW and 0.99 MW to satisfy the re-injection temperature limit, which are smaller than the R600 (6.7 MW) and R245fa (6.0 MW) cases. Besides, the working fluid with lower critical state is preferred for a geothermal source with smaller steam fraction to establish a stable ORC plant. The workflow for the ORC design and optimization in this work is generic, and can be further applied to thermo-economic investigation.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Witte, Francesco
    • Tuschy, Ilja

  • Profilbereich

    • Erneuerbare Energien und nachhaltige Entwicklung

  • Forschungsfeld

    • Wärme

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Journal Article
  • • Chaofan Chen
    • Francesco Witte
    • Ilja Tuschy
    • Olaf Kolditz
    • Haibing Shao
  • • Organic Rankine cycle (ORC)
    • Geothermal power plant
    • Two-phase geothermal sources
    • Design and optimization
    • Thermal engineering systems in python (TESPy)
    • OpenGeoSys (OGS)

• LSP Teacher Training Summer School . The TRAILs project

  Chateaureynaud, M.-A. ., & John, P. . (Hrsg.). (2022). LSP Teacher Training Summer School . The TRAILs project. Champs Didactiques Plurilingues : données pour des politiques stratégiques (Bd. 13, S. 280). Brüssel (Belgien): Peter Lang. http://doi.org/10.3726/b20096

  Abstract

  anzeigen ▸

  This book is the result of research carried out in partnership with seven European universities as part of an Erasmus+ project on training teachers of Language for Specifi c Purpose (LSP) in higher education. All university partners, i.e. Bordeaux (France), Zagreb (Croatia), Jade (Germany), Cádiz (Spain), Adam Mickiewicz (Poland), Ljubljana (Slovenia), Arcola Research (UK), and Bergamo (Italy) carried out surveys and developed a detailed report showing that in Europe there is very little training for this type of teaching, and that teachers generally need to be trained in the specifi cities of the language fi eld they are going to teach. Medical or maritime English, legal Spanish, French for tourism, etc. require both an expert domain knowledge and a grounding in language teaching. Several testimonies highlight this situation and show the lack of career development prospects for LSP teachers at European universities. The members of the Erasmus+ TRAILs project have therefore been interested in the specifi c needs of LSP teachers and have been able to update the information through several types of surveys. The competences of LSP teachers were thus identifi ed. Based on this precise inventory, they are proposing to draw up a complete training programme. A pedagogical approach has been developed: resources, lesson preparation, course design, innovative pedagogical approaches are presented. The research presented in this book goes well beyond the TRAILs project and questions the training of specialised language teachers. More generally, it highlights the need to provide effective training and professional development for LSP teachers and offers a contribution to overcoming the shortcomings of LSP teacher education.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Abteilung/Einrichtung

    • CIVU – Center for Interaction, Visualization and Usability

  • Profilbereich

    • Informatik und Gestaltung

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

  Filter Tags

  • 2022
  • Book
  • • Marie-Anne Chateaureynaud
    • Peter John

• Evaluation einer Prostatakrebsnachsorge-App aus Patientensicht: Eine qualitative Studie

  Pornak, S. C., Griemsmann, S. ., Böhle, A. ., Lusch, A. ., Schulte, R. ., & Lehr, B. . (2022). Evaluation einer Prostatakrebsnachsorge-App aus Patientensicht: Eine qualitative Studie. Zeitschrift für Evidenz, Fortbildung Und Qualität Im Gesundheitswesen, 175, 67–75.

  • Suche auf Google Scholar

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Pornak, Shirin Caroline

  Filter Tags

  • 2022
  • Journal Article
  • • Shirin Pornak
    • Silke Griemsmann
    • Andreas Böhle
    • Achim Lusch
    • Rainer Schulte
    • Bosco Lehr

• A symbolic framework to obtain mid-fidelity models of flexible multibody systems with application to horizontal-axis wind turbines

  Branlard, E. ., & Geisler, J. . (2022). A symbolic framework to obtain mid-fidelity models of flexible multibody systems with application to horizontal-axis wind turbines. Wind Energy Science, 7, 2351–2371. http://doi.org/10.5194/wes-7-2351-2022

  Abstract

  anzeigen ▸

  The article presents a symbolic framework (also called computer algebra program) that is used to obtain, in symbolic mathematical form, the linear and nonlinear equations of motion of a mid-fidelity multibody system including rigid and flexible bodies. Our approach is based on Kane's method and a nonlinear shape function representation for flexible bodies. The shape function approach does not represent the state of the art for flexible multibody dynamics but is an effective trade-off to obtain mid-fidelity models with few degrees of freedom, taking advantage of the separation of space and time. The method yields compact symbolic equations of motion with implicit account of the constraints. The general and automatic framework facilitates the creation and manipulation of models with various levels of complexity by adding or removing degrees of freedom. The symbolic treatment allows for analytical gradients and linearized equations of motion. The linear and nonlinear equations can be exported to Python code or dedicated software. There are multiple applications, such as time domain simulation, stability analyses, frequency domain analyses, advanced controller design, state observers, and digital twins. In this article, we describe the method we used to systematically generate the equations of motion of multibody systems and present the implementation of the framework using the Python package SymPy. We apply the framework to generate illustrative land-based and offshore wind turbine models. We compare our results with OpenFAST simulations and discuss the advantages and limitations of the method. The Python implementation is provided as an open-source project.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Geisler, Jens

  • Profilbereich

    • Erneuerbare Energien und nachhaltige Entwicklung

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Journal Article
  • • E. Branlard
    • Jens Geisler

• Service Learning as an Approach to Teaching Small Business Management

  Behrends, T. ., & Binder, L. . (2022). Service Learning as an Approach to Teaching Small Business Management. In International Case Studies in Service Learning (Bd. 47, S. 99–115). Emerald Publishing Limited. http://doi.org/10.1108/S2055-364120220000047007

  Abstract

  anzeigen ▸

  Small- and medium-sized enterprises (SMEs) are a central backbone of (most) national economies. Research shows, that due to their smaller size, SMEs not only have comparatively less formalized, less complex, and less specialized organizational structures, but a somewhat different social character as well. It is in particular the interplay of these structural and cultural peculiarities of SMEs that is difficult to impart perceptibly in regular university courses on Small Business Management. From a managerial science perspective, the structural as well as social characteristics of small non-profit organizations are quite similar to the above-mentioned features of SMEs. Both types of organizations usually function in a less bureaucratic and more personal way, while also being a bit more chaotic sometimes. In addition, both are often facing the challenges of severe resource scarcity as well as a lack of management competencies. In view of these fundamental similarities between SMEs and small non-profit organizations, the practical seminar Service Learning Project was designed to provide management students at Europa-Universität Flensburg with the opportunity of experiencing typical small business work realities. Here, student teams support local non-profit organizations in meeting typical management challenges ranging from the conception and implementation of fundraising or image campaigns to internal consultancy projects. In this way, the seminar offers the possibility to deal with real-world practical management issues while concurrently strengthening students’ civic societal awareness, fostering empathy, and overcoming the oftentimes overly pronounced distance between science and life-world practice.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Abteilung/Einrichtung

    • Jackstädt-Zentrum Flensburg (JZF)

  • Profilbereich

    • Start-up- und KMU-Management

  • Forschungsfeld

    • Fachkräfte und Vernetzung

  • Fachbereich

    • Fachbereich 4: Wirtschaft

  Filter Tags

  • 2022
  • Book Chapter
  • • Thomas Behrends
    • Larissa Binder

• Quick Start - Programmieren lernen C#

  Cordts, S. ., & Nasutta, M. . (2022). Quick Start - Programmieren lernen C#. mana-Buch Verlag.

  • Suche auf Google Scholar

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Fachbereich

    • Fachbereich 4: Wirtschaft

  Filter Tags

  • 2022
  • Book
  • • Sönke Cordts
    • Maren Nasutta

• Good Tech and Social Good: Value Creation by Korean Social and High-Tech Oriented Start-Ups

  Berg, S.-H. ., & Mitra, J. . (2022). Good Tech and Social Good: Value Creation by Korean Social and High-Tech Oriented Start-Ups. Volume 8 Issue 1, 8(1), 29–45. Abgerufen von https://EconPapers.repec.org/RePEc:sae:jouent:v:8:y:2022:i:1:p:29-45

  Abstract

  anzeigen ▸

  Through an exploration of Korean high-tech social enterprises, we aim to identify and explore critically (a) how socially engaged, early stage, high technology firms combine social and economic objectives with which to scale up their ventures; and (b) how socially engaged firms seek entrepreneurial opportunity development, including the internationalisation process and the support of stake holding institutions to help scale up the value creation process. We highlight ‘people’, ‘organisations’ and the ‘environment’ dimensions, enabling an understanding of the drivers of socially entrepreneurial activity both from individual and societal perspectives. The analytical framework of our study is based on empirical data acquired from individual in-depth interviews, group interviews, active participatory observations and survey data from 2018 to 2021. We found that social motivation and objectives of the entrepreneurs are equally strong drivers and that they are the principal factors for the scaling up process. The motivation is strengthened by the proactive role of government initiatives which also attract other key stakeholders in the growth process. A combination of digital technology with a high degree of social motivation of the entrepreneurs tends to lead to the development of international market opportunities and attract the interests of international foundations.

  • Suche auf Google Scholar

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Abteilung/Einrichtung

    • Jackstädt-Zentrum Flensburg (JZF)

  • Profilbereich

    • Start-up- und KMU-Management

  • Forschungsfeld

    • Entrepreneurship

  • Fachbereich

    • Fachbereich 4: Wirtschaft

  Filter Tags

  • 2022
  • Journal Article
  • • Su-Hyun Berg
    • Jay Mitra
  • • Social and technological entrepreneurship
    • high-tech start-ups
    • digital technology
    • South Korea
    • internationalisation