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Prof. Dr. Tobias Bader

Sustainable Energy Systems
Technology Management
Business Planning

Faculty of European Campus Rottal-Inn

Professors

Professor

AA 239

0991/3615-8834

consulting time

by appointment via E-mail (latest information regarding consultation hours in I-learn)

publications

Sortierung:

Contribution

Tobias Bader
M. Finkenzeller
C. Trinkl
W. Zörner

In-Situ Measurements, Simulation and System Optimisation of a Solar-Driven DEC-System in an Industrial Environment.

In: Proceedings of the 3rd International Conference Solar Air-Conditioning. pg. 509-514

(2009)

Contribution

Tobias Bader
C. Trinkl
W. Zörner
V. Hanby

Solar-Driven Desiccant and Evaporative Cooling: Technology Overview and Operational Experiences.

In: Proceedings of the 3rd IASTED African Conference on Power and Energy Systems.

(2010)

Contribution

Tobias Bader
M. Finkenzeller
C. Trinkl
W. Zörner

Feldtest-Messungen und Systemoptimierung an einer solarbetriebenen DEC-Klimatisierungsanlage im industriellen Einsatz.

In: Tagungsband zum 20. Symposium Thermische Solarenergie.

(2010)

Contribution

S. Brandmayr
Tobias Bader
W. Zörner
V. Hanby

Simulation of Thermosyphon Systems for Solar Domestic Hot Water Production.

In: Proceedings of the 3rd IASTED African Conference on Power and Energy Systems.

(2010)

Contribution

Tobias Bader
C. Trinkl
W. Zörner
V. Hanby

In-Situ Analysis and Operational Optimisation of a Solar-Driven DEC-System.

In: Proceedings of the 2nd International Conference on Solar Heating, Cooling and Buildings Eurosun 2010.

(2010)

Contribution

Tobias Bader
C. Trinkl
W. Zörner

In-Situ-Optimierung einer solarbetriebenen Klimatisierungsanlage im industriellen Einsatz.

In: Tagungsband zur 2. Solarthermie-Technologiekonferenz.

(2010)

Contribution

Tobias Bader
C. Trinkl
W. Zörner
V. Hanby

Component Analysis of a Solar-Driven DEC-System.

In: Proceedings of the 4th International Conference Solar Air-Conditioning. pg. 329-334

(2011)

Contribution

Tobias Bader
S. Frawley
C. Trinkl
W. Zörner
V. Hanby

Desiccant air-conditioning in an industrial application: optimisation approaches for solar-thermal integration and air-handling unit.

In: Proceedings of the ISES Solar World Congress 2011.

Kassel

(2011)

Contribution

Tobias Bader
C. Trinkl
W. Zörner
V. Hanby

Betriebserfahrungen mit großen Kollektorfeldern zur solaren Klimatisierung.

In: Tagungsband zum 22. Symposium Thermische Solarenergie.

(2012)

Contribution

Tobias Bader
S. Brandmayr
C. Trinkl
W. Zoerner
V. Hanby

Global Applicability of Solar DEC-Systems: Basic Technology Effectiveness in Climatically Different Regions.

In: Proceedings of the 5th International Conference Solar Air-Conditioning. pg. 176-181

(2013)

Contribution

Tobias Bader
S. Brandmayr
W. Zörner
V. Hanby

Globale Anwendbarkeit solarer DEC-Systeme zur Klimatisierung: Untersuchung der Relevanz für klimatisch unterschiedliche Standorte.

In: Tagungsband zum 23. Symposium Thermische Solarenergie.

(2013)

Journal article

Tobias Bader
S. Brandmayr
C. Trinkl
W. Zörner
V. Hanby

Climate Specific Design and Effectiveness of Solar DEC-systems: A Methodological Zoning Approach.

In: Energy Procedia vol. 48 pg. 778-789

(2014)

DOI: 10.1016/j.egypro.2014.02.090

show abstract

The climate specific effectiveness of solar DEC-systems and relevant preferable adaptions of the system design have been so far predominantly analysed based on individual simulation for selected sites. In order to systematically deduce design-specific outline data for the application of the solar DEC-technology at climatically different sites a methodological zoning approach was further developed. A subsequent meteorological analysis for 17 sites mapping the world climate creates a transparent understanding on the activity of the specific system components. This results in a comprehension on the site-specific effectiveness of solar DEC-systems and provides insights on principally relevant and efficient system configurations.

Contribution

Tobias Bader

Solar Cooling and Air-Conditioning - Technology Overview & Global Perspectives.

In: GreenXchange, the young leadership Program of KKL-JNF.

(2015)

Contribution

Tobias Bader

The role of university & industry partnerships in the transition to a sustainable and affordable energy system in Botswana.

In: Proceedings of the Renewable Energy, Power Infrastructure & Energy Efficiency Investors conference.

(2017)

Contribution

Tobias Bader

Climate-effective solar air-conditioning strategies for selected African climates.

In: Proceedings of the Twinning Workshop on Energy-Efficient and Climate-Friendly Refrigeration and Air-Conditioning: Anglophone and Francophone Africa.

(2018)

Contribution

K. Motladiile
M. Smyth
P. Adrian
J. Mondol
Tobias Bader

Energy requirement analysis for the design of solar photovoltaic micro-grids in Botswana - A study of Jamataka village.

In: Proceedings of the 2nd RDAIS Research and Innovation Symposium.

(2019)

Contribution

A. Pugsley
R. Samikannu
M. Smyth
J. Parikh
Tobias Bader

SolaNetwork – Integrated and affordable solar energy access solutions for socioeconomically diverse rural communities in Botswana.

In: Proceedings of the 2nd RDAIS Research and Innovation Symposium.

(2019)

Contribution

J. Michael
T. Schrag
Tobias Bader

Preservation methods for herbarium specimens in Botswana.

In: Proceedings of the 2nd RDAIS Research and Innovation Symposium.

(2019)

Contribution

K. Rahube
T. Letshwenyo
B. Makatane
T. Mokoka
Tobias Bader

Analysis of energy consumption patterns in tourist lodges for improved energy efficiency – The case of Kwadiwa Lodge in Botswana.

In: Proceedings of the 2nd RDAIS Research and Innovation Symposium.

(2019)

Contribution

Tobias Bader

Status of Renewable Energy in Botswana: Framework, Trends & Potential.

In: Proceedings of the Renewable Energy Conference - Decentral Power Supply in Botswana, Southern African-German Chamber of Commerce and Industry.

(2019)

Lecture

Tobias Bader

Promoting Energy Innovation: Case Study Botswana International University of Science and Technology.

In: National Energy Stakeholder Consultation Meeting

Gaborona, Botswana

26.02.2019 (2019)

Journal article

W. Zoerner
N. Mohamed
A. Zulu
Tobias Bader
T. Chifundo
B. Cuamba
C. Hilton

Meta-Profile and Competencies for Harmonisation of Higher Education in Renewable Energy in Southern Africa.

In: Tuning Journal for Higher Education vol. 8 pg. 75-79

(2020)

Lecture

Tobias Bader

Solar Energy Technology Research, Development, and Innovation. Contribution for the Minister of Tertiary Education, Research, Science and Technology.

In: Parliament Session of the Parliament of Botswana

Botswana

11.08.2020 (2020)

Lecture

Tobias Bader

Potentiale für Solar Mini-grids in Botswana.

In: Erneuerbare Energien für ländliche Elektrifizierung und Mini-Grids in Botswana

Renewables Academy Berlin

07.09.2020 (2020)

Journal article

N. Moumakwa
M. Mokoba
Tobias Bader
E. Olakanmi

Characterization of Chemically and Thermo-chemically Treated Water Reed and Mokolwane Palm Fibers.

In: Journal of Natural Fibers pg. 1-16

(2021)

DOI: 10.1080/15440478.2021.1952141

show abstract

Water reed (Phragmites spp.) and mokolwane palm (Hyphaene spp.) natural fibers, building materials indigenous to Botswana are potential reinforcement materials in manufacturing composites due to their desirable light weight, mechanical properties, and recyclable nature. Nevertheless, the surface modification mechanism and its effects on the quality characteristics of these fibers have not been explored. This study compares the impact of chemical and thermo-chemical surface treatments on the properties of the fibers. Furthermore, a suitable treatment method and fiber to produce natural fiber-reinforced polymer composites (NFRPCs) were identified. Thermo-chemical treatment is more effective in improving the thermal resistance and mechanical properties of the fibers relative to chemical treatment. Water reed fiber treated by 1.5 wt.% NaOH solution for 15 days followed by thermal treatment at 80°C for 24 hours is best for suitable for building insulation applications considering its quality characteristics (namely: tensile strength (76.41 MPa), CI (59.2%), CS (21.44 nm) and degradation temperature range of 288–598°C). Surface modification mechanism of the fibers by chemical treatment occurred via dissolution of hemicellulose which increased the interfibrillar region while the incorporation of thermal treatment further promoted the rupture of bonds existing between the cellulose and hemicellulose.

Journal article

K. Keisang
Tobias Bader
R. Samikannu

Review of Operation and Maintenance Methodologies for Solar Photovoltaic Microgrids.

In: Frontiers in Energy Research vol. 9 pg. 1-15

(2021)

DOI: 10.3389/fenrg.2021.730230

show abstract

Global concerns and growth in electricity demand, especially for rural and remote settlements, has forced governments, scientists, engineers, and researchers to look for alternative solutions in the form of renewable energy sources. High global growth in solar energy technology applications has added more weight in operations and maintenance (O&M) of solar-photovoltaic (SPV) systems. SPV reliability and optimized system performance are key to ensuring success and continual adaptation of SPV technology. O&M plays a central role in ensuring sustainability and long-term availability throughout the operational lifetime of the elements of SPV systems whilst boosting confidence of ultimate consumers in solar energy. While appreciating that SPV installations intrinsically require minimal maintenance actions, the objective of this manuscript is hence to reaffirm the significance of O&M scheduling in SPV systems by reviewing the O&M approaches in SPV microgrid systems. Further discussions focus on the various maintenance strategies employed in the field with special emphasis on corrective, preventive, and predictive maintenance strategies. Because of the variation in the design and development procedures of SPV systems, there is lack of clear steps followed in the development of an O&M program for SPV systems and the evaluation of its performance. This manuscript serves to address this through a model for developing an O&M program and portrays the key elements for its success, including a management and execution approach for improved risk-return balance and savings from the O&M expenditure. Eventually, the three models of executing an O&M program (i.e., in-house O&M team, third party contract, or installation company) are analyzed.

Lecture

Tobias Bader
K. Giffard
G. Beau

Sustainable Energy Supply in Southern Africa and its challenges.

In: Ringvorlesung „Energie – Umwelt – Nachhaltigkeit“

Technische Hochschule Ingolstadt

21.04.2021 (2021)

Journal article

T. Seane
R. Samikannu
Tobias Bader

A review of modeling and simulation tools for microgrids based on solar photovoltaics.

In: Frontiers in Energy Research vol. 10

(2022)

DOI: 10.3389/fenrg.2022.772561

show abstract

Solar Photo Voltaic (PV) powered community microgrids are a promising sustainable solution for neighborhoods, residential quarters, and cities in sub-Saharan Africa (SSA) to meet their energy demands locally and to increase energy independence and resilience. This review provides a comprehensive study on the nature of solar PV community microgrids. Through their capacity to operate in both grid-connected and island modes, community microgrids improve utility system resiliency while also boosting energy security in local states and towns. The integration of solar PV microgrids with the electricity utility grid requires control strategies to facilitate the load sharing between distributed generation units, voltage and frequency control, as well as emergency islanding. Control strategies such as hierarchical control and droop are discussed in the review article. To identify the effectiveness of control strategies through system simulation, a review of various modeling designs of individual components in a solar PV microgrid system is discussed. The article goes on to talk about energy optimization approaches and their economic impact on microgrid systems. Finally, the review concludes with an overview of the technical challenges encountered in the integration of solar PV systems in microgrids.

Journal article

N. Linda Moumakwa
A. Sadiq Mohammed
E. Olatunde Olakanmi
Tobias Bader
A. Gessesse

Sustainable surface modification of sorghum residue-based fiber reinforced polymer composites: Properties and adhesion mechanism.

In: Cleaner Materials vol. 8 pg. 100189

(2023)

DOI: 10.1016/j.clema.2023.100189

show abstract

Sorghum stalks and other agricultural residues in excess of farmers animal feed requirements are often burnt, contributing to environmental pollution. On the other hand, such residues could serve as useful sources of fibre with different applications. The aim of this study was to investigate agricultural residue-based fibres (ARFs), using sorghum stalks as a model, for use as reinforcements in recycled low-density polyethylene (rLDPE) for the manufacture of agricultural residue-based fibre reinforced polymer composites (ARFRPCs). Thermo-alkali and thermo-laccase fibre modification treatments were employed to improve the properties of the ARFRPCs. The thermal conductivity values of the ARFRPCs at 0.23 – 0.3 W/m‧k are higher than some commercially available insulators. Moreover, thermo-alkali reinforced ARFRPCs exhibited a tensile strength of 28.57 Mpa and improved microstructure/interfacial adhesion relative to intreated and thermo-laccase treated samples. The conclusion is that thermo-alkali reinforced ARFRPCs, which was treated for 10 days, be used for non-structural applications in buildings.

Vita

Professional Career

Professor, Technische Hochschule Deggendorf (since 2021)
Lecturer Mechanical, Energy and Industrial Engineering, Botswana International University of Science and Technology
Consultant GIZ, BMWi Renewable Energy Export Initiative, Subsahara Africa
Qualitätsmanager, Continental AG, Ingolstadt
Research Associate, Institute for new Energy Systems, Ingolstadt
Innovation Manager, Dräxlmaier Group, Vilsbiburg

Studies:

PhD in Mechanical Engineering, De Montfort University Leicester, United Kingdom (Dissertation: Solar desiccant evaporative cooling with multivalent use of solar thermal heat)
Zertifikat Hochschullehre Bayern, BayZiel Didaktikzentrum, Ingolstadt
Diplom-Wirtschaftsingenieur (FH), Technische Hochschule Ingolstadt