@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{MehtaMingalevaZoerneretal.2022, author = {Mehta, Kedar and Mingaleva, Ekaterina and Z{\"o}rner, Wilfried and Degembaeva, Nadira and Baibagyshov, Ermek}, title = {Comprehensive analysis of the energy legislative framework of Kyrgyzstan}, volume = {2022}, pages = {100013}, journal = {Cleaner Energy Systems}, subtitle = {Investigation to develop a roadmap of Kyrgyz renewable energy sector}, number = {2}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2772-7831}, doi = {https://doi.org/10.1016/j.cles.2022.100013}, year = {2022}, abstract = {Kyrgyzstan - a Central Asian country - faces a high degree of energy insecurity. Especially the Kyrgyz power sector suffers from outdated infrastructure and is not capable of fulfilling the growing and fluctuating inter-seasonal energy demand. On the contrary, the country is endowed with an abundant amount of renewable energies, which can significantly contribute to bringing stability to the energy sector. The current energy policy is considered as one of the key barriers to the developing the renewable energy sector in Kyrgyzstan. Hence, there is an immediate need to evaluate the formulated energy policy to investigate gaps and uncertainties. In response to that, the presented study is the first attempt that provides an in-depth assessment of Kyrgyzstan's current energy legislative framework. It determines the primary mechanisms for the operation and conduction of renewable energy sources in terms of legal and economic aspects. Furthermore, it provides detailed insight into the current Feed-in tariff calculation methodology and scrutinizes the special provisions for private investors. Based on the in-depth assessment, the article recapitulates the shortfall in the existing energy policies. The article found that there is huge potential available for the renewable energy market. To unlock that, the presented article emahsised on synergestic policy making approach to overcome barriers and expand the Kyrgyz renewable energy sector. The article further showcased how the improvements in the regulatory framework would raise the interest of the private investors / local energy players to promote the installation of renewable energy technologies over the county.}, language = {en} } @article{MehtaEhrenwirthTrinkletal.2022, author = {Mehta, Kedar and Ehrenwirth, Mathias and Trinkl, Christoph and Z{\"o}rner, Wilfried}, title = {Mapping Potential for Improving Rural Energy Services in Kyrgyzstan: Factors for Achieving Sustainable Development Goals in the Community Context}, volume = {3}, journal = {World}, number = {3}, publisher = {MDPI}, address = {Basel}, issn = {2673-4060}, doi = {https://doi.org/10.3390/world3030032}, pages = {586 -- 606}, year = {2022}, abstract = {Energy is a pivotal element for overall development. Therefore, affordable and clean energy for all (Sustainable Development Goal 7) is one of the important elements. Despite a suitable approach, Kyrgyzstan lags behind to achieve its Sustainable Development Goals by 2030. Improving access to energy can significantly impact the progress of many other sustainable development targets. However, access to reliable, sustainable, and adequate energy is a crucial task in rural Kyrgyzstan. Taking into consideration the energy situation and the importance of the availability of energy services, the overarching aim of the presented article is to map the potential of improving rural energy services to foster overall sustainable development goals. The article presents the most relevant information about rural energy usage behaviour based on three primary pillars: energy demand, energy carrier, and energy sources. In addition, the presented research article synthesises the key driving factors which have a direct or indirect impact on the energy services in rural areas. The summarised data displays a deep insight into a variety of complex and dynamic household energy consumption patterns. The article provides a potential solution nexus to foster improved energy services in rural Kyrgyzstan and therefore to foster the overall sustainable development in Kyrgyzstan. The findings of the article help to formulate a strategy to design rural energy services for policy makers and stockholders.}, language = {en} } @article{MehtaZoernerGreenough2022, author = {Mehta, Kedar and Z{\"o}rner, Wilfried and Greenough, Richard}, title = {Residential Building Construction Techniques and the Potential for Energy Efficiency in Central Asia: Example from High-Altitude Rural Settlement in Kyrgyzstan}, volume = {15}, pages = {8869}, journal = {Energies}, number = {23}, publisher = {MDPI}, address = {Basel}, issn = {1996-1073}, doi = {https://doi.org/10.3390/en15238869}, year = {2022}, abstract = {Building construction in rural Kyrgyzstan is heavily dominated by earthen buildings. Old and inappropriate residential building structures contribute significantly to high domestic space heating energy consumption. Therefore, it is necessary to understand the relevant building construction techniques. However, the scant information on Kyrgyz building techniques, especially for high-altitude rural settlements, was the prime motivation to perform the presented study. The key objective of the study is to investigate residential building construction techniques in high-altitude rural Kyrgyzstan, and this was to be achieved by house visits during field trips, literature review, and pilot interviews with local people. The analysis enabled the detailed identification of individual building envelopes as well as predominant building materials to be recorded. Based on the assessment, a housing profile was created that represents the typical characteristics of traditional rural Kyrgyz houses. Furthermore, the study demonstrates the potential for energy savings in rural Kyrgyz houses of 50-70\%. However, local conditions prevent people from making improvements to all domestic energy efficiency parameters simultaneously. Therefore, the study developed a 'sequential roadmap' to reduce domestic space heating demand in different phases based on simulation studies. Existing low-income rural Kyrgyz habitations can use the presented roadmap to reduce domestic space heating demand sequentially to overcome financial barriers and, therefore, contribute to establishing sustainable buildings in Kyrgyzstan. These results may be partially replicated in other Central Asian rural communities depending on their location and building characteristics.}, language = {en} } @article{StarkTrinklZoerneretal.2018, author = {Stark, Matthias and Trinkl, Christoph and Z{\"o}rner, Wilfried and Greenough, Richard}, title = {Methodological Evaluation of Storage Systems for Flexible Power Generation from Solid Biomass}, volume = {41}, journal = {Chemical Engineering \& Technology}, number = {11}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1521-4125}, doi = {https://doi.org/10.1002/ceat.201800099}, pages = {2168 -- 2176}, year = {2018}, language = {en} } @article{BaderBrandmayrTrinkletal.2014, author = {Bader, Tobias and Brandmayr, Sebastian and Trinkl, Christoph and Z{\"o}rner, Wilfried and Hanby, Victor Ian}, title = {Climate Specific Design and Effectiveness of Solar DEC-systems}, volume = {2014}, journal = {Energy Procedia}, subtitle = {a Methodological Zoning Approach}, number = {48}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1876-6102}, doi = {https://doi.org/10.1016/j.egypro.2014.02.090}, pages = {778 -- 789}, year = {2014}, 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.}, language = {en} } @article{ReiterBrandmayrTrinkletal.2014, author = {Reiter, Christoph and Brandmayr, Sebastian and Trinkl, Christoph and Z{\"o}rner, Wilfried and Hanby, Victor Ian}, title = {Performance Optimisation of Polymeric Collectors by Means of Dynamic Simulation and Sensitivity Analysis}, volume = {2014}, journal = {Energy Procedia}, number = {48}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1876-6102}, doi = {https://doi.org/10.1016/j.egypro.2014.02.023}, pages = {181 -- 191}, year = {2014}, abstract = {A dynamic flat-plate collector model for parametric sensitivity studies on polymer-based collector designs was developed. Validation using experimental results of conventional flat-plate collectors showed satisfying results especially regarding the calculation of individual part temperatures of a collector. The model was used to predict system efficiency as well as individual part temperatures in order to analyse a polymeric collector approach in comparison to a conventional collector. The simulation results showed that the fractional energy savings of systems with conventional flat-plate collectors cannot be reached with the analysed polymeric collector approach. Also the stagnation temperatures of more efficient approaches are too high for low-cost polymeric materials. The exemplary analysis of annual temperature loads of the backside insulation for different approaches proved the necessity of careful collector design aiming at temperature reduction for all individual collector parts.}, language = {en} } @article{TrinklZoernerHanby2009, author = {Trinkl, Christoph and Z{\"o}rner, Wilfried and Hanby, Victor Ian}, title = {Simulation study on a domestic solar/heat pump heating system incorporating latent and stratified thermal storage}, volume = {131}, pages = {041008}, journal = {Journal of Solar Energy Engineering}, number = {4}, publisher = {ASME}, address = {New York}, issn = {1528-8986}, doi = {https://doi.org/10.1115/1.3197845}, year = {2009}, language = {en} } @article{RiessBrandmayrZoerneretal.2014, author = {Riess, Hermann and Brandmayr, Sebastian and Z{\"o}rner, Wilfried and Greenough, Richard}, title = {Analysis of the mechanical behaviour of an all-round fully adhesive supported absorber}, volume = {2014}, journal = {Energy Procedia}, number = {48}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1876-6102}, doi = {https://doi.org/10.1016/j.egypro.2014.02.025}, pages = {201 -- 211}, year = {2014}, abstract = {This paper discusses the mechanical behaviour of an all-round fully adhesive supported absorber. Previous research is discussed and compared to the author's own results collected using both laboratory tests and simulation. The influence of the finite-element approach (i.e. geometrically linear or non-linear) was compared. The thermal deformation of a hyperstatic absorber was investigated. The relationship between thermal expansion and pressure change in a gas-filled collector is discussed.}, language = {en} } @article{MuellerBrandmayrZoerner2014, author = {M{\"u}ller, Holger and Brandmayr, Sebastian and Z{\"o}rner, Wilfried}, title = {Development of an evaluation methodology for the potential of solar-thermal energy use in the food industry}, volume = {214}, journal = {Energy Procedia}, number = {48}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1876-6102}, doi = {https://doi.org/10.1016/j.egypro.2014.02.135}, pages = {1194 -- 1201}, year = {2014}, abstract = {The research project 'Solar Heat in the Liquid Food Industry' (part of the FORETA Research Network) focused on the development and optimisation of low-temperature heating systems for the liquid food industry. Its main objectives are in energy efficiency, waste heat recovery and the feasibility of a solar-thermal process heating system. Based on the particular simulation results the overall solar-thermal potentials for German breweries and dairies were determined. In this connection a literature review indicated that most of the potential studies on solar-thermal energy use in the industry or related to specific industrial sectors are based on the total use of low-temperature heat. In opposition to these results, the available and mainly limited roof area was found to be a more important aspect for the solar-thermal potential. Hence, the development of a methodology for a site- specific analysis was necessary. The interconnection of only a few defined evaluation criteria resulted in a more realistic estimation of the potential for a solar-thermal heat supply.}, language = {en} }