TY - CHAP A1 - Neef, Matthias A1 - Zielke, Thomas A1 - Fussenecker, Claudia ED - Danish Network for Engineering Education, T1 - Engineering Conferences - An Innovative Course for Master Students in Engineering T2 - Exploring Teaching for Active Learning in Engineering Education N2 - This poster summarizes a few facts, figures and resources related to the Master course ”Engineering Conferences”. KW - Poster Y1 - 2017 SN - 978-87-998898-1-5 PB - Danish Network for Engineering Education (IUPN) CY - Odense ER - TY - CHAP A1 - Frank, Lena A1 - Rödder, Maximilian A1 - Neef, Matthias A1 - Adam, Mario T1 - Heizung, Lüftung, Weiße Ware – ein integriertes Systemkonzept für das Haus der Zukunft T2 - Deutsche Kälte- und Klimatagung 2017 Bremen KW - Heizung KW - EnerTEG Y1 - 2017 SN - 9783932715938 SP - 1028 EP - 1041 CY - Stuttgart ER - TY - CHAP A1 - Feseker, Daniel A1 - Kinell, Mats A1 - Neef, Matthias ED - The American Society of Mechanical Engineers, T1 - Experimental Study on Pressure Losses in Circular Orifices With Inlet Cross Flow T2 - Proceedings of the ASME Turbo Expo: Turbine Technical Conference and Exposition - 2017: presented at the ASME Turbo Expo 2017: Turbine Technical Conference and Exposition, June 26-30, 2017 N2 - The ability to understand and predict the pressure losses of orifices is important in order to improve the air flow within the secondary air system. This experimental study investigates the behavior of the discharge coefficient for circular orifices with inlet cross flow which is a common flow case in gas turbines. Examples of this are at the inlet of a film cooling hole or the feeding of air to a blade through an orifice in a rotor disk. Measurements were conducted for a total number of 38 orifices, covering a wide range of length-to-diameter ratios, including short and long orifices with varying inlet geometries. Up to five different chamfer-to-diameter and radius-to-diameter ratios were tested per orifice length. Furthermore, the static pressure ratio across the orifice was varied between 1.05 and 1.6 for all examined orifices. The results of this comprehensive investigation demonstrate the beneficial influence of rounded inlet geometries and the ability to decrease pressure losses, which is especially true for higher cross flow ratios where the reduction of the pressure loss in comparison to sharp-edged holes can be as high as 54%. With some exceptions, the chamfered orifices show a similar behavior as the rounded ones but with generally lower discharge coefficients. Nevertheless, a chamfered inlet yields lower pressure losses than a sharp-edged inlet. The obtained experimental data were used to develop two correlations for the discharge coefficient as a function of geometrical as well as flow properties. Y1 - 2017 UR - https://asmedigitalcollection.asme.org/GT/proceedings/GT2017/50886/Charlotte, North Carolina, USA/241903 SN - 978-0-7918-5088-6 U6 - https://doi.org/10.1115/GT2017-64143 PB - The American Society of Mechanical Engineers CY - New York ER - TY - JOUR A1 - Neef, Matthias A1 - Zielke, Thomas A1 - Fussenecker, Claudia T1 - „Engineering Conferences“: Wissenschaftlich Kommunizieren im Master JF - Die Neue Hochschule Y1 - 2017 VL - 58 IS - 3 ER - TY - JOUR A1 - Bonk, Christian Dirk A1 - Laux, Christoph A1 - Rödder, Maximilian A1 - Neef, Matthias T1 - Design of a 1 KW Organic Rankine Cycle for Teaching and Research Issues JF - Energy Procedia N2 - This paper deals with the design of a micro-scale ORC plant for teaching and research including the development of an automated control concept. The aim is to provide a safe and environmentally acceptable micro-scale heat engine, which can be developed, implemented and used in university labs for the education of students as well as for small research projects. The test rig allows the support of several learning outcomes on a multi-disciplinary level particularly for the implementation and simulation of small power systems. Special attention was given to the organic working fluid characteristics and its selection process. In addition to the above-mentioned performance goals, favourable safety properties and low global warming potential were decisive in the selection of the novel organic fluid called 3M™ Novec™ 649. The performance and the fluid behaviour of Novec 649 in a micro-scale power cycle are of major interest and the research goal for the test rig presented in this paper. Due to the expected power output of 1 kW, a scroll expander was chosen as the generator drive for the micro plant. In order to design the major parts of the ORC, the thermodynamic simulation software EBSILON®Professional was used. The supply temperature was set to 140 °C. As a result of the simulation, feasible expander inlet pressures spread from 5.5 bar to 8.5 bar. This leads to thermal efficiencies of the ORC in the order of 5 %. Adding a recuperator to the cycle system decreases the operating pressure range but in the end, the thermal efficiency can be increased by 1.5 %-points up to 6.2 %. Finally, an automated control concept is introduced, where the pump is controlled via the fill level measurement system. KW - EBSILON®Professional KW - Micro-Scale ORC Plant KW - Teaching KW - Research KW - Automated Control Concept Y1 - 2017 U6 - https://doi.org/10.1016/j.egypro.2017.09.117 VL - 129 SP - 931 EP - 938 PB - Elsevier ER - TY - CHAP A1 - Scognamiglio, Alessandra A1 - Musall, Eike ED - Gardes, François ED - Ayoub, Josef ED - Aelenei, Daniel ED - Aelenei, Laura ED - Scognamiglio, Alessandra T1 - Net ZEB design opportunities and challenges T2 - Solution sets for net zero energy buildings KW - Energiebewusstes Bauen KW - Energieeffizienz KW - Nachhaltigkeit KW - Niedrigenergiehaus KW - Nullenergiehaus KW - Passivhaus Y1 - 2017 SN - 9783433604663 U6 - https://doi.org/10.1002/9783433604663.ch4 SP - 103 EP - 152 PB - Ernst & Sohn CY - Berlin ER - TY - CHAP A1 - Aelenei, Laura A1 - Musall, Eike ED - Gardes, François ED - Ayoub, Josef ED - Aelenei, Daniel ED - Aelenei, Laura ED - Scognamiglio, Alessandra T1 - Net ZEB case study buildings, measures and solution sets T2 - Solution sets for net zero energy buildings KW - Energiebewusstes Bauen KW - Nullenergiehaus KW - Energieeffizienz KW - Nachhaltigkeit KW - Niedrigenergiehaus KW - Passivhaus Y1 - 2017 SN - 9783433604663 U6 - https://doi.org/10.1002/9783433604663.ch3 SP - 39 EP - 102 PB - Ernst & Sohn CY - Berlin ER - TY - CHAP A1 - Aelenei, Laura A1 - Musall, Eike ED - Gardes, François ED - Ayoub, Josef ED - Aelenei, Daniel ED - Aelenei, Laura ED - Scognamiglio, Alessandra T1 - Net zero energy building design fundamentals T2 - Solution sets for net zero energy buildings KW - Energiebewusstes Bauen KW - Nullenergiehaus KW - Passivhaus KW - Nachhaltigkeit KW - Energieeffizienz KW - Niedrigenergiehaus Y1 - 2017 SN - 9783433604663 U6 - https://doi.org/10.1002/9783433604663.ch2 SP - 7 EP - 38 PB - Ernst & Sohn CY - Berlin ER - TY - CHAP A1 - Weinert, Stephan A1 - Stulle, Klaus P. ED - von Au, Corinna T1 - Management Audit für die Auswahl der Führungspersönlichkeiten T2 - Anreizsysteme für Leadership-Organisationen KW - Anreizsystem Y1 - 2017 UR - https://link.springer.com/book/10.1007/978-3-658-17991-5 SN - 978-3-658-17991-5 SP - 145 EP - 156 PB - Springer Fachmedien CY - Wiesbaden ER - TY - CHAP A1 - Weinert, Stephan A1 - Schumann, Felix A1 - Reit, Karl-Heinz ED - von Au, Corinna T1 - Anforderungen an ein modernes Performance-Management-System T2 - Anreizsysteme für Leadership-Organisationen KW - Anreizsystem Y1 - 2017 UR - https://link.springer.com/book/10.1007%2F978-3-658-17991-5 SN - 978-3-658-17991-5 SP - 115 EP - 132 PB - Springer Fachmedien CY - Wiesbaden ER -