@article{HerzogJaenchen2016, author = {Herzog, Thomas H. and J{\"a}nchen, Jochen}, title = {Adsorption Properties of Modified Zeolites for Operating Range Enhancement of Adsorption Heat Pumps through the Use of Organic Adsorptive Agents}, series = {Energy Procedia}, volume = {91}, journal = {Energy Procedia}, issn = {1876-6102}, doi = {10.1016/j.egypro.2016.06.192}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-6614}, pages = {155 -- 160}, year = {2016}, abstract = {Faujasite zeolites with the highest possible Al-content and different cations as well as a dealuminated zeolite Y have been chosen to study the impact on the adsorption behavior in view of differed adsorptive agents for heat pumps or thermochemical storages. Our results show advantages and disadvantages for water, methanol or ethanol adsorption due to the structure of the anion skeleton, kind of cations and size of the adsorbat molecule.}, language = {en} } @article{RistićFurboMoseretal.2016, author = {Ristić, Alenka and Furbo, Simon and Moser, Christoph and Schranzhofer, Hermann and Lazaro, Ana and Delgado, Monica and Pe{\~n}alosa, Conchita and Zalewski, Laurent and Diarce, Gonzalo and Alkan, Cemil and Gunasekara, Saman N. and Haussmann, Thomas and Gschwander, Stefan and Rathgeber, Christoph and Schmit, Henri and Barreneche, Camila and Cabeza, Luiza and Ferrer, Gerard and Konuklu, Yeliz and Paksoy, Halime and Rammelberg, Holger and Munz, Gunther and Herzog, Thomas H. and J{\"a}nchen, Jochen and del Barrio, Elena Palomo}, title = {IEA SHC Task 42 / ECES Annex 29 WG A1: Engineering and Processing of PCMs, TCMs and Sorption Materials}, series = {Energy Procedia}, volume = {91}, journal = {Energy Procedia}, issn = {1876-6102}, doi = {10.1016/j.egypro.2016.06.205}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-6629}, pages = {207 -- 217}, year = {2016}, abstract = {An overview on the recent results on the engineering and characterization of sorption materials, PCMs and TCMs investigated in the working group WG A1 "Engineering and processing of TES materials" of IEA SHC Task 42 / ECES Annex 29 (Task 4229) entitled "Compact Thermal Energy Storage" is presented.}, language = {en} } @misc{BraeskeKlohsMirre2016, author = {Br{\"a}ske, J{\"o}rn and Klohs, Steffen and Mirre, Thomas}, title = {Untersuchung zum Ausfall der Strangf{\"u}hrungsrollen in der horizontalen Zone einer Brammenstranggussanlage}, series = {Wissenschaftliche Beitr{\"a}ge 2016}, volume = {20}, journal = {Wissenschaftliche Beitr{\"a}ge 2016}, issn = {0949-8214}, doi = {10.15771/0949-8214_2016_1_7}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-5346}, pages = {49 -- 58}, year = {2016}, abstract = {Es besteht ein Problem durch den h{\"a}ufigen Ausfall der Strangf{\"u}hrungsrollen und die resultierenden erheblichen Verluste durch den Produktionsausfall, welcher beim Ersetzen der Rolleneinheiten entsteht. Um die Ursachen zu ergr{\"u}nden wurden, zun{\"a}chst die Randbedingungen und das Schadensbild analysiert. Daraus entstand die Hypothese, dass allgemein eine zu hohe Temperaturbelastung f{\"u}r die Sch{\"a}digung der Lagerkomponenten verantwortlich ist und dies die grundlegende Ursache f{\"u}r die weitere Zerst{\"o}rung darstellt. Folglich musste eine Messeinrichtung installiert werden, um genauere Erkenntnisse {\"u}ber den {\"U}berhitzungsvorgang zu erlangen. Zu diesem Zweck wurden mehrere Verfahren zur Temperaturmessung miteinander verglichen, woraufhin eine Auswahl anhand einer Nutzwertanalyse erfolgte. Die Auswertung der gewonnenen Messdaten zeigte, dass die Charakteristik der aufgezeichneten {\"U}berhitzungen sehr variabel ist. Weiterhin konnte keine Abh{\"a}ngigkeit von einem Prozessparameter ermittelt werden. Die genauer betrachteten Vorg{\"a}nge konnten nicht oder nur eingeschr{\"a}nkt als Ursache f{\"u}r die {\"U}berhitzung nachgewiesen werden. Wenngleich somit weitere Untersuchungen erforderlich sind, wurden m{\"o}gliche Maßnahmen zur L{\"o}sung des Problems vorgeschlagen.}, language = {de} } @article{KlingspornKirnerVillringeretal.2016, author = {Klingsporn, M. and Kirner, S. and Villringer, Claus and Abou-Ras, D. and Costina, I. and Lehmann, M. and Stannowski, B.}, title = {Resolving the nanostructure of plasma-enhanced chemical vapor deposited nanocrystalline SiOx layers for application in solar cells}, series = {Journal of Applied Physics}, volume = {119}, journal = {Journal of Applied Physics}, number = {22}, issn = {1089-7550}, doi = {10.1063/1.4953566}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-9727}, year = {2016}, abstract = {Nanocrystalline silicon suboxides (nc-SiOx) have attracted attention during the past years for the use in thin-film silicon solar cells. We investigated the relationships between the nanostructure as well as the chemical, electrical, and optical properties of phosphorous, doped, nc-SiO0.8:H fabricated by plasma-enhanced chemical vapor deposition. The nanostructure was varied through the sample series by changing the deposition pressure from 533 to 1067 Pa. The samples were then characterized by X-ray photoelectron spectroscopy, spectroscopic ellipsometry, Raman spectroscopy, aberration-corrected high-resolution transmission electron microscopy, selected-area electron diffraction, and a specialized plasmon imaging method. We found that the material changed with increasing pressure from predominantly amorphous silicon monoxide to silicon dioxide containing nanocrystalline silicon. The nanostructure changed from amorphous silicon filaments to nanocrystalline silicon filaments, which were found to cause anisotropic electron transport.}, language = {en} } @inproceedings{SteglichMaiStolareketal.2016, author = {Steglich, Patrick and Mai, Christian and Stolarek, David and Lischke, Stefan and Kupijai, Sebastian and Villringer, Claus and Pulwer, Silvio and Heinrich, Friedhelm and Bauer, Joachim and Meister, Stefan and Knoll, Dieter and Casalboni, Mauro and Schrader, Sigurd}, title = {Partially slotted silicon ring resonator covered with electro-optical polymer}, series = {Proceedings of SPIE}, booktitle = {Proceedings of SPIE}, issn = {1996-756X}, doi = {10.1117/12.2217725}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-13771}, year = {2016}, abstract = {In this work, we present for the first time a partially slotted silicon ring resonator (PSRR) covered with an electro-optical polymer (Poly[(methyl methacrylate)-co-(Disperse Red 1 acrylate)]). The PSRR takes advantage of both a highly efficient vertical slot waveguide based phase shifter and a low loss strip waveguide in a single ring. The device is realized on 200 mm silicon-on-insulator wafers using 248 nm DUV lithography and covered with the electro-optic polymer in a post process. This silicon-organic hybrid ring resonator has a small footprint, high optical quality factor, and high DC device tunability. A quality factor of up to 105 and a DC device tunability of about 700 pm/V is experimentally demonstrated in the wavelength range of 1540 nm to 1590 nm. Further, we compare our results with state-of-the-art silicon-organic hybrid devices by determining the poling efficiency. It is demonstrated that the active PSRR is a promising candidate for efficient optical switches and tunable filters.}, language = {en} }