Beratungs- und IT-Preis der Wirtschaftskammer

AktuellConstantin 2003

Beratungs- und IT-Preis der Wirtschaftskammer     

Betriebs- und Instandhaltungsstrategien der KELEG

Because of the approaching opening of the European market no other field of business is under such pressure as the electric utilities. In order to perform the economical requirements in a better way, together with the core business production and distribution additional services like communication, waste management, consulation etc. will be offered. In the future eligible customers codetermine the production, the transport and the distribution of the product. This requires — among other economizations — a minimization of the operating and maintenance costs combined with an optimal utility life of the existing components of the facilities. This aim can only be reached by using modern operation concepts and maintenance strategies. In this publication KELAG’s considerations to these main requirements will be presented.     

Deregulierung und Sicherheit in der Energieversorgung

Ohne Zusammenfassung     

Photovoltaik, Stand der Technik und Perspektiven der nanokristallinen Injektionszelle

A new molecular photovoltaic system for solar light harvesting and conversion to electricity has been developed. It is based on the spectral sensitization of a nanocrystalline semiconductor film by transition metal complexes. The film consists of nanometersized colloxidal titanium dioxide particles sintered together to allow for charge carrier transport. Ruthenium- and osmium-based sensitizers have so far achieved the best performance, both from the efficiency as well as the stability point of view. Carboxylated and phosphonated polypyridyl complexes of these two metals give extraordinary efficiencies for the conversion of incident photons into electric current, exceeding 90 percent within the wavelength range of their absorption band. For several years, the outstanding performance of cis-di(thio-cyanato)bis(2,2′-bipyridyl-4,4′-dicarboxylate)ruthenium(II) was unmatched by any other sensitizer. Only very recently have phosphonated terpyridyl complexes of ruthenium been developed that achieve similar photovoltaic performance. The present paper discusses the underlying physical principles of these astonishing findings. Exploiting this discovery, we have developed a lowcost photovoltaic cell whose overall light to electric energy conversion yield is 10 percent under direkt (AM 1.5) solar irradiation. For the first time, a device based on a simple molecular light absorber is attaining a conversion efficiency commensurate with that of silicon-based photovoltaic cells, but at a much lower cost.     

Monitoring und Diagnostik in der Hochspannungstechnik

To use electrical resources economically, it is useful to know the available remaining service life of used resources. With the use of technical diagnostic systems significant variables can be recorded. On the basis of these variables (temperatures, optical, electrical and mechanical variables etc.), conclusions concerning the future behaviour of the technical resources will be made. Based on the received data information, modifications in the operation behaviour can be diagnosed; tendencies can be detected and suitable counter measures can be set. The so-called “partial discharge measuring technique” can be regarded as a subsection and an important diagnostic equipment. For the detection of partial discharges different methods can be used.     

Technische Entwicklung und Anwendung der Windenergie

Ohne Zusammenfassung Kurzfassung eines Vortrags der 41. Fachtagung der ?sterreichischen Gesellschaft für Energietechnik (OGE) im OVE, die am 5. und 6. November 2003 in Salzburg stattfindet.     

HDI-Technologie und die Zukunft der Leiterplatte

The last five to ten years have brought a technology-explosion in research and development of the printed circuit board (PCB). The great challenges for PCB producers have been the introduction of laser drilling and the required design-guidelines for 100 µm line and space as well as the frequent application of “state of the art” ball grid arrays (BGA) with 800 µm array pitches. The rapid development of semiconductor components resulted in smaller grid dimensions, which has been another challenge for the PCB makers. The reduction of the grid dimensions from 800 µm to 500 µm has been a big step for the PCB fabrication. However, the current degree of miniaturization even requires the transition to a 75 µm-technology. The line and space widths become ever more critical, and smaller grid dimensions require smaller laser drilled holes. Thereby the demands on the circuit carrier increase dramatically. Primarily base materials and registration techniques must be improved essentially to be able to produce these carriers with high yield and competitive costs. The usage of big production panel formats will be essential in the price war. Based on the state of the art, the aim of this contribution is to give the reader details on AT&S experiences and objectives of the establishment of new technologies. In particular, process steps such as registration, solder mask, conductor layer and base material structuring, laser and mechanical drilling as well as future surface finishing approaches are emphasized.     

Dynamik der Innovation — Konvergenz und Paradigmenwechsel

During the last century two systems of infrastructure, shaping the world’s interactions, were created: telephony and Internet. Both of them are permanently changing. Increasing complexity results in increasing significance of interoperability as well. A great number of ideas seemed fiction 50 years ago, now they have transformed to reality. Future trends will certainly be subject to this process. Convergence will affect future growth in a very significant way. In recent years contents and networks have been strictly separated, now convergence rapidly is increasing. Research proves to be more and more technocratic, however, humans and scientists are still in the focus of innovation. In the near future research efficiency will be created by networking, “splendid isolation” will become less important. The power of innovation may result in aberrations which discriminate people in their social lives. In this respect scientists, organizations, the management and — last, but not least — all users are asked to evolve a growing sense of responsibility.