Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

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33395 Publications

DYN3D/M2 - a Code for Calculation of Reactivity Transients in Cores with Hexagonal Geometry

Grundmann, U.; Rohde, U.
The code DYN3D/M2 consists of a the 3-dimensional neutron kinetic model of the code HEXDYN3D and the thermohydraulic model of the code FLOCAL. The neutron kinetics of DYN3D/M2 is calculated by using a nodal expansion method (NEM) for hexagonal geometry. The developed method solves the neutron diffusion equation for two energy groups. Stationary state and transient behaviour can be calculated. By help of the code PREPAR-EC parameterizid neutron physical constants of given burnup distribution can be transferred from the MAGRU library to an input file of DYN3D/M2. The code FLOCAL consisting of a two-phase coolant flow model, a fuel rod model and a heat transfer regime map up to superheated steam is coupled with neutron kinetics by the neutron physical constants. One coolant channel per fuel assembly and additional hot channels are considered. The activities for code validation and the range of application are described.
  • Open Access Logo Forschungszentrum Rossendorf; FZR 93-01 Reprint of Report ZfK-690, November 1989

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Permalink: https://www.hzdr.de/publications/Publ-10
Publ.-Id: 10


Projektvorbereitung und -abwicklung des Bund-Länder-1000-Dächer-Photovoltaik-Programms

Rindelhardt, U.; Teichmann, G.
The report summarizes the present state of the 1000-Roof-Photovoltaic-Programme (sponsered by the BMFT and the Federal States) in the five new German Federal states. After some starting problems the programme is well accepted also in East Germany now, especially in Brandenburg, Saxony and Thuringia. Statistical data are given on the siutation in the single states.
Some operation results are discussed in more detail. A final yield of 2 kWh/kWp.a seems to be possible, at least in the region of Saxony. The share of the direct used solar energy by the plant owner strongly depends on the individual energy consumption and on the season. During the winter only a share of 10 % is realistic, but in summer the value can reach 50 % or more. The average performance ratio of several systems is estimated to 68 %.
  • Lecture (Conference)
    BMFT-Statusbericht Photovoltaik / BMFT-Statusseminar 27.-29.4.1993 in Bad Breisig, Tagungsband S.66
  • Contribution to proceedings
    BMFT-Statusbericht Photovoltaik / BMFT-Statusseminar 27.-29.4.1993 in Bad Breisig, Tagungsband S.66

Permalink: https://www.hzdr.de/publications/Publ-9
Publ.-Id: 9


The solid electrolyte technique as a precise method for the investigation of reduction - oxidation - reactions

Nebelung, C.
  • Poster
    12th International Symposium on Microchemical Techniques 06.09.1992, Cordoba, Spain

Permalink: https://www.hzdr.de/publications/Publ-8
Publ.-Id: 8


1000-Dächer-Programm in Sachsen und Thüringen: Programmablauf, Anlagentechnik und Ergebnisse

Eckert, W.; Knopf, U.; Rindelhardt, U.; Teichmann, G.
The paper dealt with the first results of the 1000-Roof-Photovoltaic Programme in the German Federal States of Saxony and Thuringia. Experiences in designing and mounting the pv-plants are discussed. Up to the end of 1992 totally 70 small pv-plants were coupled to the grid in both states. From the first results a mean energy production of about 700 kWh per installed power of 1 kWp can be extrapolated. The most technical difficulties resulted from the used DC-AC-inverters. Additional problems were caused by the grid itself, which was still integrated in the East European Network.
  • Lecture (Conference)
    8. Nationales Symposium "Photovoltaische Solarenergie", Staffelstein, 17.-19. März 1993, Tagungsband S. 125
  • Contribution to proceedings
    8. Nationales Symposium "Photovoltaische Solarenergie", Staffelstein, 17.-19. März 1993, Tagungsband S. 125

Permalink: https://www.hzdr.de/publications/Publ-7
Publ.-Id: 7


Technetium Complexes with Thioether Ligands - III. Synthesis and Structural Characterization of Cationic Nitridotechnetium(V) Complexes with Thiacrown ethers

Pietzsch, H.-J.; Spies, H.; Leibnitz, P.; Reck, G.
  • Polyhedron 12 (1993) 24 pp. 2995-3002

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Permalink: https://www.hzdr.de/publications/Publ-6
Publ.-Id: 6


Warmwasserbereitung mit thermischen Solaranlagen - Eine Einführung in Technik und Kosten

Maletti, R.
  • Contribution to external collection
    Sächsisches Staatsministerium für Wirtschaft und Arbeit, Dezember 1993, Januar 1996

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Permalink: https://www.hzdr.de/publications/Publ-5
Publ.-Id: 5


Netzgekoppelte Photovoltaikanlagen: Stand und aktuelle Ergebnisse

Rindelhardt, U.
Der derzeitige Entwicklungsstand bei netzgekoppelten Photovoltaikanlagen wird dargestellt. Basierend auf einer Darstellung der eingesetzten Anlagentechnik und ihrer Besonderheiten werden aktuelle Betriebsergebnisse von kleinen (1 bis 5 kWp) Anlagen diskutiert. Die Ergebnisse wurden vorwiegend an Anlagen gewonnen, die im Rahmen des 100-Dächer-Programms in Sachsen errichtet wurden. Abschließend wird auf künftige Entwicklungen eingegangen.
  • Energieanwendung und Energietechnik Heft 6, 1993, S. 300

Permalink: https://www.hzdr.de/publications/Publ-4
Publ.-Id: 4


Narrow Emission from a Lithium Liquid Metal lon Source

Hesse, E.; Naehring, F.
At a lithium metal ion source two concentric emission bundles with sharp outlines are observed, which may indicate two different kinds of emitted ions and/or emission mechanisms. The angular intensity of the narrow bundle is the highest yet reported for liquid metal ion source.
  • Journal of Physics D: Applied Physics / Rapid Communication 26 (1993) 717

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Permalink: https://www.hzdr.de/publications/Publ-2
Publ.-Id: 2


Selforganization in the nuclear system: I. The slaving principle

Iskra, W.; Müller, M.; Rotter, I.
  • Journal of Physics G: Nucl. Part. Phys. 19, (1993), 2045-2062
  • Open Access Logo Forschungszentrum Rossendorf; FZR 93-01 Preprint 1993

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Permalink: https://www.hzdr.de/publications/Publ-1
Publ.-Id: 1


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