Solar-Institut Jülich
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Simulation model for the transient process behaviour of solar aluminium recycling in a rotary kiln
(2015)
In co-operation with the German Aerospace Center, the Solar-Institut Jülich has been analyzing the different technologies that are available for methanol production from CO2 using solar energy. The aim of the project is to extract CO2 from industrial exhaust gases or directly from the atmosphere to recycle it by use of solar energy. Part of the study was the modeling and simulating of a methane reformer for the production of synthesis gas, which can be operated by solar or hybrid heat sources. The reformer has been simplified in such a way that the model is accurate and enables fast calculations. The developed pseudo-homogeneous one- dimensional model can be regarded as a kind of counter-current heat exchanger and is able to incorporate a steam reforming reaction as well as a dry reforming reaction.
Mass transfer correlation for evaporation–condensation thermal process in the range of 70 °C–95 °C
(2013)
In this work the transient simulations of four hybrid solar tower power plant concepts with open-volumetric receiver technology for a location in Barstow-Daggett, USA, are presented. The open-volumetric receiver uses ambient air as heat transfer fluid and the hybridization is realized with a gas turbine. The Rankine cycle is heated by solar-heated air and/or by the gas turbine's flue gases. The plant can be operated in solar-only, hybrid parallel or combined cycle-only mode as well as in any intermediate load levels where the solar portion can vary between 0 to 100%.
The simulated plant is based on the configuration of a solar-hybrid power tower project, which is in planning for a site in Northern Algeria. The meteorological data for Barstow-Daggett was taken from the software meteonorm. The solar power tower simulation tool has been developed in the simulation environment MATLAB/Simulink and is validated.
This paper describes the modeling of a high-temperature storage system for an existing solar tower power plant with open volumetric receiver technology, which uses air as heat transfer medium (HTF). The storage system model has been developed in the simulation environment Matlab/Simulink®. The storage type under investigation is a packed bed thermal energy storage system which has the characteristics of a regenerator. Thermal energy can be stored and discharged as required via the HTF air. The air mass flow distribution is controlled by valves, and the mass flow by two blowers. The thermal storage operation strategy has a direct and significant impact on the energetic and economic efficiency of the solar tower power plants.
INNOTRAP - innovative Rußfilter für LKW-Dieselmotoren : Abschlussbericht Förderkennzeichen 16IN0313
(2009)
Biomasse-Potential
(1985)
Entwicklung und Anwendungsgebiete solarthermischer Kraftwerke - Betriebsweise und Systemvarianten
(2009)
Energiequelle für morgen : Möglichkeiten und Grenzen der Windenergienutzung - ein Statusbericht
(1977)
Regenerative Energiequellen
(1978)
Regenerative Energiequellen
(1979)
Die Bedeutung der Sonnenenergie für die zukünftige Energieversorgung der Bundesrepublik Deutschland
(1980)
Regenerative Energiequellen
(1981)
Regenerative Energiequellen
(1982)
Regenerative Energiequellen
(1983)
Regenerative Energiequellen
(1984)
Regenerative Energiequellen
(1985)
Regenerative Energiequellen
(1988)
Modenfilter als Schalldämpfer für axiale Turbomaschinen : Möglichkeiten und Grenzen des Einsatzes
(1992)
Concentrating solar power
(2012)
Solar thermal concentrated power is an emerging technology that provides clean electricity for the growing energy market. To the solar thermal concentrated power plant systems belong the parabolic trough, the Fresnel collector, the solar dish, and the central receiver system.
For high-concentration solar collector systems, optical and thermal analysis is essential. There exist a number of measurement techniques and systems for the optical and thermal characterization of the efficiency of solar thermal concentrated systems.
For each system, structure, components, and specific characteristics types are described. The chapter presents additionally an outline for the calculation of system performance and operation and maintenance topics. One main focus is set to the models of components and their construction details as well as different types on the market. In the later part of this chapter, different criteria for the choice of technology are analyzed in detail.
Air-sand heat exchanger
(2011)