Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Bemerkung Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Zugriffsart Link Abteilungen OPUS4-7118 Konferenzveröffentlichung Dersch, Jürgen, ; Geyer, Michael, ; Herrmann, Ulf, ulf.herrmann@sij.fh-aachen.de; Jones, Scott A., ; Kelly, Bruce, ; Kistner, Rainer, ; Ortmanns, Winfried, ; Pitz-Paal, Robert, ; Price, Henry, Steinfeld, Aldo Trough integration into power plants : a study on the performance and economy of integrated solar combined cycle systems Villingen Paul Scherrer Inst. 2002 10 Proceedings of the 11th SolarPACES International Symposium on Concentrated Solar Power and Chemical Energy Technologies : September 4 - 6, 2002, Zurich, Switzerland / Paul Scherrer Institut, PSI; ETH, Eidgenössische Technische Hochschule Zürich 3-9521409-3-7 661 671 Solar-Institut Jülich OPUS4-7125 Konferenzveröffentlichung Dersch, Jürgen, ; Geyer, Michael, ; Herrmann, Ulf, ulf.herrmann@sij.fh-aachen.de; Jones, Scott A., ; Kelly, Bruce, ; Kistner, Rainer, ; Ortmanns, Winfried, ; Pitz-Paal, Robert, ; Price, Henry, Pearson, J. Boise Solar Trough Integration Into Combined Cycle Systems ASME 2002 8 Solar engineering 2002 : proceedings of the International Solar Energy Conference ; presented at the 2002 International Solar Energy Conference, a part of Solar 2002 - Sunrise on the Reliable Energy Economy, June 15 - 20, 2002, Reno, Nevada 0-7918-1689-3 351 359 doi:10.1115/SED2002-1072 Solar-Institut Jülich OPUS4-7085 Wissenschaftlicher Artikel Dersch, Jürgen, ; Geyer, Michael, ; Herrmann, Ulf, ulf.herrmann@sij.fh-aachen.de; Jones, Scott A., ; Kelly, Bruce, ; Kistner, Rainer, ; Ortmanns, Winfried, ; Pitz-Paal, Robert, ; Price, Henry, Trough integration into power plants—a study on the performance and economy of integrated solar combined cycle systems 2004 12 Energy : the international journal 29 SolarPACES 2002, Zürich, Switzerland, 4-6 September 2002 5-6 (Special Issue SolarPaces) 947 959 10.1016/S0360-5442(03)00199-3 Solar-Institut Jülich OPUS4-11079 Konferenzveröffentlichung Gedle, Yibekal, ; Schmitz, Mark, ; Gielen, Hans, ; Schmitz, Pascal, schmitz@sij.fh-aachen.de; Herrmann, Ulf, ulf.herrmann@sij.fh-aachen.de; Teixeira Boura, Cristiano José, boura@sij.fh-aachen.de; Mahdi, Zahra, mahdi@sij.fh-aachen.de; Caminos, Ricardo Alexander Chico, ; Dersch, Jürgen, Analysis of an integrated CSP-PV hybrid power plant In the past, CSP and PV have been seen as competing technologies. Despite massive reductions in the electricity generation costs of CSP plants, PV power generation is - at least during sunshine hours - significantly cheaper. If electricity is required not only during the daytime, but around the clock, CSP with its inherent thermal energy storage gets an advantage in terms of LEC. There are a few examples of projects in which CSP plants and PV plants have been co-located, meaning that they feed into the same grid connection point and ideally optimize their operation strategy to yield an overall benefit. In the past eight years, TSK Flagsol has developed a plant concept, which merges both solar technologies into one highly Integrated CSP-PV-Hybrid (ICPH) power plant. Here, unlike in simply co-located concepts, as analyzed e.g. in [1] - [4], excess PV power that would have to be dumped is used in electric molten salt heaters to increase the storage temperature, improving storage and conversion efficiency. The authors demonstrate the electricity cost sensitivity to subsystem sizing for various market scenarios, and compare the resulting optimized ICPH plants with co-located hybrid plants. Independent of the three feed-in tariffs that have been assumed, the ICPH plant shows an electricity cost advantage of almost 20% while maintaining a high degree of flexibility in power dispatch as it is characteristic for CSP power plants. As all components of such an innovative concept are well proven, the system is ready for commercial market implementation. A first project is already contracted and in early engineering execution. Melville, NY AIP conference proceedings / American Institute of Physics 2022 9 Seiten SolarPACES 2020 978-0-7354-4195-8 26th International Conference on Concentrating Solar Power and Chemical Energy Systems 28 September-2 October 2020 Freiburg, Germany 2445 / 1 10.1063/5.0086236 https://doi.org/10.1063/5.0086236 Fachbereich Energietechnik OPUS4-11080 Konferenzveröffentlichung Mahdi, Zahra, ; Dersch, Jürgen, ; Schmitz, Pascal, schmitz@sij.fh-aachen.de; Dieckmann, Simon, ; Caminos, Ricardo Alexander Chico, ; Teixeira Boura, Cristiano José, boura@sij.fh-aachen.de; Herrmann, Ulf, ulf.herrmann@sij.fh-aachen.de; Schwager, Christian, ; Schmitz, Mark, ; Gielen, Hans, ; Gedle, Yibekal, ; Büscher, Rauno, Technical assessment of Brayton cycle heat pumps for the integration in hybrid PV-CSP power plants The hybridization of Concentrated Solar Power (CSP) and Photovoltaics (PV) systems is a promising approach to reduce costs of solar power plants, while increasing dispatchability and flexibility of power generation. High temperature heat pumps (HT HP) can be utilized to boost the salt temperature in the thermal energy storage (TES) of a Parabolic Trough Collector (PTC) system from 385 °C up to 565 °C. A PV field can supply the power for the HT HP, thus effectively storing the PV power as thermal energy. Besides cost-efficiently storing energy from the PV field, the power block efficiency of the overall system is improved due to the higher steam parameters. This paper presents a technical assessment of Brayton cycle heat pumps to be integrated in hybrid PV-CSP power plants. As a first step, a theoretical analysis was carried out to find the most suitable working fluid. The analysis included the fluids Air, Argon (Ar), Nitrogen (N2) and Carbon dioxide (CO2). N2 has been chosen as the optimal working fluid for the system. After the selection of the ideal working medium, different concepts for the arrangement of a HT HP in a PV-CSP hybrid power plant were developed and simulated in EBSILON®Professional. The concepts were evaluated technically by comparing the number of components required, pressure losses and coefficient of performance (COP). Melville, NY AIP conference proceedings / American Institute of Physics 2022 11 Seiten SOLARPACES 2020 978-0-7354-4195-8 26th International Conference on Concentrating Solar Power and Chemical Energy Systems 28 September-2 October 2020 Freiburg, Germany 2445 / 1 10.1063/5.0086269 https://doi.org/10.1063/5.0086269 Fachbereich Energietechnik OPUS4-8752 Konferenzveröffentlichung Rendon, Carlos, ; Dieckmann, Simon, ; Weidle, Mathias, ; Dersch, Jürgen, ; Teixeira Boura, Cristiano José, ; Polklas, Thomas, ; Kuschel, Marcus, ; Herrmann, Ulf, ulf.herrmann@sij.fh-aachen.de Retrofitting of existing parabolic trough collector power plants with molten salt tower systems 2018 NaN AIP Conference Proceedings 2033 1 030014-1 030014-8 10.1063/1.5067030 https://doi.org/10.1063/1.5067030 Solar-Institut Jülich OPUS4-11084 Konferenzveröffentlichung Zahra, Mahdi, ; Phani Srujan, Merige, ; Caminos, Ricardo Alexander Chico, ; Schmitz, Pascal, schmitz@sij.fh-aachen.de; Herrmann, Ulf, ulf.herrmann@sij.fh-aachen.de; Teixeira Boura, Cristiano José, boura@sij.fh-aachen.de; Schmitz, Mark, ; Gielen, Hans, ; Gedle, Yibekal, ; Dersch, Jürgen, Modeling the thermal behavior of solar salt in electrical resistance heaters for the application in PV-CSP hybrid power plants Concentrated Solar Power (CSP) systems are able to store energy cost-effectively in their integrated thermal energy storage (TES). By intelligently combining Photovoltaics (PV) systems with CSP, a further cost reduction of solar power plants is expected, as well as an increase in dispatchability and flexibility of power generation. PV-powered Resistance Heaters (RH) can be deployed to raise the temperature of the molten salt hot storage from 385 °C up to 565 °C in a Parabolic Trough Collector (PTC) plant. To avoid freezing and decomposition of molten salt, the temperature distribution in the electrical resistance heater is investigated in the present study. For this purpose, a RH has been modeled and CFD simulations have been performed. The simulation results show that the hottest regions occur on the electric rod surface behind the last baffle. A technical optimization was performed by adjusting three parameters: Shell-baffle clearance, electric rod-baffle clearance and number of baffles. After the technical optimization was carried out, the temperature difference between the maximum temperature and the average outlet temperature of the salt is within the acceptable limits, thus critical salt decomposition has been avoided. Additionally, the CFD simulations results were analyzed and compared with results obtained with a one-dimensional model in Modelica. Melville, NY AIP conference proceedings / American Institute of Physics 2022 9 Seiten SOLARPACES 2020 978-0-7354-4195-8 26th International Conference on Concentrating Solar Power and Chemical Energy Systems 28 September-2 October 2020 Freiburg, Germany 2445 / 1 10.1063/5.0086268 https://doi.org/10.1063/5.0086268 Fachbereich Energietechnik