TY  - CHAP
A1  - Anthrakidis, Anette
A1  - Herrmann, Ulf
A1  - Schorn, Christian
A1  - Schwarzer, Klemens
A1  - Wedding, Philipp
T1  - Weiterentwicklung und Erprobung eines neuartigen Verfahrens zur Bestimmung der Effizienz von konzentrierenden solarthermischen Kollektoren
T2  - 25. OTTI Symposium Thermische Solarenergie
Y1  - 2015
ER  - 
TY  - THES
A1  - Herrmann, Ulf
T1  - Untersuchungen zur Rohrwandbenetzung bei der Dampferzeugung in horizontalen und geneigten Parabolrinnen-Solarkollektoren. - (FLAGSOL Forschungsbericht)
Y1  - 2004
SN  - 3-9804901-2-2
N1  - Zugl.: Aachen, Techn. Hochsch., Diss., 2004
PB  - FLAGSOL
CY  - Köln
ER  - 
TY  - JOUR
A1  - Herrmann, Ulf
A1  - Kelly, Bruce
A1  - Price, Henry
T1  - Two Tank Molten Salt Storage for Parabolic Trough Solar Power Plants
JF  - Energy : the international journal
Y1  - 2002
U6  - http://dx.doi.org/10.1016/S0360-5442(03)00193-2
SN  - 0360-5442
N1  - SolarPACES 2002, Zürich, Switzerland, 4–6 September 2002
VL  - 29
IS  - 5-6 (Special Issue SolarPaces)
SP  - 883
EP  - 893
ER  - 
TY  - CHAP
A1  - Herrmann, Ulf
A1  - Kelly, Bruce
A1  - Price, Henry
ED  - Steinfeld, Aldo
T1  - Two Tank Molten Salt Storage for Parabolic Trough Solar Power Plants
T2  - 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
Y1  - 2002
SN  - 3-9521409-3-7
SP  - 517
EP  - 524
PB  - Paul Scherrer Inst.
CY  - Villingen
ER  - 
TY  - JOUR
A1  - Dersch, Jürgen
A1  - Geyer, Michael
A1  - Herrmann, Ulf
A1  - Jones, Scott A.
A1  - Kelly, Bruce
A1  - Kistner, Rainer
A1  - Ortmanns, Winfried
A1  - Pitz-Paal, Robert
A1  - Price, Henry
T1  - Trough integration into power plants—a study on the performance and economy of integrated solar combined cycle systems
JF  - Energy : the international journal
Y1  - 2004
U6  - http://dx.doi.org/10.1016/S0360-5442(03)00199-3
SN  - 0360-5442
N1  - SolarPACES 2002, Zürich, Switzerland, 4–6 September 2002
VL  - 29
IS  - 5-6 (Special Issue SolarPaces)
SP  - 947
EP  - 959
ER  - 
TY  - CHAP
A1  - Dersch, Jürgen
A1  - Geyer, Michael
A1  - Herrmann, Ulf
A1  - Jones, Scott A.
A1  - Kelly, Bruce
A1  - Kistner, Rainer
A1  - Ortmanns, Winfried
A1  - Pitz-Paal, Robert
A1  - Price, Henry
ED  - Steinfeld, Aldo
T1  - Trough integration into power plants : a study on the performance and economy of integrated solar combined cycle systems
T2  - 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
Y1  - 2002
SN  - 3-9521409-3-7
SP  - 661
EP  - 671
PB  - Paul Scherrer Inst.
CY  - Villingen
ER  - 
TY  - CHAP
A1  - Lüpfert, E.
A1  - Herrmann, Ulf
A1  - Price, Henry
A1  - Zarza, E.
A1  - Kistener, R.
ED  - Ramos, C.
T1  - Towards Standard Performance Analysis for Parabolic Trough Collector Fields
T2  - 12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12
Y1  - 2004
SN  - 968-6114-18-1
PB  - Instituto de Investigaciones Electricas
CY  - [s.l.]
ER  - 
TY  - CHAP
A1  - Herrmann, Ulf
A1  - Worringer, S.
A1  - Graeter, F.
A1  - Nava, P.
ED  - Romero, Manuel
T1  - Three Years of Operation Experience of the SKAL-ET Collector Loop at SEGS V
T2  - 13th International Symposium Concentrated Solar Power and Chemical Energy Technologies, June 20 - 23, 2006, Seville, Spain
Y1  - 2006
SN  - 84-7834-519-1
PB  - SolarPACES [u.a.]
CY  - [s.l.]
ER  - 
TY  - JOUR
A1  - Herrmann, Ulf
A1  - Lippke, F.
T1  - The influence of transients on the design of DSG solar fields
JF  - Journal de Physique IV : proceedings
Y1  - 1999
SN  - 2-86883-402-7
U6  - http://dx.doi.org/10.1051/jp4:1999377
SN  - 1764-7177 (Online)
SN  - 1155-4339 (Print)
VL  - 9
IS  - PR3
SP  - 489
EP  - 494
ER  - 
TY  - CHAP
A1  - Hahne, E.
A1  - Herrmann, Ulf
A1  - Rheinländer, J.
ED  - Girot, Michel
T1  - The Effect of Tilt on Flow Pattern of Water/Steam Flow Through Heated Tubes
T2  - Experimental heat transfer, fluid mechanics and thermodynamics 1997 : proceedings of the 4th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Brussels, June 2 - 6, 1997. - Vol. 2
Y1  - 1997
SN  - 88-467-0014-7
SP  - 925
EP  - 934
PB  - Ed. ETS
CY  - Pisa
ER  - 
TY  - CHAP
A1  - Mahdi, Zahra
A1  - Dersch, Jürgen
A1  - Schmitz, Pascal
A1  - Dieckmann, Simon
A1  - Caminos, Ricardo Alexander Chico
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
A1  - Schwager, Christian
A1  - Schmitz, Mark
A1  - Gielen, Hans
A1  - Gedle, Yibekal
A1  - Büscher, Rauno
T1  - Technical assessment of Brayton cycle heat pumps for the integration in hybrid PV-CSP power plants
T2  - SOLARPACES 2020
N2  - 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).
KW  - Solar thermal technologies
KW  - Hybrid energy system
KW  - Concentrated solar power
KW  - Power plants
KW  - Energy storage
Y1  - 2022
SN  - 978-0-7354-4195-8
U6  - http://dx.doi.org/10.1063/5.0086269
SN  - 1551-7616 (online)
SN  - 0094-243X (print)
N1  - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems
28 September–2 October 2020
Freiburg, Germany
IS  - 2445 / 1
PB  - AIP conference proceedings / American Institute of Physics
CY  - Melville, NY
ER  - 
TY  - CHAP
A1  - Herrmann, Ulf
A1  - Kearney, D.
A1  - Röger, M.
A1  - Prahl, C.
T1  - System performance measurements
T2  - The Performance of Concentrated Solar Power (CSP) Systems : Modelling, Measurement and Assessment
N2  - This chapter introduces performance and acceptance testing and describes state-of-the-art tools, methods, and instruments to assess the plant performance or realize plant acceptance testing. The status of the development of standards for performance assessment is given.
KW  - Performance measurement
KW  - Acceptance tests
KW  - Plant efficiency
Y1  - 2017
SN  - 978-0-08-100448-7
U6  - http://dx.doi.org/https://doi.org/10.1016/B978-0-08-100447-0.00005-5
SP  - 115
EP  - 165
PB  - Woodhead Publishing
CY  - Duxford
ER  - 
TY  - JOUR
A1  - Herrmann, Ulf
A1  - Kearney, David W.
T1  - Survey of Thermal Energy Storage for Parabolic Trough Power Plants
JF  - Journal of Solar Energy Engineering
Y1  - 2002
U6  - http://dx.doi.org/10.1115/1.1467601
SN  - 1528-8986 (Online)
SN  - 0199-6231 (Print)
VL  - 124
IS  - 2
SP  - 145
EP  - 152
ER  - 
TY  - JOUR
A1  - Herrmann, Ulf
A1  - Schwarzenbart, Marc
A1  - Dittmann-Gabriel, Sören
T1  - Speicher statt Kohle. Integration thermischer Stromspeicher in vorhandene Kraftwerksstandorte
JF  - BWK : Das Energie-Fachmagazin
Y1  - 2019
SN  - 1436-4883
VL  - 71
IS  - 4
SP  - 42
EP  - 45
PB  - Springer-VDI-Verl.
CY  - Düsseldorf
ER  - 
TY  - CHAP
A1  - Dersch, Jürgen
A1  - Geyer, Michael
A1  - Herrmann, Ulf
A1  - Jones, Scott A.
A1  - Kelly, Bruce
A1  - Kistner, Rainer
A1  - Ortmanns, Winfried
A1  - Pitz-Paal, Robert
A1  - Price, Henry
ED  - Pearson, J. Boise
T1  - Solar Trough Integration Into Combined Cycle Systems
T2  - 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
Y1  - 2002
SN  - 0-7918-1689-3
U6  - http://dx.doi.org/doi:10.1115/SED2002-1072
SP  - 351
EP  - 359
PB  - ASME
ER  - 
TY  - CHAP
A1  - Herrmann, Ulf
A1  - Rheinländer, J.
A1  - Lippke, F.
ED  - Becker, Manfred
T1  - Solar Fields for Direct Steam Generation in Parabolic Trough Collectors
T2  - Components, tools, facilities and measurement techniques. - (Solar thermal concentrating technologies : proceedings of the 8th international symposium, October, 6 - 11, 1996, Köln, Germany ; Vol. 2)
Y1  - 1997
SN  - 3-7880-7616-X
SP  - 815
EP  - 834
PB  - Müller
CY  - Heidelberg
ER  - 
TY  - CHAP
A1  - Kronhardt, Valentina
A1  - Alexopoulos, Spiros
A1  - Reißel, Martin
A1  - Latzke, Markus
A1  - Rendon, C.
A1  - Sattler, Johannes, Christoph
A1  - Herrmann, Ulf
T1  - Simulation of operational management for the Solar Thermal Test and Demonstration Power Plant Jülich using optimized control strategies of the storage system
T2  - Energy procedia
Y1  - 2015
SN  - 1876-6102
SP  - 1
EP  - 6
ER  - 
TY  - CHAP
A1  - Rendon, Carlos
A1  - Dieckmann, Simon
A1  - Weidle, Mathias
A1  - Dersch, Jürgen
A1  - Teixeira Boura, Cristiano José
A1  - Polklas, Thomas
A1  - Kuschel, Marcus
A1  - Herrmann, Ulf
T1  - Retrofitting of existing parabolic trough collector power plants with molten salt tower systems
T2  - AIP Conference Proceedings
Y1  - 2018
U6  - http://dx.doi.org/10.1063/1.5067030
VL  - 2033
IS  - 1
SP  - 030014-1
EP  - 030014-8
ER  - 
TY  - CHAP
A1  - Herrmann, Ulf
A1  - Graeter, F.
A1  - Nava, P.
ED  - Ramos, C.
T1  - Performance of the SKAL-ET Collector Loop at KJC Operating Company
T2  - 12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12
Y1  - 2004
SN  - 968-6114-18-1
PB  - Instituto de Investigaciones Electricas
CY  - [s.l.]
ER  - 
TY  - CHAP
A1  - Anthrakidis, Anette
A1  - Herrmann, Ulf
A1  - Mirza, M. F.
A1  - Schorn, Christian
A1  - Schwarzer, Klemens
A1  - Wedding, Philipp
A1  - Weis, Fabian
T1  - Parabolrinnenentwicklung und Qualifizierung am Solar-Institut Jülich
T2  - Thermische Solarenergie : 24. Symposium ; 7. bis 9. Mai 2014, Kloster Banz, Bad Staffelstein
Y1  - 2014
SN  - 978-3-943891-35-5
SP  - 242
EP  - 243
PB  - OTTI
CY  - Regensburg
ER  -