TY  - CHAP
A1  - Kreyer, Jörg
A1  - Müller, Marvin
A1  - Esch, Thomas
T1  - A Map-Based Model for the Determination of Fuel Consumption for Internal Combustion Engines as a Function of Flight Altitude
N2  - In addition to very high safety and reliability requirements, the design of internal combustion engines (ICE) in aviation focuses on economic efficiency. The objective must be to design the aircraft powertrain optimized for a specific flight mission with respect to fuel consumption and specific engine power. Against this background, expert tools provide valuable decision-making assistance for the customer. In this paper, a mathematical calculation model for the fuel consumption of aircraft ICE is presented. This model enables the derivation of fuel consumption maps for different engine configurations. Depending on the flight conditions and based on these maps, the current and the integrated fuel consumption for freely definable flight emissions is calculated. For that purpose, an interpolation method is used, that has been optimized for accuracy and calculation time. The mission boundary conditions flight altitude and power requirement of the ICE form the basis for this calculation. The mathematical fuel consumption model is embedded in a parent program. This parent program presents the simulated fuel consumption by means of an example flight mission for a representative airplane. The focus of the work is therefore on reproducing exact consumption data for flight operations. By use of the empirical approaches according to Gagg-Farrar [1] the power and fuel consumption as a function of the flight altitude are determined. To substantiate this approaches, a 1-D ICE model based on the multi-physical simulation tool GT-Suite® has been created. This 1-D engine model offers the possibility to analyze the filling and gas change processes, the internal combustion as well as heat and friction losses for an ICE under altitude environmental conditions. Performance measurements on a dynamometer at sea level for a naturally aspirated ICE with a displacement of 1211 ccm used in an aviation aircraft has been done to validate the 1-D ICE model. To check the plausibility of the empirical approaches with respect to the fuel consumption and performance adjustment for the flight altitude an analysis of the ICE efficiency chain of the 1-D engine model is done. In addition, a comparison of literature and manufacturer data with the simulation results is presented.
Y1  - 2020
U6  - https://doi.org/10.25967/490162
N1  - 68. Deutscher Luft- und Raumfahrtkongress 30.09.-02.10.2019, Darmstadt
PB  - DGLR
CY  - Bonn
ER  - 
TY  - CHAP
A1  - Koll, Gerritt
A1  - Schwarzbözl, Peter
A1  - Hennecke, Klaus
A1  - Hoffschmidt, Bernhard
A1  - Hartz, Thomas
T1  - Solarthermisches Turmkraftwerk in Jülich
T2  - Erneuerbare Energien. Bd. 2 : Ersatzbrennstoffe, Biomasse und Biogas, Solar- und Windenergie / Karl J. Thomé-Kozmiensky [Hrsg.]
Y1  - 2009
SP  - 455
EP  - 460
PB  - Thomé-Kozmiensky Verlag
CY  - Neuruppin
ER  - 
TY  - CHAP
A1  - Koll, Gerrit
A1  - Schwarzbözl, Peter
A1  - Hennecke, Klaus
A1  - Hartz, Thomas
A1  - Schmitz, Mark
A1  - Hoffschmidt, Bernhard
T1  - The Solar Tower Jülich - a research and demonstration plant for central receiver systems
T2  - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings
Y1  - 2009
SN  - 9783000287558
PB  - Deutsches Zentrum f. Luft- u. Raumfahrt
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Koll, G.
A1  - Schwarzbözl, P.
A1  - Hennecke, K.
A1  - Hoffschmidt, Bernhard
A1  - Hartz, T.
T1  - Gebündelte Kraft: das solarthermische Versuchskraftwerk Jülich
JF  - BWK : das Energie-Fachmagazin / Hrsg.: Verein Deutscher Ingenieure. Jg. 61 (2009), Nr. 9
Y1  - 2009
SN  - 0006-9612
N1  - Printausg. in der Bibliothek vorhanden: 23 Z 261-2009
SP  - 60
EP  - 62
PB  - Springer-VDI-Verlag
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Kluczka, Sven
A1  - Eckstein, Julian
A1  - Alexopoulos, Spiros
A1  - Vaeßen, Christiane
A1  - Roeb, Martin
T1  - Process simulation for solar steam and dry reforming
JF  - Energy procedia : Proceedings of the SolarPACES 2013 International Conference
N2  - 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.
Y1  - 2014
U6  - https://doi.org/10.1016/j.egypro.2014.03.092
SN  - 1876-6102 (E-Journal)
VL  - 49
SP  - 850
EP  - 859
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - BOOK
A1  - Kleemann, Manfred
A1  - Meliß, Michael
T1  - Regenerative Energiequellen. 2., völlig neu bearb. Aufl.
Y1  - 1993
SN  - 3-540-55085-2
PB  - Springer
CY  - Berlin [u.a.]
ER  - 
TY  - BOOK
A1  - Kleemann, Manfred
A1  - Meliß, Michael
T1  - Regenerative Energiequellen
Y1  - 1988
SN  - 3-540-18097-4
PB  - Springer
CY  - Berlin [u.a.]
ER  - 
TY  - CHAP
A1  - Kelly, Bruce
A1  - Herrmann, Ulf
A1  - Hale, M.-J.
T1  - Optimization Studies for Integrated Solar Combined Cycle Systems
T2  - Solar engineering 2001 : proceedings of the International Solar Energy Conference ; presented at the 2001 International Solar Energy Conference, a part of Forum 2001 - Solar energy: the power to choose, April 21 - 25, 2001, Washington, D.C.
Y1  - 2001
SN  - 0-7918-1670-2
N1  - International Solar Energy Conference <Washington, D.C.>
SP  - 393
EP  - 398
PB  - ASME
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Kearney, David W.
A1  - Kelly, Bruce
A1  - Herrmann, Ulf
A1  - Cable, R.
A1  - Pacheco, J.
A1  - Mahoney, R.
A1  - Price, Henry
A1  - Blake, D.
A1  - Nava, P.
A1  - Potrovitza, N.
T1  - Engineering Aspects of a Molten Salt Heat Transfer Fluid in a Trough Solar Field
JF  - Energy : the international journal
Y1  - 2002
U6  - https://doi.org/10.1016/S0360-5442(03)00191-9
SN  - 0360-5442
N1  - SolarPACES 2002, Zürich, Switzerland, 4–6 September 2002
VL  - 29
IS  - 5-6 (Special Issue SolarPaces)
SP  - 861
EP  - 870
ER  - 
TY  - JOUR
A1  - Kearney, D.
A1  - Herrmann, Ulf
A1  - Nava, P.
A1  - Kelly, B.
A1  - Mahoney, R.
A1  - Pacheco, J.
A1  - Cable, R.
A1  - Potrovitza, N.
A1  - Blake, D.
A1  - Price, H.
T1  - Assessment of a Molten Salt Heat Transfer Fluid in a Parabolic Trough Solar Field
JF  - Journal of Solar Energy Engineering
Y1  - 2003
U6  - https://doi.org/10.1115/1.1565087
SN  - 1528-8986
VL  - 125
IS  - 2
SP  - 170
EP  - 176
ER  -