Optimization of a Complex Energy Conversion Plant


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Project supported by the German Research Foundation,
Deutsche Forschungsgemeinschaft (DFG)
Cooperation between Humboldt University Berlin and Technical University Berlin

Time Period: 01.07.2001-30.06.2004

Project successfully completed

Contents

Project leaders

 
Prof. Dr.-Ing. G. Tsatsaronis 
Technical University of Berlin
Institute for Energy Engineering
Marchstr. 18
10587 Berlin 		 Tel.: (030) 314 24776
Fax: (030) 314 21683
e-mail: tsatsaronis@iet.tu-berlin.de
Dr. rer. nat. Ivo Nowak 
Humboldt-University Berlin
Institute for Mathematics
Unter den Linden 6
10099 Berlin 		 e-mail: ivo@mathematik.hu-berlin.de

Project members

 
Prof. Dr. sc. nat. Werner Römisch 
Humboldt-University Berlin
Institute for Mathematics
Unter den Linden 6
10099 Berlin 		 Tel.: (030) 2093 2561
Fax: (030) 2093 2232
e-mail: romisch@mathematik.hu-berlin.de
Dr.-Ing. Frank Cziesla 
Technical University of Berlin
Institute for Energy Engineering
Marchstr. 18
10587 Berlin 		 Tel.: (030) 314 21737
Fax: (030) 314 21683
e-mail: f.cziesla@iet.tu-berlin.de
Hernán Alperin 
Humboldt-University Berlin
Institute for Mathematics 		e-mail: alpe@mathematik.hu-berlin.de
Turang Ahadi-Oskui 
Technical University of Berlin
Institute for Energy Engineering
Marchstr. 18
10587 Berlin 		 Tel.: (030) 314 23281
Fax: (030) 314 21683
e-mail: oskui@iet.tu-berlin.de

Student assistents

 
Stefan Vigerske 
Humboldt-University Berlin
Institute for Mathematics
Rudower Chaussee 25
D-12489 Berlin 		 Tel.: (030) 2093 5498
Fax: (030) 2093 2232
Lea Boche 
Technical University of Berlin
Institute for Energy Engineering
Marchstr. 18
10587 Berlin 		 Tel.: (030) 314 24357
Fax: (030) 314 21683
e-mail: boche@buran.fb10.tu-berlin.de
Sina Block 
Technical University of Berlin
Institute for Energy Engineering
Marchstr. 18
10587 Berlin 		 Tel.: (030) 314 24357
Fax: (030) 314 21683
e-mail: sina@olymp.fb10.tu-berlin.de
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Project description and program

In this project, basic tools for the optimization of the draft of complex energy conversion plants are being developed. This includes working with three different optimization techniques (a) Iterative Thermoeconomic evaluation methods, (b) Evolutionary Algorithm, and (c) Mixed Integer NonLinear optimization Problems (MINLP). These methods are used for the analysis of a plant and for the development of a superstructure, which describes the interconnection of all the equipment components in the plant.We compare these techniques and combine them if possible to optimize the energy conversion system, i.e. to minimize the total product cost, or to maximize the thermodinamic efficiency.

Special emphasis is focused on the development and use of solution methods for MINLP. In particular, nonlinear and linear relaxations of MINLP are developed, which are improved using a Branch-Cut-and-Price algorithm. For that purpose, a Lagrangian Global Optimization (LaGO) algorithm is being developed to solve general MINLP. Relaxations are used for the generation of local solutions and lower bounds of the optimum value. The particular structure of the problem permits the use of decomposition methods, which are suitable for the solution of large structured optimization problems.

The mentioned method is applied to a practical relevant example of a paper factory. Among other things, the influence of uncertainty in the cost data will be studied. The software developed in this project offers also multiple applications into different ranges, e.g. energy engineering, power plant technology and process engineering.


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Selected publications

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Software

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Talks, Posters, Presentations

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last modified: June 25, 2007,
URL: http://www.math.hu-berlin.de/~eopt/index_en.html