4 research outputs found

    Optimum tuning parameters for encapsulated evolution strategies: results for a nonlinear regression problem

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    The prediction of certain thermodynamic properties of pure substances and mixtures with calculation methods is a frequent task during the process design in chemical engineering. Group contribution models divide the molecules into functional groups and if the model parameters for theses groups are known, predictions of compounds that comprise these groups are possible. The model parameters have to be fitted to experimental data, which leads to a multi-parameter multimodal optimization problem. In this paper the optimization of the tuning parameters of Evolution Strategies and different methods of parameter fitting regarding the number of parameters are presented. (orig.)Available from TIB Hannover: RR 8071(98-42)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

    Regeneratives Heizen und Kuehlen

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    Ziel des Vorhabens war die Entwicklung und Erprobung von nach regenerativen Gaskreisprozessen arbeitenden, thermisch angetriebenen Waermepumpen zum Heizen von Ein- und Mehrfamilienhaeusern. Der Bericht weist folgende Gliederung auf: -Thermodynamische Grundlage - Stand der Technik - Prozessauslegung - Auslegung der Versuchsmaschine - Versuchsergebnisse - Vergleich mit anderen Heizsystemen. (HW)The objective of the project was to develop and test renewable-energy operated, gas-cycle-process heat pumps with thermal drives for heating single-and multi-family houses. The report comprises the following parts: thermodynamic bases, state of the art, process design, rating of the experimental unit, test results, comparison with other heating systems. (HW)Available from TIB Hannover: F97B1226+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman
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