Bachelor theses / Master theses / Diploma theses / Student Assistant / Compulsory internship

The replacement of conventional steam power cycles by supercritical carbon dioxide (sCO2) power cycles can significantly increase the power density and efficiency as well as reduce the cost of such systems. Since the cycle can be operated at a wide range of temperatures, heat sources at lower temperature can be applied, e.g. waste heat sources. The optimum architecture of the sCO2 power cycle is a crucial design process, in order to achieve highest efficiency and minimum system complexity. However, the architecture depends strongly on the temperature and heat quantity of the waste heat source. Therefore different heat sources need to be analyzed and categorized towards temperature and heat quantity. Furthermore the major components of a sCO2 power cycle and the corresponding efficiency should be studied. Based on this research a sCO2 power cycle should be modelled in the system code Aspen Plus, while a variation of the heat source and heat quantity should be considered. The results and the sensitivity of the model need be analyzed. Finally the model will be optimized according to the intended waste heat source in terms of efficiency and complexity.

• Academic studies in the field of process engineering, chemical engineering, mechanical engineering or comparable fields of study.
• Knowledge in thermodynamics, heat and mass transfer phenomena.

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