In spite of claiming around half of the operational costs of chemical plants, distillation is still the most popular separation technology. Distillation has low thermodynamic efficiency, requiring the input of high quality energy in the reboiler – while rejecting a similar amount of heat at...

The goals of the project were the design, construction and operation of a Stirling engine, which is heated by the flue gas of a biomass furnace. The α-type Stirling engine was selected for cost reasons, because many parts from industrial mass production can be used. The necessary maintance and...

The impact of shading devices on the airflow across large openings during single-sided natural ventilation is investigated through an extensive experimental campaign. To quantify this impact the approach of the correction coefficient, already applied in non-shaded openings is used. The proposed...

Enhanced heat-transfer surfaces have been successfully used in the heat-exchanger industry to obtain compact and low-cost units. The heat-transfer is higher than for standard surfaces and flow configurations. There are numerous ways for heat-transfer augmentation which have been marketed or...

A clear consensus exists in German society that renewable energy resources have to play a dominant role in the future German energy supply system. However, many questions are still under discussion; for instance the relevance of the different technologies such as photovoltaic systems and wind...

A clear consensus exists in the German society that renewable energies have to play a dominant role in the future German energy supply system. However, many questions are still under discussion; for instance the relevance of the different technologies such as photovoltaic systems and wind energy...