Entwicklung energieflexibler Anlagen/Development of energy-flexible machinery.

Mit der Energiewende geht durch Wind- und Photovoltaikanlagen eine erhöhte Volatilität in der Stromerzeugung einher. Daher müssen industrielle Fertigungsanlagen zunehmend in der Lage sein, energieflexibel zu arbeiten. Dies verbessert einerseits die Netzstabilität und bietet andererseits Unternehmen die Möglichkeit, Energiekosten einzusparen. In diesem Beitrag wird anhand einer Entwicklung einer energieflexiblen Demonstrationsanlage, aufzeigt, wie Energieflexibilitätsmaßnahmen auf der Fertigungsebene um- und eingesetzt werden können.   Wind energy and photovoltaic systems are accompanied by increased volatility in power generation due to the energy transition. To counteract the volatile generation, industrial production plants need to raise their ability to operate energy flexible. This improves grid stability and leads to cost savings for companies. In this paper it is shown how measures for energy flexibility can be successfully implemented and applied on the shop floor level. This is done by the development of an energy flexible demonstration plant.

Development of a methodology for characterizing reaction kinetics, rheology, and in situ compaction of polyimide prepregs during cure

PMR-type polyimide prepregs are challenging to fabricate into high quality composites due to volatiles that are generated and must be removed in situ during processing. The current work was conducted to develop accurate, reliable, and practical characterization techniques of the prepreg rheology, volatile generation, and subsequent volatile removal from the prepreg during composite fabrication. Thermal analysis was used to characterize volatile generation, reaction rates, and rheology. A novel approach was used to measure the thickness of the prepreg in situ during vacuum bag/oven processing using a high-temperature LVDT. Experimental results are presented for the commercially available RM-1100 polyimide/carbon prepreg system, including the reaction rate, rheology, and panel thickness results for a series of heating rates and ply counts. The results show the key interrelationships in these coupled phenomena and how that information can be used to select the optimum temperature of pressure application to minimize the final void content.