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A novel open-drive scroll expander has been designed and included in a small-scale organic Rankine cycle (ORC) engine. According to the design, the heat input is 100 kWth with hot water temperature up to 100 °C and organic fluid pressure 40 bar. These conditions correspond to supercritical state of the vapour organic fluid (R-404a) with designed thermal efficiency of 6%, which is higher than similar...
In this paper, we present a millimeter wave system that combines several innovations to enable practical use of the yet unharnessed capacity of the millimeter spectrum for high speed and secure wireless connectivity. Essential to its realization is a novel ultra-wideband array that incorporates suitable balanced feeds. Also, unique bandwidth reconfiguration technique is presented via simple tuning...
This paper presents a reconfigurable low profile ultra-wideband (UWB) phased array, having as much as 14.1:1 instantaneous bandwidth suitable for UHF to millimeter wave applications, with unprecedented integrated digital beam-forming capability across the entire bandwidth. To realize spectrum efficiency, aperture reconfiguration is also proposed. That is, the system is tuned at the feed network rather...
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