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This book is dedicated to the numerical modeling of shallow geothermal systems. The utilization of shallow geothermal energy involves the integration of multiple Borehole Heat Exchangers (BHE) with Ground Source Heat Pump (GSHP) systems to provide heating and cooling. The modeling practices explained in this book can improve the efficiency of these increasingly common systems. The book begins by explaining the basic theory of heat transport processes in man-made as well as natural media. . These techniques are then applied to the simulation of borehole heat exchangers and their interaction...

The world-wide availability of the huge amount of license-free spectral space in the 60 GHz band provides wide room for Gb/s wireless applications. A commercial (read: low-cost) 60-GHz transceiver will, however, provide limited system performance due to the stringent link budget and the substantial RF imperfections. This book comprises research into the characteristics of typical 60-GHz channels, the influence of directional antenna patterns, the evaluation of the wideband transmission quality as well as the development of suitable baseband algorithms in the context of 60-GHz radios. A...