Pipe bundle for borehole heat exchangers, has plastic central pipe that is removably arranged along central axis along which several metal heat pipes are helically revolved
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Heat transfer unit for heating systems and surfaces and railway point heater
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Probe to gather heat from the ground, e.g. for heating road surfaces, has a number of tubes filled with a two-phase material to evaporate through ground heat to be carried out and condensed for heat delivery
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Heating arrangement for a railway switch
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Device for measuring bodyweight of person comprises surface corresponding to sole of foot, with sensor measuring pressure of fluid or gel in chamber
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Kinetic energy utilization method during motor vehicle braking for generating cold and heat
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Method using daylight and artificial light source for illumination of rooms, tunnels, rail vehicles
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Loadable connection of electrically conductive parts
