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In ventilation systems, ground heat exchangers are becoming more and more popular, which can be considered as a passive air-conditioning system. Two types of heat exchangers are used: with a membrane separating ventilation air from the ground and membrane-less. The air preparation system described below is designed to simulate the temperature change conditions corresponding to seasonal changes. It was proposed to use a heat transport system using Peltier modules. As a result, it was possible to reduce or increase ...

Braking using the eddy current induction phenomenon is used in traction systems, retarders supporting the truck braking system, but also in the testing of rotating machines to create artificial loads. In addition to the desired phenomenon of interaction between the magnetic field generated by the electromagnetic brake coils and the field created in the brake disc as a result of induced electromotive forces causing eddy currents, during the brake operation is generated heat that is the effect of the eddy currents t...